2,2'-Azobis(2-methylpropionitrile)

ChemicalBook > CAS DataBase List > 2,2'-Azobis(2-methylpropionitrile)

2,2'-Azobis(2-methylpropionitrile)

Description Uses Uses Recrystallization Temperature of initiator Chemical properties Uses Production method category Toxicity grading Acute toxicity Explosive hazardous characteristics Flammability hazard characteristics Storage characteristics Extinguishing agent

Product Name: 2,2'-Azobis(2-methylpropionitrile)
CAS No.: 78-67-1
Chemical Name: 2,2'-Azobis(2-methylpropionitrile)
Synonyms: AIBN;AZOBISISOBUTYRONITRILE;AZOISOBUTYRONITRILE;2,2'-AZOBISISOBUTYRONITRILE;2,2-AZOBIS(2-METHYLPROPIONITRILE);AIVN;Vazo;AZDH;Vazo 64;Porofor 57
CBNumber: CB2494212
Molecular Formula: C8H12N4
Formula Weight: 164.21
MOL File: 78-67-1.mol

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2,2'-Azobis(2-methylpropionitrile) Property

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)

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Safety

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

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H242Heating may cause a fire

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P235Keep cool.

P273Avoid release to the environment.

P370+P378In case of fire: Use … for extinction.

P403Store in a well-ventilated place.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 441090
Product name: 2,2′-Azobis(2-methylpropionitrile)
Purity: 98%
Packaging: 25g
Price: $56.7
Updated: 2024/03/01

Sigma-Aldrich

Product number: 441090
Product name: 2,2′-Azobis(2-methylpropionitrile)
Purity: 98%
Packaging: 100g
Price: $175
Updated: 2024/03/01

Sigma-Aldrich

Product number: 768375
Product name: Azobisisobutyronitrile
Purity: 12wt. % in acetone
Packaging: 100ml
Price: $96.5
Updated: 2024/03/01

Sigma-Aldrich

Product number: 768375
Product name: Azobisisobutyronitrile
Purity: 12wt. % in acetone
Packaging: 500ml
Price: $336
Updated: 2024/03/01

Sigma-Aldrich

Product number: 755745
Product name: 2,2′-Azobis(2-methylpropionitrile)
Purity: recrystallized, 99%
Packaging: 1g
Price: $47.2
Updated: 2024/03/01

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2,2'-Azobis(2-methylpropionitrile) Chemical Properties,Usage,Production

Description

Azobisisobutyronitrile (abbreviated AIBN) is an organic compound with the formula [(CH3)2C(CN)]2N2. This white powder is soluble in alcohols and common organic solvents but is insoluble in water. It is often used as a foamer in plastics and rubber and as a radical initiator. It's soluble in a wide variety of organic solvents, including alcohol-based solvents. Insoluble in water and denser than water. Moderately toxic by ingestion. Readily ignited by sparks or flames. Burns intensely and persistently. Toxic oxides of nitrogen produced during combustion. Used as a catalyst, in vinyl polymerizations and a blowing agent for plastics.

Uses

2,2'-Azobis(2-methylpropionitrile) is used as an initiator in polymer radical polymerization because its molecules can easily undergo split reactions and form molecules with high activation energy. 2,2'-Azobis(2-methylpropionitrile) (AIBN) is the most commonly used azo initiator. Its characteristic is that the decomposition reaction is relatively stable, only one kind of free radical is generated, and basically no induced decomposition occurs, so it is often used in the kinetics research of free radical polymerization.

Uses

Azobisisobutyronitrile (AIBN) is an azo-compound and is widely used as a free radical initiator. This compound has labile carbon-nitrogen covalent bond which undergoes homolytic scission under thermal, chemical or photochemical conditions producing free radicals. They are useful in many reactions like halogenation, polymerisation of vinyl monomers, grafting reactions, curing of rubbers and unsaturated polymers and cross-linking of polyolefins. AIBN can be used as an initiator in the synthesis of highly cross-linked Poly(divinylbenzene) (PDVB) polymers. It also can be used as an initiator in the polymerization process of 2-hydroxyethyl methacrylate (HEMA).

Recrystallization

1, recrystallize twice a chemically pure 2,2'-Azobis(2-methylpropionitrile) with methanol (by 1:12) and air-dry in a ventilated dark overnight, then place in a vacuum oven with phosphorus pentoxide as a desiccant, vacuum degree 1.013 * 105Pa, under reduced pressure, and dry to 24h.Refined 2,2'-Azobis(2-methylpropionitrile) needs to be put in the colored jar, sealed and kept in cold dark place.
2, add 50ml 95% alcohol into 150ml Erlenmeyer flask equipped with a reflux condenser , heat in a water bath to near boiling, quickly add 5gAIBN, shak to make it be completely dissolved (boiling time not too long, if too long, severe decomposition ), filter hot solution rapidly ( the funnel and filter flask using for filter must be warmed) and cool the filtrate to give white crystals, dry in a vacuum desiccator, a melting point of 102℃, store the product in a brown bottle, cryopreservation.

