SODIUM ALUMINATE

Sodium Aluminate Synonyms: Aluminum sodium oxide, sodium oxido-oxo-alumane, sodium aluminum oxide, sodium aluminate anhydrous, 11138-49-1, aluminium sodium dioxide, 234-391-6

Sodium aluminate
CAS Number: 1302-42-7
Formula: Al-O2.Na

EC / List no.: 215-100-1
CAS no.: 1302-42-7
Mol. formula: AlNaO2

Sodium aluminate is an inorganic chemical that is used as an effective source of aluminium hydroxide for many industrial and technical applications. 
Pure sodium aluminate (anhydrous) is a white crystalline solid having a formula variously given as NaAlO2, NaAl(OH)4 (hydrated),[2] Na2O·Al2O3, or Na2Al2O4. 
Commercial sodium aluminate is available as a solution or a solid.
Other related compounds, sometimes called sodium aluminate, prepared by reaction of Na2O and Al2O3 are Na5AlO4 which contains discrete AlO45− anions, Na7Al3O8 and Na17Al5O16 which contain complex polymeric anions, and NaAl11O17, once mistakenly believed to be β-alumina, a phase of aluminium oxide.

Structure
Anhydrous sodium aluminate, NaAlO2, contains a three-dimensional framework of corner linked AlO4 tetrahedra. 
The hydrated form NaAlO2·5/4H2O has layers of AlO4 tetrahedra joined into rings and the layers are held together by sodium ions and water molecules that hydrogen bond to O atoms in the AlO4 tetrahedra

Manufacturing
Sodium aluminate is manufactured by the dissolution of aluminium hydroxide (Al(OH)3) in a caustic soda (NaOH) solution. 
Aluminium hydroxide (gibbsite) can be dissolved in 20–25% aqueous NaOH solution at a temperature near the boiling point. 
The use of more concentrated NaOH solutions leads to a semi-solid product. 
The process must be carried out in steam-heated vessels of nickel or steel, and the aluminium hydroxide should be boiled with approximately 50% aqueous caustic soda until a pulp forms. 
The final mixture has to be poured into a tank and cooled; a solid mass containing about 70% NaAlO2 then forms. 
After being crushed, this product is dehydrated in a rotary oven. 
The resulting product contains 90% NaAlO2 and 1% water, together with 1% free NaOH.


Reaction of aluminium metal and alkali
Sodium aluminate is also formed by the action of sodium hydroxide on elemental aluminium which is an amphoteric metal. 
The reaction is highly exothermic once established and is accompanied by the rapid evolution of hydrogen gas. 
The reaction is sometimes written as:

2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2
However, the species produced in solution is likely to contain the [Al(OH)4]− ion or perhaps the [Al(H2O)2(OH)4]− ion.

Uses
In water treatment it is used as an adjunct to water softening systems, as a coagulant aid to improve flocculation, and for removing dissolved silica and phosphates.

In construction technology, sodium aluminate is employed to accelerate the solidification of concrete, mainly when working during frost.

Sodium aluminate is also used in the paper industry, for fire brick production, alumina production and so forth.

Sodium aluminate solutions are intermediates in the production of zeolites


Chemical formula: NaAlO2
Molar mass: 81.97 g/mol
Appearance: white powder (sometimes light-yellowish)
hygroscopic/ when dissolved in water a colloidal black solution is formed
Odor: odorless
Density: 1.5 g/cm3
Melting point: 1,650 °C (3,000 °F; 1,920 K)
Solubility in water: highly soluble
Solubility:Insoluble in alcohol
Refractive index (nD): 1.566


SODIUM ALUMINATE

Sodium aluminum oxide

beta-Alumina

ALUMINUM SODIUM OXIDE

Dynaflock L

Monofrax H

Alumina-C

11138-49-1

Sodium polyaluminate

Maxifloc 8010

Nalco 680

sodium;dioxoalumanuide

VSA 45

Sodium aluminate solution

EINECS 234-391-6

UN1819

UN2812

J 242

Torganit

Sodium metaaluminate

Aluminium sodium dioxide

Sodium aluminum oxide (NaAlO2)

