Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Benzoic acid,5-[2-[4-(aminosulfonyl)phenyl]diazenyl]-2-hydroxy-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

139-56-0

139-56-0 structure

139-56-0 structure

Name: Benzoic acid,5-[2-[4-(aminosulfonyl)phenyl]diazenyl]-2-hydroxy-
Chemical Name: (3E)-6-oxo-3-[(4-sulfamoylphenyl)hydrazinylidene]cyclohexa-1,4-diene-1-carboxylic acid
CAS Number: 139-56-0
Molecular Formula: C₁₃H₁₁N₃O₅S
Molecular Weight: 321.309
Create Date: 2018-06-23 19:50:38
Modify Date: 2025-08-23 11:56:06

Name	(3E)-6-oxo-3-[(4-sulfamoylphenyl)hydrazinylidene]cyclohexa-1,4-diene-1-carboxylic acid
Synonyms	Lutazol Salazosulfamide Oftazol EINECS 205-366-7 2-Hydroxy-5-[(4-sulfamoylphenyl)diazenyl]benzoic acid Chromo-Sulfol Benzoic acid, 5-[2-[4-(aminosulfonyl)phenyl]diazenyl]-2-hydroxy- Ophtazol Salosept Salazosulfamidum Salazosulfamida

Density	1.6±0.1 g/cm3
Boiling Point	639.9±65.0 °C at 760 mmHg
Molecular Formula	C₁₃H₁₁N₃O₅S
Molecular Weight	321.309
Flash Point	340.8±34.3 °C
Exact Mass	321.041931
PSA	150.79000
LogP	2.45
Vapour Pressure	0.0±2.0 mmHg at 25°C
Index of Refraction	1.690

HS Code	2935009090

HS Code	2935009090
Summary	2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

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