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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Phenol,2-chloro-4-(2-phenyldiazenyl)-
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Purity: 98.0%
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6657-05-2

6657-05-2 structure

6657-05-2 structure

Name: Phenol,2-chloro-4-(2-phenyldiazenyl)-
Chemical Name: (4E)-2-chloro-4-(phenylhydrazinylidene)cyclohexa-2,5-dien-1-one
CAS Number: 6657-05-2
Molecular Formula: C₁₂H₉ClN₂O
Molecular Weight: 232.66600
Create Date: 2017-12-25 08:28:48
Modify Date: 2025-08-27 07:31:18

Name	(4E)-2-chloro-4-(phenylhydrazinylidene)cyclohexa-2,5-dien-1-one
Synonyms	4-Benzolazo-2-chlor-phenol 4-hydroxy-3-chloro phenyl azobenzene WLN: QR BG DNUNR Phenol,2-chloro-4-(phenylazo) 2-Chloro-4-(phenylazo)phenol 2-Chlor-4-phenylazo-phenol 3-Chlor-4-oxy-azobenzol

Density	1.25g/cm3
Boiling Point	347.2ºC at 760 mmHg
Molecular Formula	C₁₂H₉ClN₂O
Molecular Weight	232.66600
Flash Point	163.8ºC
Exact Mass	232.04000
PSA	44.95000
LogP	4.46100
Index of Refraction	1.612

CHEMICAL IDENTIFICATION

RTECS NUMBER :: SK5790000

CHEMICAL NAME :: Phenol, 2-chloro-4-(phenylazo)-

CAS REGISTRY NUMBER :: 6657-05-2

BEILSTEIN REFERENCE NO. :: 0912818

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C12-H9-Cl-N2-O

MOLECULAR WEIGHT :: 232.68

WISWESSER LINE NOTATION :: QR BG DNUNR

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 56 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#03754

HS Code	2927000090

95-57-8 structure

95-57-8

100-34-5 structure

100-34-5

~%

6657-05-2 structure

6657-05-2

Literature: Farmer; Hantzsch Chemische Berichte, 1899 , vol. 32, p. 3098 Full Text Show Details McPherson; Dubois Journal of the American Chemical Society, 1908 , vol. 30, p. 820

Precursor 2
95-57-8 100-34-5
DownStream 1
3964-52-1

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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