1. Chemical property

2,4-Diaminobenzenesulfonic acid is an important dye intermediates.It is light white powder without  pungent odor and is soluble in sodium carbonate,ethanol,readily soluble in hot water,but slightly dissolved in water.As it is a reactive dye intermediates,so it  grows to be brown in the air

Melting point:260-266℃

Molecular formula:C6H8N2O3S

Molecular mass:188.2

2. Safety notes

Immediately rinse with plenty of water and send to hospital for medical treatment in case of touching eyes.In the operational process,please wear suitable gloves and protective spectacles or protective visor to avoid the irritating to eyes,skin and respiratory tract caused by  irritants.

3. Product application

It is  prepared for  reactive  bright yellow X-6G,reactive  bright yellow X-HG,reactive  brilliant blue K-6G,reactive yellow KD-3G,reactive yellow M-5G,reactive  brilliant blue K-BR,reactive  brilliant K-GR, brilliant blue  M-BR,weak acid bright red,acid mordant brown RH etc.

4. Mass index

Content:Light-white powder ≥99  moisture≤1 insoluble substance≤0.1 HPLC≥99.5

5. Production method

 Take m-phenylene diamine  as raw material.2,4-Diaminobenzenesulfonic acid is prepared by sulfonation of nitrating acid based on  sulfuric acid and fuming sulphuric acid .

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