Temperature of initiator

2,2'-Azobis(2-methylpropionitrile) is a particularly excellent free radical initiator , nitrogen will be released by the decomposition when it is heated to about 70 ° C and free radicals (CH3) 2CCN is generated which is affected by cyano radical , more stable. It can react with other organic substrates, and then generates a new radical in annihilation of itself , causing chain reaction of free radicals (see radical reaction). At the same time, it can also be two coupled molecules, generating highly toxic tetramethoxysilane succinonitrile (TMSN).
AIBN melts when heated to 100~107 ° C and dramaticly decomposes, releases nitrogen and several organic nitrile compound toxic to humans, and may cause an explosion, fire. Slowly decomposes at room temperature, and it should be stored at 10 ° C or less. Away from fire, heat source. poisonous. Metabolizes into hydrocyanic acid in the blood, liver, brain and other tissues of animals.
The above information is edited by the Chemicalbook of Tian Ye.

Chemical properties

White columnar crystals or white crystalline powder. Insoluble in water, soluble in methanol, ethanol, acetone, ether, petroleum ether and aniline and other organic solvents.

Uses

The polymerization initiator for Vinyl chloride, vinyl acetate, acrylonitrile and blowing agent for rubber, plastic , in an amount of 10% to 20%.
This product can also be used as curing agents, pesticides and organic synthesis intermediates.
This product is a highly toxic substance, mice are orally LD5017.2~25mg/kg, the organic cyanide released by the decomposition when it is heated has a greater poison on the human body .

Production method

Acetone, hydrazine hydrate and sodium cyanide as raw materials:
The temperature of condensation reaction above is 55~60 ℃, reaction time is 5h, and then cool down to 25~30 ℃ ,time is 2h. When to be cooled to below 10 ℃,begin to flow chlorine and carry out the reaction at below 20 ℃.
Ratio of material: HCN: acetone: hydrazine = 1L:1.5036kg:0.415kg.
Acetone cyanide alcohol and hydrazine hydrate react, and then the use of chlorine oxidation or amino nitrile with sodium hypochlorite oxidation.

Toxicity grading

Middle toxic

Acute toxicity

Oral-rat LDL0: 670 mg/kg; Oral-Mouse LD50: 700 mg/kg

Explosive hazardous characteristics

Explosive when mixed with oxidants ; easily oxidized, unstable and intense heat decomposition, explosive when heated with heptane, acetone

Flammability hazard characteristics

Flammable in case of fire, high temperature, oxidant ; decomposition and generating combustible gas in case of thermal ; combustion produces toxic fumes of nitrogen oxides

Storage characteristics

Treasury ventilation low-temperature drying; and separated from oxidants

Extinguishing agent

Water, dry sand, carbon dioxide, foam, 1211 fire extinguishing agent

Description

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.

Chemical Properties

Azobisisobutylonitrile is a white crystalline compound.

Uses

Used as an initiator in the synthesis of highly cross-linked Poly(divinylbenzene) (PDVB) polymers. 1 Used as an initiator in the polymerization process of 2-hydroxyethyl methacrylate (HEMA). 2

Uses

foaming agent and inhibitor in plastic and elastomer materials

Uses

2,2′-Azobis(2-methylpropionitrile) (AIBN) is a radical initiator. AIBN solution can be used to initiate radical-induced reactions, specifically free-radical polymerizations. It can be used in:

Synthesis of styrene-vinyl pyridine diblock copolymers by reversible addition-fragmentation chain transfer (RAFT) polymerization.
Preparation of silicon oxycarbide glasses.
Synthesis of poly [N-(p-vinyl benzyl) phthalimide] for the preparation of titanium dioxide composites for electrophoretic displays.

Definition

ChEBI: (E)-Azobis(isobutyronitrile) is an azo compound.

General Description

Insoluble in water and denser than water. Moderately toxic by ingestion. Readily ignited by sparks or flames. Burns intensely and persistently. Toxic oxides of nitrogen produced during combustion. Used as a catalyst, in vinyl polymerizations and a blowing agent for plastics.

Air & Water Reactions

Dust may form an explosive mixture in air. Insoluble in water.

Reactivity Profile

Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact. Self-accelerating decomposition may occur if the specific control temperature is not maintained. These materials are particularly sensitive to temperature rises. 2,2'-Azobis(2-methylpropionitrile) is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Hazard

Toxic by ingestion.

