CAS Number: 13765-93-0
Molecular Weight: 121.951
EC Number: 232-056-9
Monoaluminum phosphate is used for bonding refractory materials, which have an Al2O3 content of 60-90% as, for instance, corundum, mullite and sintered bauxite.
Furthermore, Monoaluminum phosphate produces a very good bond with fire clay, silicon carbide, and chromite’s within certain limitations, with quartz.
Monoaluminum phosphate is offered in Technical and Laboratory Grade.
Monoaluminum phosphate is available in the form of Colourless Viscous Liquid.
We can offer Monoaluminum phosphate in many grades as per the application needs in different industry sectors.
Specifications of Monoaluminum phosphate:
Product Name: Monoaluminium Phosphate
Appearance : Colourless
Assay P2O5: 35-38%
CAS No: 7784–30–7
Density: 1.50 – 1.55 gm / cc
Grade Standard: Technical, Laboratory Grade
Molecular Formula: Al (H2PO4)3
Molecular Weight: 318 g/mol
Physical State: Viscous Liquid
Usage: Pharma Grade, Pigments, Corrosion Inhibitor
Monoaluminum phosphate is classified as the primary building block and a key ingredient in the synthesis of refractory materials.
In the commercial market, monoaluminum phosphate is highly recommended as a binding and curing material in the processing of high-temperature refractory materials.
These monoaluminum phosphate-based refractory materials are adopted in different end-use industries such as glass, ceramic and steel, to name a few.
Moreover, monoaluminum phosphate is adopted for the formulation of metal coating material.
Monoaluminum phosphate is colourless & odourless in nature as well as highly soluble in water & solvent at normal room temperature.
On an industrial scale, monoaluminum phosphate is synthesised through the acid-base neutralisation process between phosphoric acid and high-purity aluminium hydroxide.
Monoaluminum phosphate is commercially available in two forms: powder form and liquid form.
Monoaluminum phosphate is a vital ingredient used in the synthesis of refractory materials. 40% to 50 % aqueous solutions of monoaluminum phosphate are commonly utilized in the preparation of chemically bonded refractory materials in the refractory materials industry.
Monoaluminum phosphate functions as a binding and curing material in the processing of high-temperature refractory materials.
Even at lower temperatures, monoaluminum phosphate reacts with oxidic and non oxidic raw materials, by forming phosphate salts, and is desirable where quick setting and thermally stable characteristics are essential.
The synthesis of monoaluminum phosphate for commercial production involves the process of acid-base neutralization between high-purity aluminum hydroxide and phosphoric acid.
Monoaluminum phosphate exhibits a strong affinity to metals, and its demand in electro insulating plates is projected to rise significantly during the forecast period.
These forms of monoaluminum phosphate can be derived by changing the molar ratio of the reactants used during the acid-base neutralisation process.
The preparation of powder form monoaluminum phosphate requires excessive moles of phosphoric acid during the synthesis process.
Monoaluminum phosphate manufactures change the process parameters to tailor make monoaluminum phosphate according to the needs of end users, i.e., steel manufacturers and glass manufacturers, to name a few.
At a commercial level, monoaluminum phosphate manufacturers provide their products in different SKUs, i.e., in packs of different sizes, to cater to the demands of small and large end users.
Monoaluminum phosphate is gaining potential as a key material for binding & curing applications in refractory applications, which are used in numerous industries such as steel, cement and glass, to name a few.
Increase in the production of glass, ceramic and steel is expected to create substantial demand for monoaluminum phosphate across the globe.
Monoaluminum phosphate is an acidic solution of aluminium phosphates that have one displaceable hydrogen atom per molecule.
Monoaluminum phosphate is a colourless viscous adhesive solution at room temperature and is utilized basically in the refractory electrical industries.
Furthermore, our Monoaluminum phosphate is also used in dental cements, ceramics, paints, cosmetics, pharmaceutical, paper, pulp and varnishes.
