Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4,4'-Azobis(4-cyanovaleric acid)
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 4,4'-Azobis(4-cyanovaleric acid)
Price: ￥638.0/100g ￥218.0/25g
Purity: 98.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4,4'-Azobis(4-cyanovaleric acid)
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: 4,4'-Azobis(4-cyanovaleric acid)(2638-94-0)
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: 4,4'-Azobis(4-cyanovaleric acid)
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

2638-94-0

2638-94-0 structure

2638-94-0 structure

Name: 4,4'-Azobis(4-cyanovaleric acid)
Chemical Name: 4,4'-Azobis(4-cyanovaleric acid)
CAS Number: 2638-94-0
Molecular Formula: C₁₂H₁₆N₄O₄
Molecular Weight: 280.280
Create Date: 2019-01-18 22:39:36
Modify Date: 2025-08-23 12:45:56

Name	4,4'-Azobis(4-cyanovaleric acid)
Synonyms	Pentanoic acid, 4,4'-[(E)-1,2-diazenediyl]bis[4-cyano- ABCPA NC 25 Azocarboxy 4,4'-Azobis(4-cyanovaleric acid) Pentanoic acid, 4,4'-azobis[4-cyano- 4,4'-azobis(4-cyanopentanoic acid) 4,4'-Azobis(4-cyanov ACVA EINECS 220-135-0 4,4'-(E)-Diazene-1,2-diylbis(4-cyanopentanoic acid) azobis(cyanovalericacid) 4,4-Azobis(4-Cyanovaleric Acid) MFCD00002799 4,4'-[(E)-1,2-Diazenediyl]bis(4-cyanopentanoic acid) 4,4'-(Diazene-1,2-diyl)bis(4-cyanopentanoic acid) ABCVA

Density	1.2±0.1 g/cm3
Boiling Point	503.6±50.0 °C at 760 mmHg
Melting Point	118-125 °C (dec.)(lit.)
Molecular Formula	C₁₂H₁₆N₄O₄
Molecular Weight	280.280
Flash Point	258.3±30.1 °C
Exact Mass	280.117157
PSA	146.90000
LogP	1.31
Vapour Pressure	0.0±2.8 mmHg at 25°C
Index of Refraction	1.546

CHEMICAL IDENTIFICATION

RTECS NUMBER :: YV6190500

CHEMICAL NAME :: Valeric acid, 4,4'-azobis(4-cyano-

CAS REGISTRY NUMBER :: 2638-94-0

BEILSTEIN REFERENCE NO. :: 1729856

LAST UPDATED :: 199701

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C12-H16-N4-O4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 666 mg/kg

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

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,922,1986

Symbol	GHS02
Signal Word	Danger
Hazard Statements	H242
Personal Protective Equipment	Eyeshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes	F:Flammable;
Risk Phrases	R11
Safety Phrases	S15-S16-S22-S24/25-S36
RIDADR	UN 1325 4.1/PG 2
WGK Germany	2
RTECS	YV6190500
Packaging Group	II; III
Hazard Class	4.1
HS Code	2927000090

143-33-9 structure

143-33-9

123-76-2 structure

123-76-2

~%

2638-94-0 structure

2638-94-0

Literature: Haines; Waters Journal of the Chemical Society, 1955 , p. 4256,4259

Precursor 2
143-33-9 123-76-2
DownStream 3
5873-93-8 201611-92-9 870196-80-8

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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