Sodium benzotriazole = BTA.Na
PRODUCT:
Sodium Benzotriazole Solution 40%
CAS number:
15217-42-2
SYNONYM:
Benzotriazole, sodium salt; 1H-Benzotriazole, sodium salt; Sodium benzotriazolate; Sodium 1H-benzotriazolide; 1H-Benzotriazole, sodium salt (1:1)
FORMULA:
C6H4N3Na
Properties of Sodium benzotriazole:
Sodium benzotriazole can be absorbed on the metal surface and form a thin film to protect copper and other metals.
BTA.Na can be used together with many scale inhibitors and fungi disinfectants in circulating cool water system.
And sodium benzotriazole has good corrosion inhibition effect in circulating cool water system.
The dosage of 2-4 mg/L is preferred.
Sodium benzotriazole can also be used as an anti-discolor agent, coating additive, and lube oil additive.
Description of Sodium benzotriazole
Sodium Benzotriazole 40% Solution, or BTA40, is a colorless-to-pale yellow, liquid of 40% Sodium Benzotriazole Solution in water represented by the formula: (C6H4N3Na).
Sodium benzotriazole is commonly used as a corrosion inhibitor for yellow metal protection in cooling tower products, engine coolants, metal working fluids, inks and cleaners.
Sodium benzotriazole is soluble in water, benzene, toluene, chloroform, and miscible with lower alcohol and ethylene glycol.
CAS No.: 15217-42-2
Molecular Formula: C6H4N3Na
Molecular Weight: 141.11
Specifications of Sodium benzotriazole:
Appearance : Pale yellow transparent liquid
Active content, %: 50.0 Min.
Density (20℃) g/cm3: 1.20 Min.
Physico-chemical Properties of Sodium benzotriazole:
Molecular Formula: C6H4N3Na
Molar Mass: 141.106
Boling Point: 276.1°C at 760 mmHg
Flash Point: 133.9°C
Vapor Presure: 0.00491mmHg at 25°C
Sodium benzotriazole, soluble in water, chloroform, benzene, toluene and other organic solvents can be mixed with any ratio lower alcohol, ethylene glycol.
KEYWORDS:
15217-42-2, BTA.Na, Sodium Benzotriazole Solution 40%, Benzotriazole sodium salt, 1H-Benzotriazole sodium salt, Sodium benzotriazolate, Sodium 1H-benzotriazolide, 1H-Benzotriazole sodium salt (1:1), Sodium 1 2 3-benzotriazole, DTXSID4065868
Physical and Chemical Properties of Sodium benzotriazole:
Sodium benzotriazole is non-toxic, non-corrosive, non-explosive, soluble in water, chloroform, benzene, toluene and other organic solvents can be mixed with low alcohol, ethylene glycol in any proportion.
Uses of Sodium benzotriazole:
Sodium benzotriazole adsorbed on the metal surface to form a very thin film to protect copper, brass, bronze and other metals from atmospheric and harmful medium corrosion, in cold water to add trace Sodium benzotriazole to prevent the migration of copper ions, migration of copper ions can catalyze the corrosion of aluminum, iron and other metals, in the heat transfer medium, copper ions can cause aluminum small hole corrosion.
Addition of Sodium benzotriazole to circulating water prevents copper ions from catalytic oxidation of ethylene glycol
TYPICAL PRODUCT SPECIFICATIONS of Sodium benzotriazole:
PHYSICAL FORM:
Sodium benzotriazole is a colorless to pale yellow liquid.
ODOR:
No odor
BENZOTRIAZOLE:
33.5 - 34.5% wt.
DENSITY @ 20C:
1.174 (10.3 lbs/gal)
FREEZING POINT:
-5 to -10C
FLASH POINT:
> 195C (closed cup)
Description of Sodium benzotriazole:
Sodium Benzotriazole 40% Solution, or BTA40, is a colorless-to-pale yellow, liquid of 40% Sodium Benzotriazole Solution in water represented by the formula: (C6H4N3Na).