Properties of Monoaluminum phosphate:
Monoaluminum phosphate is an amorphous polymeric phosphate of aluminium.
This type represents the gel and slurries made by reacting the proper portions of the polyvalent metal inos with a phosphate solution.
These represent a type of 3 dimensional binding in which the metal ions and not the phosphorous atoms are linking points.
This type of high molecular weight can therefore be termed a polyortho phosphate and contain non of the linkages, found in the usual condensed or glassy phosphates.
Thus these solutions have extremely high hydrolytic and thermal stability as apposed to the easy degradibility of the condensed and glassy phosphates.
Uses and advantages of Monoaluminum phosphate:
The most important use for Monoaluminum phosphate is as high temperature bonding agents.
When refractories are bound together/even at temperatures.
Monoaluminum phosphate being water based, does away with the pollution hazards of toxic solvents encountered in the case of organic based varnishes.
Specially, after heat treatment Monoaluminum phosphatecoating exhibit the requisite stability in water as generally is desired for electrical applications.
Specifications of Monoaluminum phosphate:
Appearance: Clear, colourless adhesive moderately viscous but pourable liquid.
Sp. Gravity: 1.48 – 1.50
Viscosity: 70 Seconds at room Temperature (as per ford cup no. 4)
Solubility: Miscible with water
PH: Around 2 P2 O5 40% (approx.)
Preferable quantity for mixing: 5 to 8 % in water
Monoaluminum phosphate is used for bonding refractory materials, which have an Al2O3 content of 60-90% as, for instance, corundum, mullite and sintered bauxite.
KEYWORDS:
13765-93-0, 232-056-9, Aluminum phosphate, Aluminum phosphate (1:1), Aluphos, FFB 32, Monoaluminum phosphate, Phosphalugel
Phosphoric acid, aluminum salt (1:1), ALUMINIUM PHOSPHATE D'
Handling and Storage of Monoaluminum phosphate:
There is no special handling precaution for the chemical.
Monoaluminum phosphatecan be stored at all places but it should be kept away from hot atmosphere and hot Furnaces etc.
Monoaluminum phosphate is acidic and so avoid a splashing into eyes, skins and clothing.
Monoaluminum phosphate care must be taken during handling and storing.
INTRODUCTION of Monoaluminum phosphate:
In the industry of refractory materials for the preparation of chemically bonded refractory materials (concretes and monoliths) various phosphates are used.
As a rule, these phosphates are added to refractory aggregates (quartz, fireclay, mullite, corundum, etc.) as aqueous solutions.
Monoaluminum phosphate (40 – 50 % aqueous solutions), ammonium phosphate, chrome aluminium phosphate, alkaline meta and poly phosphate are in the application.
The stability of the mass of the binding depends on the ratio of X = P2O5 : Al2O3.
Stability is increased when the mass is more acid.
It is even metastable at X = 3, and when X = 2,3 or less, precipitation is occured and then curing.
Hardening alumosilicate products by binding phosphate is conditioned by formation of acid phosphates, by their polymerization and polycondensation in the process of heating, and also by formation of insoluble phosphate in reaction of phosphoric acid with the oxides of the refractory fillers.
The acidic phosphates AlH3(PO4)2 · 3H2O, Al(H2PO4)3 and Al(HPO4)3 don't have the same significance for phosphate binding.
The most important is mono Al phosphate, which achieve phosphorus (chemical) bonding in the temperature range from 100-300 ° C.
Further heated to 800 °C hydrate acid phosphate, which is created dominantly in the first time, as well as mono Al phosphate they gradually dehydrate and created bond gradually becomes from a chemical into ceramic.
Phosphate hydrate gives tridimit form of AlPO4 and Al mono phosphate becomes metaphosphate Al (PO3)3.
At a temperature of 1021 °C tridimit form of phosphate becomes cristobalite one.