Aluminate, sodium

AlO2.Na

Sodium aluminum dioxide

Sodium aluminate, solid

Sodium aluminate, solution

EC 234-391-6

Sodium aluminate (NaAlO2)

Sodium aluminate (Na2Al2O4)

Sodium metaaluminate (NaAlO2)

DTXSID3051206

HSDB 5023

Aluminum sodium oxide (Al2Na2O4)

EINECS 215-100-1

5478AF

LS-16501

FT-0695291

FT-0696529

EC 215-100-1

Sodium aluminate, solid [UN2812] [Corrosive]

Sodium aluminate, solid [UN2812] [Corrosive]

Q411155

Sodium aluminate, solution [UN1819] [Corrosive]

Sodium aluminate, solution [UN1819] [Corrosive]
Synonyms
Aluminate (AlO21-), sodium; Aluminum sodium oxide (Al2Na2O4); Sodium aluminum dioxide; Sodium aluminum oxide (NaAlO2); Sodium metaaluminate; Sodium metaaluminate (NaAlO2); Aluminium sodium dioxide; [ChemIDplus] UN 2812; UN 1819 (solution)


SODIUM ALUMINATE FOR PAPER INDUSTRY

Sodium aluminate was introduced to the paper industry over 40 years ago. Its acceptance as an excellent wet end additive grew extensively in Europe and the U.S. paper making operations. Sodium aluminate was found to be very effective when used in conjunction with other cationic sources, such as alum, to optimize and improve wet end paper machine operations.

Simply stated, sodium aluminate is an alkaline form of aluminum which has been dissolved in caustic. Aluminum, because of its amphoteric nature, can be easily dissolved either in an acid or alkaline medium. Aluminum dissolved in sulfuric acid forms aluminum sulfate, or alum, and aluminum dissolved in caustic forms sodium aluminate. Sodium aluminate possesses an anionically charged alumina particle.

Sodium aluminate performs two basic functions in the paper maker process. One of these is primarily a chemical function which is to furnish a portion of the alumina required for sizing. Second function is best considered a physical function of coagulation and retention. System conditions created by these two reactions and the reaction products are the basis for the benefits provided by sodium aluminate.

Other benefits from sodium aluminate usage are:
Improved strength and durability
Cleaner machine system
Reduced foam
Reduced corrosion

Sodium aluminate
Sodium aluminate is a product obtained from the dissolution of aluminium hydroxide (gibbsite) in sodium hydroxide. 
ATAMAN CHEMICALS has sodium aluminates both in solution, in the form of powder.
Our Sodium Aluminates are an excellent source of reactive alumina in alkaline solution and this is the main reason for its use as a raw material in many industrial processes.

It is used in waste water treatment, it is a shotcrete set accelerator; it is also used in the paper industry as an auxiliary refining agent and retaining agent, and other uses are described as a raw material in catalytical supports, zeolites, etc.


Sodium Aluminate is immediately available in most volumes. 
Aluminates are compounds with a negatively-charged alumina ion and a metallic oxide with various industrial applications such as water treatment and ceramics manufacturing. 


Thanks to its product properties, sodium aluminate is an excellent precipitating agent.
In other words, it binds itself to unwanted substances in liquids as a result of a chemical reaction. 
In this case, the unwanted substance is phosphate. 
Sewage treatment plants use sodium aluminate to reduce the phosphate content in their wastewater – an extremely important process in wastewater treatment.

While SODIUM ALUMINATE is also used as a raw material in industrial production processes and by the construction sector, its primary use is in industrial wastewater treatment facilities and, above all, in sewage treatment plants. 
The product’s properties offer two clear advantages here. 
Thanks to its high pH value, SODIUM ALUMINATE helps prevent the formation of filamentous bacteria and so increases the overall efficiency and functionality of sewage treatment plants. 
What’s more, it acts as a precipitating agent and eliminates the phosphate in the water. 
This is important as high amounts of phosphate – which, in itself, is actually essential to life – can have a hugely negative impact on the environment. 
High levels of the nutrient, phosphorus, in rivers and lakes, for example, can result in a rapid growth of algae and water plants which, in turn, disrupts the ecosystem.

