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p-Diazobenzenesulfonic acid

CAS No.
305-80-6
Chemical Name:
p-Diazobenzenesulfonic acid
Synonyms
Resorcinol Impurity 7;4-diazobenzenesulfonicacid;4-Diazophenylsulfonic acid;4-diazoniobenzenesulfonate;4-Sulfonatobenzenediazonium;p-Diazobenzenesulfonic acid;4-diazobenzenesulphonic acid;4-Sulfobenzenediazoniumhydroxide;Benzenesulfonic Acid Impurity 29;Benzenediazonium, 4-sulfo-, inner salt
CBNumber:
CB0336932
Molecular Formula:
C6H4N2O3S
Molecular Weight:
184.17
MDL Number:
MFCD00043219
MOL File:
305-80-6.mol
Last updated:2026-09-12 18:48:18

p-Diazobenzenesulfonic acid Properties

Melting point 104°
Boiling point -0.5°C
Density 1.538 (estimate)
refractive index 1.6430 (estimate)
color Needles from water
FDA UNII RPZ6A2S3KC
EPA Substance Registry System p-Diazobenzenesulfonic acid (305-80-6)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H335
Precautionary statements  P264-P280-P302+P352-P321-P332+P313-P362
Hazard Codes  E,Xi
Risk Statements  1-37/38
Safety Statements  26-36
RIDADR  UN 3226
TSCA  TSCA listed

p-Diazobenzenesulfonic acid price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Biosynth FD61408 4-Diazobenzenesulfonic acid - moistened with water (H2O~50%) 305-80-6 2mg $214.18 2026-06-04 Buy
Biosynth FD61408 4-Diazobenzenesulfonic acid - moistened with water (H2O~50%) 305-80-6 5mg $428.35 2026-06-04 Buy
Biosynth FD61408 4-Diazobenzenesulfonic acid - moistened with water (H2O~50%) 305-80-6 10mg $685.3 2026-06-04 Buy
Biosynth FD61408 4-Diazobenzenesulfonic acid - moistened with water (H2O~50%) 305-80-6 25mg $1285 2026-06-04 Buy
Biosynth FD61408 4-Diazobenzenesulfonic acid - moistened with water (H2O~50%) 305-80-6 50mg $2141.5 2026-06-04 Buy
Product number Packaging Price Buy
FD61408 2mg $214.18 Buy
FD61408 5mg $428.35 Buy
FD61408 10mg $685.3 Buy
FD61408 25mg $1285 Buy
FD61408 50mg $2141.5 Buy

p-Diazobenzenesulfonic acid Chemical Properties, Uses, Production

Uses

Reagent for determination of phenols, bilirubin, halides and amines. Irreversible probe in membrane protein studies.

Uses

4-Diazobenzenesulfonic Acid is a useful catalyst for cellobiose hydrolysis.

Definition

ChEBI: The aromatic diazonium ion that is diazotised 4-aminobenzenesulfonic acid.

Safety Profile

An unstable explosive which mayexplode when touched. Incompatible with metals. Store insmall quantities under refrigeration in loosely pluggedcontainers. Upon decomposition it emits toxic fumes ofNOx and SOx.

515-74-2
305-80-6
Synthesis of p-Diazobenzenesulfonic acid from 4-Amino-benzenesulfonic acid monosodium salt

p-Diazobenzenesulfonic acid Suppliers

Global Suppliers ( 23)
Supplier Tel Email Country ProdList Advantage
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Quality Control Solutions Ltd. 0755-66853366 13670046396 orders@qcsrm.com China 18188 56
Shanghai Kewel Chemical Co., Ltd. 021-64609169 18901607656 greensnown@163.com China 9883 50
Amadis Chemical Company Limited 571-89925085 sales@amadischem.com China 131885 58
Hefei TNJ Chemical Industry Co.,Ltd. +86-0551-65418671 +86-189 4982 3763 sales@tnjchem.com China 34526 58
Dayang Chem (Hangzhou) Co.,Ltd. +86-0571-88938639 17705817739 info@dycnchem.com China 52451 58
Hubei Xinyang Medical Technology Co., Ltd 15347293736 2853117764@yongstandards.com China 9999 58
Guangzhou Austine Biotechnology Co., LTD 15918640830 13268843209 1947181658@qq.com China 9235 58
Tianjin Jiayi Biotechnology Co., LTD 13261917876 13261917876 503591062@qq.com China 495 58
Jiangsu Aikon Biopharmaceutical R&D Co.,Ltd 025-5885952 15955137747 sales@aikonchem.com China 8012 58
P-SULFOBENZENEDIAZONIUM HYDROXIDE INNER SALT 4-diazobenzenesulfonicacid 4-Sulfobenzenediazoniumhydroxide benzenediazonium,4-sulfo-,hydroxide,innersalt 4-diazobenzenesulphonic acid 4-DIAZOBENZENESULFONIC ACID, MOISTENED W. WATER (H2O ~50%) 4-Diazophenylsulfonic acid 4-Sulfonatobenzenediazonium 4-diazoniobenzenesulfonate Benzenediazonium, 4-sulfo-, inner salt Benzenesulfonic Acid Impurity 29 Resorcinol Impurity 7 4-Diazobenzenesulfonic acid - moistened with water (H2O~50%) diazobenzenesulfonic acid, p-diazosulfanilic acid p-Diazobenzenesulfonic acid 305-80-6 N2C6H4SO3 +N2C6H4SO3 C6H4N2O3S