At a temperature of 1500 °C metaphosphate is decomposed into cristoballite AlPO4 and P2O5.
AlPO4 is stable until the temperature of 1760 °C, when it is decomposed into (refractory) Al2O3 and P2O5.
As a phosphate binder 50 % solution of mono aluminium phosphate, Al(H2PO4)3 is the most commonly used, which is resulted by neutralization of the first H+ ions from phosphoric acid with Al(OH)3.
If a mono aluminium phosphate is further neutralized with Cr2O3 then AlCr phosphate is occured.
For the preparation of refractory materials phosphoric acid, monoaluminium phosphate and aluminium chrome phosphate are mainly used.
If phosphoric acid is neutralized with Cr3+ (alone or with other cations), then very stable solutions of chrome phosphate with better colloidal properties are occured (binders with better quality then phosphoric acid and mono aluminium phosphate).
About Monoaluminum phosphate Helpful information:
Monoaluminum phosphate is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 1 000 tonnes per annum.
Monoaluminum phosphate is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
Consumer Uses of Monoaluminum phosphate:
Monoaluminum phosphate is used in the following products: coating products, fillers, putties, plasters, modelling clay, inks and toners, polymers, adhesives and sealants, pharmaceuticals and cosmetics and personal care products.
Other release to the environment of Monoaluminum phosphate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Article service life of Monoaluminum phosphate:
Release to the environment of Monoaluminum phosphate can occur from industrial use: industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).
Other release to the environment of Monoaluminum phosphate is likely to occur from: outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials) and indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment).
Monoaluminum phosphate can be found in products with material based on: stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material), metal (e.g. cutlery, pots, toys, jewellery), paper (e.g. tissues, feminine hygiene products, nappies, books, magazines, wallpaper), wood (e.g. floors, furniture, toys) and plastic (e.g. food packaging and storage, toys, mobile phones).
Widespread uses by professional workers of Monoaluminum phosphate:
Monoaluminum phosphate is used in the following products: pH regulators and water treatment products, adhesives and sealants, coating products, fillers, putties, plasters, modelling clay, inks and toners, laboratory chemicals, polymers, metal surface treatment products, water softeners and water treatment chemicals.
Monoaluminum phosphate is used in the following areas: building & construction work, scientific research and development and municipal supply (e.g. electricity, steam, gas, water) and sewage treatment.
Monoaluminum phosphate is used for the manufacture of: wood and wood products, pulp, paper and paper products, plastic products, chemicals, metals, fabricated metal products and machinery and vehicles.
Other release to the environment of Monoaluminum phosphate is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Formulation or re-packing of Monoaluminum phosphate:
Monoaluminum phosphate is used in the following products: coating products, fillers, putties, plasters, modelling clay, inks and toners, pH regulators and water treatment products, polymers, adhesives and sealants, metal surface treatment products, hydraulic fluids, water softeners, cosmetics and personal care products and water treatment chemicals.
Release to the environment of Monoaluminum phosphate can occur from industrial use: formulation of mixtures and formulation in materials.
Uses at industrial sites of Monoaluminum phosphate:
Monoaluminum phosphate is used in the following products: pH regulators and water treatment products, coating products, fillers, putties, plasters, modelling clay, inks and toners, polymers, adhesives and sealants, metal surface treatment products, hydraulic fluids, water treatment chemicals and water softeners.
Monoaluminum phosphate is used in the following areas: mining, building & construction work and municipal supply (e.g. electricity, steam, gas, water) and sewage treatment.
Monoaluminum phosphate is used for the manufacture of: chemicals, wood and wood products, pulp, paper and paper products, plastic products, metals, fabricated metal products and machinery and vehicles.
Release to the environment of Monoaluminum phosphate can occur from industrial use: in processing aids at industrial sites, as processing aid, as an intermediate step in further manufacturing of another substance (use of intermediates) and in the production of articles.