SODIUM ALUMINATE State-of-the-Art Water Purification Solution
All Sodium Aluminate solutions are produced according to EN 882 (Chemicals used for the treatment of water intended for human consumption). 
Aluminum products reduce chemical sludge production compared to iron, due to the low molecular weight of AI. 
Aluminates raise the alkalinity of the water, eliminating the need for lime or hydroxides.

SODIUM ALUMINATE is produced by reacting alumina hydroxide with sodium hydroxide. 
Our product is free of precipitates. 
Additionally, Sodium Aluminate has a very low content of heavy metals. 
The high content of AI in aluminates facilitates lowered transport costs.


Key benefits

Gives high purity and quality of water
Excellent coagulation, flotation and sedimentation
Increases alkalinity – no need for lime and hydroxides
Excellent removal of phosphor
Minimal chemical sludge
Low transportation cost


Applications
SODIUM ALUMINATE is designed to be used within a wide range of applications.

Water treatment
Sodium Aluminate is widely used within industrial water treatment to clean process water. 


Wastewater Treatment
Sodium Aluminate is used within the wastewater treatment and Municipal water treatment. 

Pulp and Paper industry
Sodium Aluminate is used for pulp and paper manufacturing.

Pharmaceutical industry
Sodium Aluminate is used within the Pharmaceutical industry.

Pigment industry
Sodium Aluminate is used within the Pigment industry.


Sodium aluminate [Wiki]
Aluminum, olatooxo-, sodium salt (1:1) [ACD/Index Name]
Natriumoxido(oxo)aluminium [German] [ACD/IUPAC Name]
Oxo(oxydo)aluminium de sodium [French] [ACD/IUPAC Name]
Sodium oxido(oxo)aluminium [ACD/IUPAC Name]
11138-49-1 [RN]
12393-50-9 [RN]
12598-12-8 [RN]
1302-42-7 [RN]
162264-71-3 [RN]
180395-80-6 [RN]
215-100-1 [EINECS]
234-391-6 [EINECS]
7758-17-0 [RN]
Alumina-C
Aluminate (alo21-), sodium
Aluminate, sodium
Aluminium sodium dioxide
Aluminum sodium oxide
Amerfloc 2
Dynaflock
Dynaflock L
Dynagrout
Manfloc
Maxifloc 8010
MFCD00014247
Monofrax H
NaAlO2
SODIUM ALUMANOYLOLATE
Sodium aluminic acid
Sodium aluminum dioxide
Sodium aluminum oxide
sodium and oxido(oxo)alumane
Sodium metaaluminate
Sodium polyaluminate
sodium;oxido(oxo)alumane
β-Alumina

Sodium Aluminate is most widely used in municipal drinking water and waste water treatment systems. 
As an alkali, Sodium Aluminate can work in applications where the addition of caustic is not desirable. 
It provides an economical source of highly reactive alumina.

Sodium aluminate is becoming an increasingly popular choice for the removal of phosphorus in municipal and industrial wastewater plants. 
As discharge limits for nitrogen and phosphorus become more stringent, many plants are implementing both biological and chemical treatment systems for their reduction. 
However, both these treatment processes can deplete the available alkalinity and depress effluent pH below discharge limits.

Typical Applications
Typical uses of liquid Sodium Aluminate include the following:

Clarification in process and drinking water treatment applications
Clarification and phosphorus removal in wastewater treatment applications
Lime softening aid in process and groundwater treatment applications
pH adjustment and pitch control in paper mill applications
Surface treatment in titanium dioxide manufacturing applications
Synthetic zeolite and catalyst production
Refractory cement additives
Concrete additives
Industrial detergent compounds


Our Sodium Aluminate is high quality, consistent, high basic of aluminum. 
Due to the high pH of the product, many applications for sodium aluminate include co-coagulation with a more conventional coagulant.

The product can be used in many water and wastewater treatment applications, in papermaking, and as a raw material intermediate in commercial industries.


