Products Description
Introduction and application of CAS:88-44-8| 4-Aminotoluene-3-sulfonic acid
Used as dye intermediate. The coupling of 4B acid with 2,3-acid can produce pigment red 6B and Lisolaba red BK; coupling with 2-naphthol can produce the pigment yellow light red BL. These pigments are widely used in the coloring of inks, plastics, rubber, wires and cables, daily chemicals and other products. Usage: Mainly used in the production of pigments. C.I.57:1 is an important intermediate for organic pigments and can be used to synthesize pigments Brilliant Red 6B, Lisol Red BK, etc. The production method uses p-toluidine as raw material, reacts with sulfuric acid, and then bakes and translocates at high temperature to obtain a crude product, which is then refined to obtain the finished product; or it can be obtained by transposition and sulfonation in the presence of an organic solvent. The solvent method process route is reasonable, the solvent recovery rate is high, the product quality is good (purity reaches 98.5%), and the yield is above 90%.
Specification of CAS:88-44-8| 4-Aminotoluene-3-sulfonic acid
Melting point 300°C
Boiling point 500°C (roughestimate)
Density 1.431
Refractive index 1.6100(estimate)
Storage conditions Keep in dark place,Inert atmosphere,Room temperature
Solubility Solubility in water: 6g/L, 20°C
Acidity coefficient (pKa)-1.35±0.42(Predicted)
form powder crystal
Color white to light red to green
Package of CAS:88-44-8| 4-Aminotoluene-3-sulfonic acid
100G/1kg/25kg drum
This product is valid for 24 months from the production date when stored in a warm sealed state.
Safety and Transportation
This product should be stored and sealed at room temperature. Customers should carefully read the product treatment, material safety data sheet (MSDS), and labels before use, be familiar with the product's safety information, operating instructions, and environmental impact, and wear appropriate personal protection as required. supplies.
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