Home > Products > Elements > Barium(Ba) Elements > 1-(4-Chloro-o-sulfo-5-tolylazo)-2-naphthol Barium SaltCAS #: 5160-02-01

1-(4-Chloro-o-sulfo-5-tolylazo)-2-naphthol Barium SaltCAS #: 5160-02-01

Product Code : EBa-A1-CU-CU

CAS #: 5160-02-01 

Linear Formula: C34H24BaCl2N4O8S2 

MDL Number: MFCD01941571 

EC No.: N/A

Nature description:

Yellowish red powder, slightly soluble in water, ethanol and hot 10% sodium hydroxide solution, insoluble in benzene and acetone, cherry red in concentrated sulfuric acid, brownish red precipitate after dilution, brick red precipitate in concentrated caustic soda solution, deep brownish red in alcohol-acid solution of potassium hydroxide, and red precipitate in its aqueous solution when encountering hydrochloric acid.

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Product Product Code Purity Size Contact Us
1-(4-Chloro-o-sulfo-5-tolylazo)-2-naphthol Barium SaltCAS #: 5160-02-01EBa-A1-CU-CUCustomized
1-(4-Chloro-o-sulfo-5-tolylazo)-2-naphthol Barium SaltEBa-A1-5N-CU99.999%Customized

Synonyms N/A

Barium 5-chloro-4-methyl-2-[(2Z)-2-(2-oxonaphthalen-1-ylidene)hydrazinyl]benzenesulfonate

Compound Formula: C34H24BaCl2N4O8S2 

Molecular Weight: 888.93  g/mol 

Appearance: orange to red powder to crystal

 Melting Point: N/A

 Boiling Point: N/A

 Density: N/A 

Solubility in H2O: slightly soluble


Product Application:

Jin Guang Hong C (ink red) is mainly used for ink. It has a bright color, possesses the characteristic of rich color and golden luster, is relatively sturdy and durable. The ink produced with it flows well, has good resistance to sunlight and heat. It can also be used for coloring watercolor, crayons, pencils and plastic products, etc. The chemical structure of the rubber red LC brand name is the same as that of Jin Guang Hong C, except that there is a slight difference in the synthesis process. After the coupling reaction is completed, it is not subjected to resinification but directly precipitates barium salt, resulting in a red powder. The texture is soft, presenting a bright yellowish-red color, with high coloring power, good heat resistance, no color change, no color migration, and is mainly used for coloring rubber and plastic products such as cables and wires.


Production method and others: 

The product is obtained by reacting CLT acid (2-amino-4-methyl-5-chlorobenzenesulfonic acid) with ammonium hydroxide to form a salt, then performing diazotization, coupling with 2-naphthol, followed by rosinization with rosin, and finally achieving color precipitation with barium chloride, and then undergoing post-treatment. 1. Salting out, diazotization 2. Coupling, rosinization 3. Color precipitation. Goldlight Red C (Oil Black Red) requires the color light to be similar to the standard, with a coloring power of 100 ± 5 (points), moisture content ≤ 1.5, water-soluble salt content ≤ 1, oil absorption capacity 55 ± 5, heat resistance 100℃, sun resistance 3-4 levels, acid resistance and alkali resistance both at level 1, water permeability, ethanol permeability both at level 3, paraffin permeability 2-3 levels, oil permeability 4-5 levels. Rubber Red LC commercial pigment requires the color light to be similar to the standard, with a coloring power of the standard 100 ± 5 (points), moisture content ≤ 1.5, heat resistance (unchanged after 1h) 140℃, water permeation reaction (pH value) 6-8, oil permeation - no, migration - no contamination, fineness (residue content after passing through 100 mesh sieve) ≤ 5. Raw material consumption (kg/t) CLT acid (100) 520, 2-naphthol (100) 320, ammonia water (20) 190, hydrochloric acid (31) 580, sodium nitrite (industrial) 155, caustic soda (100) 230, rosin (superior grade) 55, barium chloride (industrial) 460, emulsifier 20, Tai Gu oil 228.


Health & Safety Information

Signal Word: Danger 

Hazard Statements: H301, H373 

Hazard Codes: N/A 

Precautionary Statements: P260, P264, P270, P301+P310+P330, P314, P405, P501 

Risk Codes: N/A 

Safety Statements: N/A 

RTECS Number: DB5500000 

Transport Information: N/A 

GHS Pictogram: Image,Image

Chemical Identifiers 


Linear Formula: C34H24BaCl2N4O8S2 

Pubchem CID: 21238 

MDL Number: MFCD01941571 

EC No.: N/A 

IUPAC Name: barium(2+); 5-chloro-2-[(2-hydroxynaphthalen-1-yl)diazenyl]-4-methylbenzenesulfonate 

Beilstein/Reaxys No.: 9460015 

InchI Identifier: 1S/2C17H13ClN2O4S.Ba/c2*1-10-8-14(16(9-13(10)18)25(22,23)24)19-20-17-12-5-3-2-4-11(12)6-7-15(17)21;/h2*2-9,21H,1H3,(H,22,23,24);/q;;+2/p-2 

InchI Key: POJOORKDYOPQLS-UHFFFAOYSA-L 



 Packing of Standard Packing:

 Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.

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