Sodium Aluminate is increasingly being used for drinking water and wastewater treatment. 
As an alkaline coagulant, sodium aluminate can be used for applications where the addition of caustic soda alone is not desirable. 
Sodium aluminate solution provides an economical source of highly reactive alumina.

Sodium Aluminate is becoming an increasingly popular choice for the removal of phosphates, magnesium, silicates, suspended solids (SS) etc. in municipal and industrial wastewater treatment plants as nitrogen and phosphate discharge limits become more and more stringent. 
Its use also improves water clarification by reducing corrosion, foaming and the amount of sludge generated. 
As a physico-chemical process with biological treatment or with the use of catalytic wet oxidation processes combined with the use of UV rays, the use of sodium aluminate creates real advantages.

This type of aluminium-based coagulant improves flocculation but is also used in other sectors:

In construction, as a concrete setting accelerator and as a hardening agent, especially when work is carried out in winter or during periods of frost
In the paper industry to increase the pH level
In the titanium dioxide industry for surface treatment, as intermediates
For the manufacture of zeolites and catalysts
For the manufacture of refractory cements

Where is it applied?
Sodium Aluminate can be used in a number of areas, for example :

Mineral processing: as a coating extender in the Titanium Dioxide Pigment Industry
Chemical manufacturing: as a feed material for white alumina trihydrate and zeolite production
A cement additive to accelerate setting.
Water treatment, as a coagulant aid to improve flocculation, and for removing dissolved silica
In the paper industry

Numerous advantages
One of the only alkaline coagulants
Concentrated, stable and ready-to-use solution
Transparent, clear and high-purity product
Excellent value for money
Facility for us to store it for you, allowing you to work on a just-in-time basis

Applications
Treatment of drinking water
Coagulation & flocculation
Municipal or industrial wastewater treatment
Coagulation & flocculation
Phosphate removal & clarification
Paper industry: neutralisation & flocculation, bonding, retention agent and pH adjustment agent
Construction: accelerator and additive for concretes and cements/hardening agent
Pigments: surface treatment for the titanium dioxide industry
Pharmacy: formulation
Catalysts: alumina manufacture


Sodium aluminate is commonly used in waste water treatment plants to remove suspended solids, some metals and dissolved silica. 
In construction, sodium aluminate is used during cold weather to accelerate the solidification of concrete. 
Other areas where sodium aluminate is used include paper production, refractory bricks and alumina production.

Sodium aluminate is commonly used to ensure the stable treatment of water with a low pH, in paper, cardboard and plastics industries,as well as industrial and municipal wastewater.


Uses: Used for printing on fabrics (mordant), making foundry molds (binder), to soften and purify water, to harden building stones, to process acrylic and polyester fibers, to remove carbonyl sulfide from gas streams, and to improve sizing and filler retention in the paper industry; Also used to make soap, lake colors, milk-glass, cleansing compounds, alumina-based catalysts, and zeolites; [HSDB]

    aluminate (AlO21-) sodium (1:1)
     aluminate (alo21-), sodium
     aluminate, sodium
     aluminium sodium dioxide
     aluminum sodium dioxide
     aluminum sodium oxide
     aluminum sodium oxide (Al2Na2O4)
     sodium aluminate (NaAlO2)
     sodium aluminate, solid [UN2812] [Corrosive]
     sodium aluminate, solution [UN1819] [Corrosive]
     sodium aluminum dioxide
     sodium aluminum oxide
     sodium dioxoalumanuide
     sodium metaaluminate


Sodium Aluminate solution is widely used in the water and wastewater treatment markets. 
As an aluminum based coagulant manufactured  as an alkaline ( caustic) based solution, Sodium Aluminate offers advantages in systems where maintaining pH at a higher level is important. Unlike acid based metal salt coagulants, Sodium Aluminate will not reduce system alkalinity.


WATER TREATMENT
It is used as a water treatment chemical for removing phosphates and fluorides from municipal and industrial waters and also for lime softening aid in process and groundwater treatment applications.
The SODIUM ALUMINATE is a very strong alkaline agent, therefore is very good coagulant in water treatment applications.
It may be used alone or in combination with Ferric Sulfate and or with Aluminum Sulfate. 
When solids content in the water is very high,the SODIUM ALUMINATE may be added using Calcium Hydroxide.