Manufacture of Monoaluminum phosphate:
Release to the environment of Monoaluminum phosphate can occur from industrial use: manufacturing of the substance, as an intermediate step in further manufacturing of another substance (use of intermediates), formulation in materials and as processing aid.
Aluminum Phosphate formula, which is also known as Aluminium monophosphate formula or Monoaluminium phosphate formula is explained in this article.
Aluminum Phosphate is made by the anion PO43- (phosphate) and cation Al3+ (aluminium).
The chemical or molecular formula of Aluminum Phosphate is AlPO4.
Aluminum Phosphate occurs as a white crystalline powder.
In its liquid form, Monoaluminum phosphate is a colorless liquid.
Monoaluminum phosphate's insoluble in water.
Naturally, Monoaluminum phosphate occurs as a mineral berlinite.
Aluminum monophosphate in its dihydrate form is found in minerals like meta-variscite and variscite.
Due to Monoaluminum phosphates piezoelectric material property, it's widely used in electrical and electronic industries.
Binder is for refractory masses contg. alumina, where the binder is a reaction prod. of mono- Al phosphate, Al(H2PO4)3(MAP) and ethanolamine, with pH 2.3-8, esp. pH 5-7.
The ethanolamine may be mono-, di, or tri-ethanolamine, added to a MAP soln. at =60 degrees C to obtain pH 2.3-8, esp. 5-7.
The binder is pref. added to the refractory in presence of adequate moisture, and the mixt. then enclosed in a packing which is impermeable to moisture, then sent to its place of use for working.
Monoaluminum phosphate is used for binding chamotte, corundum, bauxite etc.
When conventional MAP soln. is mixed with a refractory, the resultant mixt. only has a limited storage- or shelf-life, as premature bardening occurs; the mixt. can then not be pressed and/or results in prods. with inferior density, increased porosity and high water adsorption.
The invention uses ethanolamine to neutralise the MAP and form a complex which is inly destroyed by heat so a mixt. of refractory and the binder has a long storage life.
Reaction of monoaluminum phosphate Al(H2PO4)3 with alumina and magnesia and thermal change of the phosphate as well as of the reaction products were studied for fundamental research of the phosphate as a combining material of refractories.
On heating, the phosphate changed to an amorphous material and then to Al(PO3)3 (type B) above 450°C and type A above 550°C.
By treating an aqueous solution of the phosphate with aluminum hydroxide at a ratio of P/Al=2, AlH3(PO4)2⋅3H2O crystallized whose thermal change is shown.
Much AlPO4 (Tridymite form) appeared at 140°C while Berlinite appeared predominantly when P/Al ratio was larger than 1.
Magnesia reacted rapidly with the solution of the phosphate; the setting of the mixtures of the solution, aluminum hydroxide and magnesia occurred more rapidly with increasing amount of magnesia.
The reaction products consisted of MgHPO4⋅3H2O and amorphous AlPO4⋅nH2O when P/(Al+Mg) ratio was 1.
Magnesia interrupted the crystallization of AlPO4 (Tridymite form), which appeared mainly at 650°C as Mg2P2O7 crystallized.
When the ratio was smaller than 1, Mg3(PO4)2 formed above 900°C while Mg(PO3)2 formed above 400°C when the ratio was larger than 1.
Thermal performance, combustibility, and fire propagation of fly ash-metakaolin (FA-MK) blended geopolymer with the addition of aluminum triphosphate, ATP (Al(H2PO4)3), and monoaluminium phosphate, MAP (AlPO4) were evaluated in this paper.
To prepare the geopolymer mix, fly ash and metakaolin with a ratio of 1:1 were added with ATP and MAP in a range of 0-3% by weight.
The fire/heat resistance was evaluated by comparing the residual compressive strengths after the elevated temperature exposure.
Besides, combustibility and fire propagation tests were conducted to examine the thermal performance and the applicability of the geopolymers as passive fire protection.