Sodium benzotriazole is commonly used as a corrosion inhibitor for yellow metal protection in cooling tower products, engine coolants, metal working fluids, inks and cleaners.
Sodium benzotriazole is soluble in water, benzene, toluene, chloroform, and miscible with lower alcohol and ethylene glycol.
COLOR, GARDNER:
< 3
CHLORIDE:
<= 100 ppm
PH (10% SOLUTION):
11.2 - 11.7
MOLECULAR WEIGHT:
141.11
NOTES:
Sodium benzotriazole is commonly used as a corrosion inhibitor for metal protection in cooling tower products, engine coolants, metal working fluids, inks, and cleaners.
CLASS:
Corrosion Inhibitors, Industrial Chemicals
INDUSTRY:
Industrial, Anti-Corrosives
Applications of Sodium benzotriazole:
Sodium benzotriazole is used as corrosive inhibitor, widely used in solar energy converting system, thecooling system of pile in nuclear power plant, cooling system of motor engine and gasengine.
Sodium benzotriazole is used with other inhibitor, it will get better effect.
Properties of Sodium benzotriazole:
BTA•Na (Sodium benzotriazole) can be absorbed on metal surface and form a thin film to protect copper and other metals.
BTA•Na (Sodium benzotriazole) can be used together with many scale inhibitors and fungi disinfectants in circulating cool water system, and it has good corrosion inhibition effect in circulating cool water system.
The dosage of 2-4mg/l is preferred.
BTA•Na (Sodium benzotriazole) can also be used as anti-discolor agent, coating additive and luboil additive.
About Sodium benzotriazole Helpful information:
Sodium benzotriazole is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 to < 1 000 tonnes per annum.
Sodium benzotriazole is used in formulation or re-packing, at industrial sites and in manufacturing.
Consumer Uses of Sodium benzotriazole:
ECHA has no public registered data indicating whether or in which chemical products Sodium benzotriazole might be used.
ECHA has no public registered data on the routes by which Sodium benzotriazole is most likely to be released to the environment.
Article service life of Sodium benzotriazole:
ECHA has no public registered data on the routes by which Sodium benzotriazole is most likely to be released to the environment.
ECHA has no public registered data indicating whether or into which articles Sodium benzotriazole might have been processed.
Widespread uses by professional workers of Sodium benzotriazole:
ECHA has no public registered data indicating whether or in which chemical products Sodium benzotriazole might be used.
ECHA has no public registered data on the types of manufacture using Sodium benzotriazole.
ECHA has no public registered data on the routes by which Sodium benzotriazole is most likely to be released to the environment.
Formulation or re-packing of Sodium benzotriazole:
Sodium benzotriazole is used in the following products: water treatment chemicals.
Release to the environment of Sodium benzotriazole can occur from industrial use: formulation of mixtures.
Uses at industrial sites of Sodium benzotriazole:
Sodium benzotriazole is used in the following products: water treatment chemicals.
Sodium benzotriazole is used in the following areas: municipal supply (e.g. electricity, steam, gas, water) and sewage treatment.
Release to the environment of Sodium benzotriazole can occur from industrial use: as processing aid.
Manufacture of Sodium benzotriazole:
Release to the environment of Sodium benzotriazole can occur from industrial use: manufacturing of the substance.
Properties of Sodium benzotriazole:
BTA•Na can be absorbed on metal surface and form a thin film to protect copper and other metals.
BTA•Na can be used together with many scale inhibitors and fungi disinfectants in circulating cool water system, and it has good corrosion inhibition effect in circulating cool water system.
The dosage of 2-4mg/l is preferred.
BTA•Na can also be used as anti-discolor agent, coating additive and luboil additive.
Chemical & Physical Properties of Sodium benzotriazole:
Density: 1.13-1.19 g/ml(24 C).
Boiling Point: 276.1ºC at 760 mmHg
Melting Point: -15ºC
Molecular Formula: C6H4N3Na
Molecular Weight: 141.10600
Flash Point: 133.9ºC
Exact Mass: 141.03000
PSA: 38.67000
LogP: 0.58700
Vapour Pressure: 0.00491mmHg at 25°C
Sodium Benzotriazole 40% is an alkaline solution of benzotriazole designed for use in aqueous systems to prevent corrosion of copper.