PAPER INDUSTRY
In paper industry SODIUM ALUMINATE increases the opacity retention of fibers and filling material & paper strength.
Also it stabilizes the PH value of the water circulations and increases the dispersion stability of filler.


IN THE CEMENT AS AN ACCELERATOR OR CATALYST IN CONCRETE PREPARATION, CONCRETE ADDITIVE
IN THE SOAP INDUSTRY:
It is use in soap industries and also and synthetic Zeolite and catalyst production.

IN THE PAINT INDUSTRY:
It is use As a pigment in paint.
Adding SODIUM ALUMINATE to titanium dioxide pigment helps prevent chalking in out door paints. 
It is also used for surface treatment in titanium dioxide manufacturing applications.

IN THE ACRYLIC and POLYESTER SYNTHETIC FIBRES:
In the Process of acrylic & Polyester synthetic fibres SODIUM ALUMINATE improves drying,anti piling and anti static properties.

IN PETROLIUM REFINING :
The SODIUM ALUMINATE is used in Petrochemical refining as a catalyst or catalyst carrier, as a Mud chemical..

OTHERS :
In textile, dye/printing, pharmacy, rubber, detergent and metal surface treatment are as Specifications : Solid Specifications : AL2O3 38%-54%.


PATENT
Abstract.  The  effect  of  sodium  aluminate  activator  on  properties  of  the  Portland-composite cement (clinker factor 65 %) was studied and the results are being discussed. 
It is shown that the introduction of sodium aluminate (Na[Al(OH)4]) leads to an  increase in the water demand of cement  and  a  decrease  in  its  strength.  
The  results  showed  that  the  sodium  aluminate  and polycarboxylate ether  (PCE) admixtures ensure  the  production of higher  strength  cements. 
It has been found that the addition of Na[Al(OH)4] – PCE significantly increases the compressive strength of cement mortar, particularly at 10–48 h of hydration. 
XRD and SEM measurements confirm that  the hydration of composite cement with the addition of Na[Al(OH)4] –  PCE is greatly accelerated by the  way of formation  of intense lines ettringite.  
It has been shown that the introduction of a sodium aluminate into the cement mortars allows to accelerate hardening and increase early strength and using of composite cement will provide improved performance and  suitability.  
The  results  have  shown  that  alkaline  accelerator  and  polycarboxylate  were effective for decrease shrinkage of composite cements. 

1.  Introduction Development  of  innovative  building  materials  is  one  of  the  priority  tasks  of  technological  and economic development in the construction industry. 
In recent years, due to the deep specialization of building construction, the market needs for chemical additives have increased, which allow to provide the  required  level  of  properties  of  cement  mortars  and  special-purpose  concrete  (high-strength, repaired,  waterproofing,  etc.).  
Modifiers  that  regulate  the  process  of  hardening  of  cement systems – accelerators of curing and hardening – should be singled out from various types of chemical functional  additives.  
Traditional  effective  accelerators  of  hardening  of  Portland  cement  include calcium chloride and alkali metal salts.  
However,  additives  containing  chlorine  ions currently have limited use, as chlorine ion promotes corrosion of the reinforcement. 
It should be also noted that a  number of alkaline accelerators, under certain conditions, can cause the destruction of concrete due to their  interaction with the active silica filler.  
Besides, alkaline hardening accelerators often reduce  the  final  strength  of  concrete.  
Therefore,  the  problem  of  finding  and  developing  effective hardening accelerators is particularly actual. 
Among  the  hardening  accelerators  for  cements,  additives  of  new  generation  based  on  active aluminium oxides can be singled out. 
The influence of sodium aluminate additive on the properties of building materials has been investigated by various researchers. 
These alkaline accelerators are important chemical additives for shotcrete concrete, which allow to shorten curing time from hours to minutes. 
The mechanism  of sodium aluminate action  in  the cement system is the  rapid  formation of the hydration product  of  calcium hydroaluminate (C-A-H), which  after  some time recrystallizes  into ettringite.  
It  was established that concretes made with the addition of  3–5  mass.  %  sodium aluminate have increased resistance to water. 
However, there is a decrease in the strength of concretes and mortars. 
At the same time, the introduction of a sodium aluminate accelerator greatly reduces the water  separation  in  mortars  and  concrete  mixes  and  prevents  corrosion  of  the  reinforcement.  
The introduction of an increased amount of aluminate component  in  the  composition  of  cement  leads  to increase  in  the  water  demand  of  the  binder.  
Such  technological  features  can  be  used  for systems requiring increased W/C  ratio in particular  in the composition of repair  materials, as well as for cement mortars destined for transportation, pouring and pumping. 
At the same time, such materials should be characterized by water resistance, which allows the frost resistance of concrete and mortars. 
Therefore, in order to reduce the water consumption of the mixtures and achieve their high fluidity, it is  advisable  to use  polycarboxylate  type  superplasticizers in  combination  with  alkaline  accelerators based on sodium aluminate. 
On the other hand, the impact of aggressive environment can lead to the rapid destruction of  building structures, so it is  advisable to  develop concretes and repair mortars using composite cements with a high content of mineral additives and fillers. 
It is necessary to study  alkaline  accelerators  based  on  sodium  aluminate to  achieve  high  technological  and  technical effects  in  obtaining  non-shrinkage  concretes  and  mortars  with  high  operational  properties  for rapid performance of reparation and restoration works


