2,2'-Azobis(2-methylpropionitrile) , 99%, heavy crystals , 78-67-1

Synonym(s):
AIBN;Azobisisobutyronitrile;Free radical initiator;radical initiator;AIBN solution

CAS NO.：78-67-1

Empirical Formula: C8H12N4

Molecular Weight: 164.21

MDL number: MFCD00013808

EINECS: 201-132-3

Update time: 2022-07-08

PRODUCT Properties

Melting point:	102-104 °C (dec.)(lit.)
Boiling point:	281.68°C (rough estimate)
Density	1.11
vapor pressure	0.81Pa at 24.85℃
refractive index	n20/D1.495
Flash point:	4℃
storage temp.	2-8°C
solubility	Chloroform (Slightly), Methanol (Slightly)
form	Solid
color	Crystals from EtOH
Odor	odorless
Water Solubility	Insoluble
Merck	13,920
BRN	1708400
Stability:	Stability Flammable solid. Shock sensitive. Thermally unstable. May be explosive in combination with acetone or heptane. Incompatible with oxidizing agents.
InChIKey	OZAIFHULBGXAKX-VAWYXSNFSA-N
LogP	1.1 at 25℃
CAS DataBase Reference	78-67-1(CAS DataBase Reference)
NIST Chemistry Reference	2,2'-Azo-bis-isobutyronitrile(78-67-1)
EPA Substance Registry System	Azobis(isobutyronitrile) (78-67-1)

Description and Uses

Azobisisobutylonitrile is a white crystallinecompound. Molecular weight= 164.21; Specific gravity(H2O:1)= 1.11 at 25℃; Boiling point= decomposes;Freezing/Melting point= 99°103℃ (decomposes);Autoignition temperature= 63℃. NFPA 704 M HazardIdentification (based on NFPA-704M Rating System):Health 3, Flammability 2, Reactivity 2. Insoluble in water.

foaming agent and inhibitor in plastic and elastomer materials

Safety

Symbol(GHS)	GHS02,GHS07
Signal word	Danger
Hazard statements	H242-H302+H332-H412
Precautionary statements	P210-P235-P273-P304+P340+P312-P370+P378-P403
Hazard Codes	E,Xn,F,Xi
Risk Statements	2-11-20/22-52/53-67-65-48/20-38-63-66-36
Safety Statements	39-41-47-61-62-36/37-16-26
RIDADR	UN 3234 4.1
WGK Germany	2
RTECS	UG0800000
F	4.4
HazardClass	4.1
PackingGroup	II
HS Code	29269090
Hazardous Substances Data	78-67-1(Hazardous Substances Data)
Toxicity	LDLo orl-rat: 670 mg/kg 34ZIAG 0,117,69