Sodium Benzotriazole can be used in engine coolants, metalworking fluids, and water treatment.
The salt form of benzotriazole is highly soluble throughout many formulations.
Although the sodium salt of tolyltriazole has far exceeded the popularity of any benzotriazole salt, the product should not be discounted for its low overal impurities and moderate cost effectiveness.
Benzotriazoles (BZTs) are a class of organic compounds that have been used as metal anticorrosive and ultraviolet stabilizer additives in a wide range of commercial and industrial applications.
These chemicals have been in commercial production and use since the late 1950s with many compounds being produced at volumes exceeding one half million kilograms annually.
Some BZT compounds exhibit behaviors characteristic of persistent organic pollutants, and emerging evidence indicates long-term preservation and persistence in sediments.
Other BZTs associated with anticorrosion applications appear to be highly resistant to degradation, relatively water soluble, and toxic to aquatic organisms.
A significant number of BZTs have been discovered in different environmental compartments at levels justifying further study for fate, transport, environmental persistence, and potential adverse effects.
Consequently, BZTs should be considered contaminants of emerging concern in the environment with POP-like characteristics.
Benzotriazole (BTA) is a heterocyclic compound with the chemical formula C6H5N3.
Benzotriazole features a five-membered ring containing three nitrogen atoms.
This white to light tan solid has a variety of uses, for instance, as a corrosion inhibitor for copper.
Computed Properties of Sodium benzotriazole:
Molecular Weight:141.11
Hydrogen Bond Acceptor Count:3
Exact Mass:141.03029142
Monoisotopic Mass:141.03029142
Topological Polar Surface Area:26.8
Heavy Atom Count:10
Complexity:109
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes
FEATURES AND BENEFITS of Sodium benzotriazole:
Sodium benzotriazole controls corrosion of copper and copper alloys
Sodium benzotriazole extends equipment life
Sodium benzotriazole can be used to passivate systems or fed as an adjunct to existing treatment programs
Characteristics of Sodium benzotriazole:
PSA：
38.67000
XLogP3：
0.58700
Appearance：
Liquid
Density：
1.13-1.19 g/ml(24 C).
Melting Point：
-15ºC
Boiling Point：
276.1ºC at 760 mmHg
Flash Point：
133.9ºC
Vapor Pressure：
0.00491mmHg at 25°C
Structure of benzotriazole:
Benzotriazole features two fused rings.
Benzotriazoles five-membered ring can exist in tautomers A and B, and the derivatives of both tautomers, structures C and D, can also be produced.
Various structural analyses with UV, IR and 1H-NMR spectra indicated that isomer A is predominantly present at room temperature.
The bond between positions 1 and 2 and the one between positions 2 and 3 have proved to have the same bond properties.
Moreover, the proton does not tightly bind to any of the nitrogen atoms, but rather migrates rapidly between positions 1 and 3.
Therefore, the BTA can lose a proton to act as a weak acid (pKa = 8.2) or accept a proton using the lone pair electrons located on its nitrogen atoms as a very weak Brønsted base (pKa < 0).
Not only can it act either as an acid or base, it can also bind to other species, utilizing the lone pair electrons.
Applying this property, the BTA can form a stable coordination compound on a copper surface and behave as a corrosion inhibitor.
Synthesis and reactions of benzotriazole:
A synthesis of the BTA involves the reaction of o-phenylenediamine, sodium nitrite and acetic acid.
The conversion proceeds via diazotization of one of the amine groups.
The synthesis can be improved when the reaction is carried out at low temperatures (5–10 °C) and briefly irradiated in an ultrasonic bath.
Typical batch purity is 98.5% or greater.
Biphenylene and benzyne can be conveniently prepared from benzotriazole by N-amination with hydroxylamine-O-sulfonic acid.