Conclusion 
It is established that introduction of aluminium-containing alkaline activator in the Portland-composite cement CEM II/B-M (P-S-L) 32.5 R leads to the acceleration of curing time, increase in water demand and decrease in strength. 
The strength of CEM II/B-M with Na[Al(OH)4] – PCE supplements at an age of 1 day has increased by 3.2 time, at the age of 28 days – by 1.45 times higher. 
The optimal balance between  modifier  PCE  and  sodium  aluminate  that  realize  the  1  day,  28  and  90  days  compressive strength 16.7, 56.2 and 68.9 MPa are Na[Al(OH)4] – 1.5 mass. % and PСE –  1.2 mass. %. 
The linear shrinkage of cement mortar with  Na[Al(OH)4]  – PCE  supplements at an age of 2 and 90 days have been  decreased  by  4.5  and  2.2  times,  than  cement  mortar  without  additives.  
It  is  established  that sodium  aluminate  creates  the  possibility  of  obtaining  mortar  for  shotcrete,  as  well  as  quick performance of reparation and restoration works.

Preparation method for sodium aluminate concrete accelerator
Abstract
The invention discloses a preparation method for a sodium aluminate concrete accelerator, and belongs to the field of chemical building materials. 
The concrete accelerator is prepared by using sodium aluminate, polyaluminium sulfate, sodium carbonate, dehydrated gypsum and quicklime as raw materials and through the steps of grinding and screening the raw materials. 
The preparation method is simple in process, low in production cost and good in product quality. 
After the sodium aluminate concrete accelerator is added to the concrete, the concrete can be initially solidified in 3-5 minutes and finally solidified in 7-10 minutes, and has low resilient ratio and high long-term strength. 
A retention rate of 30-day compressive strength can reach higher than 85%. 
Besides, the sodium aluminate concrete accelerator is non-toxic and odorless, and has no bad influence on physical health of operation staffs.


SYNONYMS: Aluminate (AlO21-) | sodium | Aluminum sodium oxide | Amerfloc 2 | Dynaflock | Dynagrout | Manfloc | NaAlO2 | Sodium aluminic acid | Sodium aluminum dioxide | Sodium aluminum oxide | Sodium Aluminum Oxide (naalo2)

Aluminium sodium dioxide
EC Inventory
Aluminium sodium dioxide
Otheraluminium sodium dioxide
Pre-Registration process
CAS names
Aluminate (AlO21-), sodium (1:1)


IUPAC names
Aluminato de sodio
Aluminato de sodio. Sodium aluminate.
Aluminato de sódio
Aluminium sodium dioxide 
aluminium sodium dioxide
Aluminium sodium dioxide
aluminium sodium dioxide

