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2B Acid
Hosea Chem® is a professional China manufacturer and supplier of 2B Acid (CAS 88-51-7), also known as 2-Amino-4-chloro-5-methylbenzenesulfonic Acid, offering stable bulk supply, competitive factory pricing, reliable quality and global export service for p Send Inquiry
Product Description
2B Acid, CAS 88-51-7
2B Acid is the common industrial name for 2-Amino-4-chloro-5-methylbenzenesulfonic Acid, CAS 88-51-7. It is an aromatic sulfonic acid containing amino, chloro, methyl and sulfonic acid functional groups. The molecular formula is C7H8ClNO3S and the molecular weight is 221.66 g/mol. 2B Acid is primarily used as an intermediate in the production of azo pigments and other organic pigments. It is associated with pigment products including Pigment Red 21 and Pigment Red 48 series.
Product Chemical Properties
Chemical Name: 2-Amino-4-chloro-5-methylbenzenesulfonic Acid
CAS No.: 88-51-7
Synonyms: 2B Acid, 2-B Acid, Red 2B Acid, 4-Amino-2-chlorotoluene-5-sulfonic Acid, 2-Chloro-4-aminotoluene-5-sulfonic Acid, 2-Chloro-p-toluidine-5-sulfonic Acid
Molecular Formula: C7H8ClNO3S
Molecular Weight: 221.66 g/mol
EC No.: 201-837-6
Chemical Type: Aromatic Sulfonic Acid
Main Function: Dye and Pigment Intermediate
Product Technical Specification
Coarse Product Premium Product
Appearance Gray with a slight reddish powder White or light pink powder
Amino Value (2B Acid Content) (%) ≥98.00 ≥98.50
Moisture Content (%) ≤0.50 ≤0.50
Insoluble Matter in 10% Ammonia Solution (%) ≤0.50 ≤0.40
Ash Content (%) ≤0.50 ≤0.50
2B Oil Content (%) ≤0.40 ≤0.30
Applications of 2B Acid
2B Acid is mainly used as an intermediate for the manufacture of azo pigments and organic pigments. Its functional groups make it suitable for further diazotization and coupling reactions in pigment synthesis.
Main applications include:
Azo pigment intermediates, Organic pigment manufacturing, Pigment Red production, Pigment Red 21, Pigment Red 48 series, Permanent Red pigment intermediates, Dye and pigment chemical synthesis, Specialty colorant manufacturing
2B Acid is also used in processes for preparing organic pigments for specialized applications, including pigment systems used in agricultural seed coating.
Packaging
25kg/bag
Production Capacity
12000MT/year
Storage Requirements
Store 2B Acid in a cool, dry and well-ventilated area. Keep the product in tightly sealed original containers and protect it from moisture, heat and direct sunlight. Avoid unnecessary exposure during handling and follow the applicable SDS requirements. Available chemical data recommends storage at room temperature under dry, protected conditions.
2B Acid Bulk Supply from China
Hosea Chem supplies 2B Acid (CAS 88-51-7), also known as 2-Amino-4-chloro-5-methylbenzenesulfonic Acid, for dye and pigment manufacturing applications. As a China chemical manufacturer and supplier, Hosea Chem supports bulk orders, customized specifications, stable supply and global export service.
Contact Hosea Chem for 2B Acid price, bulk quotation, technical specifications, packaging options and export availability.