The major product, 1-aminobenzotriazole, forms benzyne in an almost quantitative yield by oxidation with lead(IV) acetate, which rapidly dimerises to biphenylene in good yields.
Applications of benzotriazole:
Benzotriazole has been known for its great versatility.
Benzotriazole has already been used as a restrainer (or anti-fogging agent) in photographic emulsions or developing solutions, and as a reagent for the analytical determination of silver.
More importantly, Benzotriazole has been extensively used as a corrosion inhibitor in the atmosphere and underwater.
Also, Benzotriazoles derivatives and their effectiveness as drug precursors have been drawing attention.
Besides all the applications mentioned above, the BTA can be used as antifreezes, heating and cooling systems, hydraulic fluids and vapor phase inhibitors as well.
Corrosion inhibitor of benzotriazole:
Benzotriazole is an effective corrosion inhibitor for copper and its alloys by preventing undesirable surface reactions.
Benzotriazole is known that a passive layer, consisting of a complex between copper and benzotriazole, is formed when copper is immersed in a solution containing benzotriazole.
The passive layer is insoluble in aqueous and many organic solutions.
There is a positive correlation between the thickness of the passive layer and the efficiency of preventing corrosion.
BTA is used in conservation, notably for the treatment of bronze disease.
The exact structure of the copper-BTA complex is controversial and many proposals have been suggested.
Drug precursor of benzotriazole:
Benzotriazole derivatives have chemical and biological properties that are versatile in the pharmaceutical industry.
Benzotriazole derivatives act as agonists for many proteins.
For instance, vorozole and alizapride have useful inhibitory properties against different proteins and benzotriazole esters have been reported to work as mechanism-based inactivators for severe acute respiratory syndrome (SARS) 3CL protease.
The methodology is not only limited to heterocyclization but was also successful for polynuclear hydrocarbons of small carbocyclic systems.
Environmental relevance of benzotriazole:
Benzotriazole is fairly water-soluble, not readily degradable and has a limited sorption tendency.
Hence, Benzotriazole is only partly removed in wastewater treatment plants and a substantial fraction reaches surface water such as rivers and lakes.
Benzotriazole is considered to be of low toxicity and a low health hazard to humans although exhibiting some antiestrogenic properties.
Related compounds of benzotriazole:
Tolyltriazole adds one methyl group on the benzyl group.
This compound has better solubility in some organic solvents.
Molecular Weight: 142.11
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 0
Exact Mass: 142.03811645
Monoisotopic Mass: 142.03811645
Topological Polar Surface Area: 41.6 Ų
Heavy Atom Count: 10
Formal Charge: 0
Complexity: 92.5
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 2
Compound Is Canonicalized: Yes
Sodium benzotriazole
Sodium benzo[d][1,2,3]triazol-1-ide
SODIUM BENZOTRIAZOLATE
SCHEMBL416513
217S422
217-42-2
1H-Benzotriazole, sodium salt
Sodium 1H-benzotriazolide
Benzotriazole, sodium salt
Sodium benzotriazole
sodium;benzotriazol-1-ide
1H-Benzotriazole sodium salt
SODIUM BENZOTRIAZOLATE
Sodium benzo[d][1,2,3]triazol-1-ide
1H-Benzotriazole,sodiumsalt
1H-Benzotriazole, sodium salt (1:1)
EINECS 239-269-6
EC 239-269-6
Sodium 1,2,3-benzotriazole
DTXSID4065868
1,2,3-benzotriazole sodium salt
Sodium Benzotriazole Solution 40%
sodium 1H-1,2,3-benzotriazol-1-ide
Sodiumbenzo[d][1,2,3]triazol-1-ide
W-108054
Regulatory process names:
Sodium 1H-benzotriazolide
sodium 1H-benzotriazolide
CAS names:
1H-Benzotriazole, sodium salt (1:1)
IUPAC names:
sodium 1H-1,2,3-benzotriazol-1-ide
sodium 1H-benzotriazolide
sodium benzotriazol-1-ide
Trade names:
O1510
R-4324
Other identifiers:
148918-02-9
15217-42-2