ALUMINUM SODIUM OXIDE
Reaction mass of sodium hydroxide and aluminium sodium tetrahydroxide
SodAl
sodium alumanoylolate
Sodium Aluminate
Sodium aluminate
sodium aluminate
Sodium Aluminium Dioxide
sodium dioxoalumanuide
SODIUM OXIDO (OXO) ALUMANE
Sodium oxido(oxo) alumane
Sodium oxido(oxo)alumane
sodium oxido(oxo)alumane
Sodium oxido(oxo)aluminate
Sodium oxido(oxo)aluminium
sodium oxido(oxo)aluminum
Αluminium sodium dioxide

Trade names
ALNA
ALSAL
Aluminato sódico
Beta Aranea
Natriumaluminat N7
Natriumaluminatlauge


Chemical Properties
Sodium aluminate is a white crystalline solid or solution.

Uses
Mordant, zeolites, water purification, sizing paper, manufacture of milk glass, soap and cleaning compounds.

Definition
sodium aluminate: white solid,NaAlO2 or Na2Al2O4, which is insolublein ethanol and soluble inwater giving strongly alkaline solutions;m.p. 1800°C. 
It is manufacturedby heating bauxite withsodium carbonate and extractingthe residue with water, or it may beprepared in the laboratory by adding excess aluminium to hot concentrated sodium hydroxide. 
In solutionthe ion Al(OH)4- predominates.
Sodium aluminate is used as amordant, in the production of zeolites,in effluent treatment, in glassmanufacture, and in cleansing compounds.

Reactions
Sodium aluminate, NaAlO2, white solid, 
(1) by reaction of aluminum hydroxide and NaOH solution, 
(2) by fusion of aluminum oxide and sodium carbonate, the solution reacts with CO2 to form aluminum hydroxide.

General Description
Water solution of the white crystalline powder. Corrosive to metals and tissue.

Air & Water Reactions
Sodium aluminate will dissolve in water and produce a strong corrosive alkaline solution. 
May generate heat when water is added.

Reactivity Profile
SODIUM ALUMINATE generates a strong base in water; reacts violently with acids and corrosive to metals. 
Not compatible with copper, tin, zinc, aluminum, acids, phosphorus, or chlorocarbons.

Hazard
(Solution) Strong irritant to tissue.

Health Hazard
Material is caustic. Irritates skin, eyes, and gastrointestinal tract, causing redness of skin and eyes, burning sensation of mucous membranes.

Fire Hazard
Behavior in Fire: Containers may burst when exposed to heat.

Safety Profile
Moderate irritant to skin, eyes, and mucous membranes. A corrosive substance. When heated to decomposition it emits toxic fumes of NazO.

Potential Exposure
Used in water and waste treatment; papermaking industry; in printing on fabrics; in the manufacture of pigments, milk glass, and soap; hardening building stone; sizing paper; as a water softener.

Shipping
UN2812 Sodium aluminate, solid, Hazard class: 8; Labels: 8-Corrosive material. UN1819 Sodium aluminate, solution, Hazard class: 8; Labels: 8-Corrosive material.

Incompatibilities
The aqueous solution is a strong base. Reacts violently with acid. Incompatible with organic anhydrides; isocyanates, alkylene oxides; epichlorohydrin, aldehydes, alcohols, glycols, caprolactum, chlorocarbons. Corrosive to metals; attacks copper, tin, aluminum, and zinc.


SodiuM aluMinate technical, anhydrous
BETA-ALUMINA
BETA-ALUMINUM (III) OXIDE
ALUMINUM SODIUM OXIDE
SODIUM ALUMINATE
aluminumsodiumdioxide
Alumiumsodiumoxide
dynaflockl
j242
maxifloc8010
monofraxh
SODIUM ALUMINATE ANHYDROUS, TECHNICAL
Sodium aluminate: (Aluminum sodium oxide)
nalco680
sodiumpolyaluminate
vsa45
Sodium aluminate, anhydrous
SodiuM aluMinate aqueous solution
11138-49-1
UVCBs-inorganic
AluminatesChemical Synthesis
Aluminum
Catalysis and Inorganic Chemistry
Ceramics
Metal and Ceramic Science

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