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: (8E)-7-oxo-8-[(4-sulfophenyl)hydrazinylidene]naphthalene-1,3-disulfoni c acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

2657-89-8

2657-89-8 structure

2657-89-8 structure

Name: (8E)-7-oxo-8-[(4-sulfophenyl)hydrazinylidene]naphthalene-1,3-disulfoni c acid
Chemical Name: 7-oxo-8-[(4-sulfophenyl)hydrazinylidene]naphthalene-1,3-disulfonic acid
CAS Number: 2657-89-8
Molecular Formula: C₁₆H₁₂N₂O₁₀S₃
Molecular Weight: 488.46900
Create Date: 2017-10-24 21:04:53
Modify Date: 2025-09-13 18:21:34

Name	7-oxo-8-[(4-sulfophenyl)hydrazinylidene]naphthalene-1,3-disulfonic acid
Synonyms	7-hydroxy-8-(4-sulfo-phenylazo)-naphthalene-1,3-disulfonic acid 7-Hydroxy-8-(4-sulfo-phenylazo)-naphthalin-1,3-disulfonsaeure 1,3-Naphthalenedisulfonicacid,7-hydroxy-8-[2-(4-sulfophenyl)diazenyl] 1-(4'-Sulfophenylazo)-2-naphthol-6,8-disulfonic acid (Benzol-sulfonsaeure-(1))-(4 azo 1)-(naphthol-2-disulfonsaeure-(6.8)) 1,3-Naphthalenedisulfonic acid,7-hydroxy-8-[(p-sulfophenyl)azo]-(7CI,8CI) 1,3-Naphthalenedisulfonicacid,7-hydroxy-8-[(4-sulfophenyl)azo]-(9CI) Orange AB

Density	1.85g/cm3
Molecular Formula	C₁₆H₁₂N₂O₁₀S₃
Molecular Weight	488.46900
Exact Mass	487.96500
PSA	229.71000
LogP	4.15420
Index of Refraction	1.749

HS Code	2927000090

HS Code	2927000090
Summary	2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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