17852-52-7
4-Sulfonamidophenylhydrazine hydrochloride
4-Sulfonamidophenylhydrazine hydrochloride is used in pharmaceutical intermediate and other. It’s mainly used for producing Celecoxib.The process and raw materials as follows:After sulfanilamide diazotized with hydrochloric acid and sodium nitrite,again under the reduction of sodium bisulfite, after acidification,filtration,cooling,crystallization,centrifugation, drying, then package and storage.
Synonyms: Hydrazinobenzene-1-sulfonamide hydrochloride
4-Hydrazinobenzene-1-sulfonamide hydrochloride;
4-Aminosulfonylphenylhydrazine hydrochloride
Molecular Formula: C6H10ClN3O2S
CAS NO:17852-52-7
Molecular weight:223.68
Appearance:white powder
Melting Point:217-219℃
Purity(%): ≥97
Sulfanilamide: ≤1.0
Single impurity(%)≤0.2:
Total impurity content(%):≤1.5
Sulphate ash: ≤2.0
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616-79-5 |
2-Amino-5-nitrobenzoic acid
Molecular Formula: C7H6N2O4
CAS：616-79-5
Quality Index：
1.Appearance: Yellowish crystal
2.Conten... |
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Cationic Rosin Sizing Agent |
Cationic Rosin Sizing Agent
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93-11-8 |
2-Naphthalenesulfonyl chloride
Synonyms:2-Naphthylsulfonyl chloride,beta-Naphthalenesulfochloride
Appearance:white powder
CAS NO:93-11-8
Molecu... |
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Surface sizing agent |
Surface sizing agent
Product feature
1. It can completely or partly replace interinal sizing agent,clean paper making environment,reduce the pro... |
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