Intermediates
2-Cyanophenol
2,4-Dihydroxybenzaldehyde
2-Hydroxy-4-methoxybenzaldehyde
4-Chlorophenyl methyl sulfone
5-[3-Chloro-5-(trifluoromethyl)pyrid-2-ylsulphonyl]thiophene-2-sulphonyl chloride
4-Nitrobenzyl chloride
 
Acid Mordant Dyes
Eriochrome Balck T
Eriochrome Balck T250
alizarin blue black B
Acid Chrome Pure Blue B
Acid Mordant Brown RH
Acid Mordant Navy Blue RRN
 
2,4-diaminobenzenesulfonic acid
Chemical performance: this product is light white powder and has no thrill. The product can dissolve in sodium carbonate, and less to dissolve in water and ethanol. It is an active dye intermediate.
Structural formula:
CAS: 88-63-1
Molecular weight: 188
Appearance: light white powder
Content: ≥ 99%
Moisture: ≤1%
Undissolved substance: ≤0.1%
HPLC: ≥99.5%
Packing: 25kg or 40kg weaving.

Remark:Sino-Japanese classic product uses unique production method of non-activator to ensure no fake amido.

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