Experimental results revealed that the blended geopolymers with 1 wt.% of ATP and MAP exhibited higher compressive strength and denser geopolymer matrix than control geopolymers.
The effect of ATP and MAP addition was more obvious in unheated geopolymer and little improvement was observed for geopolymer subjected to elevated temperature.
ATP and MAP at 3 wt.% did not help in enhancing the elevated-temperature performance of blended geopolymers.
Even so, all blended geopolymers, regardless of the addition of ATP and MAP, were regarded as the noncombustible materials with negligible (0-0.1) fire propagation index.
The Mono aluminium-phosphate import export trade sector contributes significantly to the overall GDP percentage of India.
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Monoaluminium phosphate [Al(H2PO4)3 or MAP] is pointed out as the most applied chemical binder in the refractory field due to its solubility in water, high bonding strength and reaction with basic and amphoteric raw materials at low temperatures.
Nevertheless, different routes can induce the in situ generation of Al(H2PO4)3 in castable compositions.
This work evaluates the effect of two Al(OH)3 sources added to refractory formulations or H3PO4 solutions (with distinct concentrations) in order to highlight their influence on the phase evolution and thermo-mechanical properties of the prepared samples.
Various experimental tests (flowability, setting time, cold and hot mechanical strength, thermogravimetric measurements, X-ray diffraction and hot elastic modulus) were carried out.
According to the attained results, the most promising binding system was obtained by the mixture of H3PO4 solution with 48wt% of concentration+Al(OH)3 particles prior to preparing the castables.
Furthermore, the work suggests that a systemic analysis of various parameters (acid concentration, liquid solution amount, type and amount of setting and sintering agents, etc.) should be conducted in order to attain improved phosphate-bonded products.
Keywords: aluminum phosphate; blended geopolymer; combustibility; fire propagation; thermal performance.
ALUMINIUM MONOPHOSPHATE
ALUMINIUM ORTHOPHOSPHATE
ALUMINIUM, PHOSPHATE D'
ALUMINUM PHOSPHATE (USAN)
MONOALUMINIUM PHOSPHATE
Phosphate d'aluminium
PHOSPHORIC ACID, ALUMINUM SALT
Aluminum phosphate
Aluminum phosphate (1:1)
Phosphoric acid, aluminum salt (1:1)
Regulatory process names:
Aluminium orthophosphate
Aluminium orthophosphate
aluminium orthophosphate
Aluminium orthophosphate, natural
Aluminiumphosphat
Aluminophosphoric acid
Aluminum acid phosphate
Aluminum monophosphate
Aluminum phosphate
Aluminum phosphate (1:1)
Aluphos
FFB 32
Monoaluminum phosphate
Phosphalugel
Phosphoric acid, aluminum salt (1:1)
CAS names:
Phosphoric acid, aluminum salt (1:1)
IUPAC names:
[phosphato(3-) -kappa~3~O,O',O'']aluminum
[phosphato(3-)-kappa~3~O,O',O'']aluminum
Al-phosphat
Aluminium monophosphate
Aluminium orthophosphate
aluminium orthophosphate
Aluminium Orthophosphate
Aluminium orthophosphate
Aluminium ortphosphate
Aluminium phosphate
Aluminium Phosphate
aluminium(3+) phosphate
Aluminum Phosphate
aluminum phosphate
Aluminum phosphate
aluminum;phosphate
MONOALUMINUM PHOSPHATE
Phosphoric acid, aluminum salt (1:1)
Trade names:
PHOSPHINAL PZ04
Other identifiers:
135151-77-8
135151-77-8
13765-93-0
13765-93-0
189303-35-3
189303-35-3
2182680-41-5
36201-72-6
36201-72-6
37324-42-8
37324-42-8
51668-55-4
51668-55-4
52350-11-5
52350-11-5
7784-30-7
8022-59-1
8022-59-1
879634-80-7
879634-80-7
89686-54-4
89686-54-4
93237-81-1
93237-81-1