Flammability and Explosibility

Not classified

Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. Easily oxidized, unstable. Violent exothermic decomposition when heated. Solution in acetone may decompose explosively. Explodes when heated with heptane. When heated to decomposition it emits toxic fumes of NO, and CN-. See also NITRILES. A free-radcal generator.

Potential Exposure

Azobisisobutylonitrile is both a nitrile and azo compound. Used as a polymerization initiator, free radical generator (or initiator); as a catalyst in vinyl polymerizations; as a blowing agent for elastomers and plastics.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Note: Use amyl nitrate capsules if symptoms develop. Allarea employees should be trained regularly in emergencymeasures for cyanide poisoning and in CPR. A cyanide antidote kit should be kept in the immediate work area and mustbe rapidly available. Kit ingredients should be replaced every1°2 years to ensure freshness. Persons trained in the use ofthis kit, oxygen use, and CPR must be quickly available.

storage

Color Code—Red Stripe: Flammability Hazard: Donot store in the same area as other flammable materials. Priorto working with this chemical you should be trained on itsproper handling and storage. Azodiisobutyronitrile must bestored to avoid contact with acetone, lithium, aluminumhydride, and water, since violent reactions occur. Azodiisobutyronitrile is self-reactive and will explode at elevated temperatures. It should be stored under nitrogen, dry ice, or ice.Sources of ignition, such as smoking and open flames, areprohibited where this chemical is used, handled, or stored in amanner that could create a potential fire or explosion hazard.

Shipping

UN3234 Self-reactive solid type C, temperature controlled materials, Hazard Class: 4.1; Labels: 4.1- Flammable solid, Technical Name Required.

Incompatibilities

Flammable; dust may form explosive mixture with air. Unstable and easily oxidized material; keep away from oxidizers, strong acids. Keep at temperature not ≧30° C (this may vary by manufacturer). Risk of explosion from heat, shock, friction. Warming causes production of tetramethylsuccinonitrile and cyanide fumes. Keep away from acetone and other ketones, alcohols, lithium, aluminum, aldehydes, and hydrocarbons, such as heptane. Azo compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. This chemical is sensitive to prolonged exposure to heat. This chemical is incompatible with strong oxidizing agents.

2,2'-Azobis(2-methylpropionitrile) Preparation Products And Raw materials

Raw materials

BUTYRONITRILE Sodium hypochlorite Acetone cyanohydrin Hydrazinium hydroxide solution Acetone Chlorine Sodium cyanide

Preparation Products

4-[4-(BROMOMETHYL)PHENYL]-1,2,3-THIADIAZOLE Dichloroacetyl chloride super absorbent resin synthesized by microwave cation ion radiation 4-(PIPERIDINE-1-CARBONYL)PHENYLBORONIC ACID 2,1,3-Benzothiadiazol-5-ylmethanol 4-(2-CYANOETHYLAMINOCARBONYL)PHENYLBORONIC ACID Dideoxyinosine 2,1,3-Benzothiadiazole-5-carbaldehyde 3-(2-CYANOETHYLAMINOCARBONYL)PHENYLBORONIC ACID graft copolymer PAA-G-PIPA microsphere 2-(Bromomethyl)benzoic acid 2,6-Dichlorobenzaldehyde 5-Dibenzosuberenone 2-(DIPHENYLPHOSPHINO)ETHYLTRIETHOXYSILANE FTHALIDE 4-Benzofurazancarboxaldehyde 2-TRIFLUOROMETHYLQUINOLINE-7-CARBOXYLIC ACID 4-(1,2,3-THIADIAZOL-4-YL)BENZALDEHYDE a new kind of liquid crystal copolymer 3，7-dichloro-8-dichloro methyl quinoline METHYL 4-(BROMOMETHYL)-3-METHOXYBENZOATE 1-(3-CHLORO-4-((CYCLOPROPYLAMINO)METHYL)PHENYL)ETHANONE 3-QUINOLIN-2-YLPROPANOIC ACID 4-(1,2,3-THIADIAZOL-4-YL)BENZYLAMINE HYDROCHLORIDE 2-Chlorobenzyl chloride Maleic acid-allyl alcohol copolymer dimethylacrolyl phenoxy propanestyrene copolymer optical plastics METHYL ALPHA-BROMO-2-CHLOROPHENYLACETATE 5-(BROMOMETHYL)-2,1,3-BENZOTHIADIAZOLE amphoteric super absorbent resin synthesized by microwave radiation Dicofol 3-PHENOXYPHENYLACETONITRILE 3-CHLORO-4-((CYCLOPROPYLAMINO)METHYL)BENZALDEHYDE 11-Bromoundecanoic acid Deflazacort 3-(PIPERIDINOMETHYL)BENZALDEHYDE 2-Nitroacetophenone 2,4-Dichlorobenzyl chloride 2-Nitrobenzyl bromide 4-(PYRROLIDIN-1-YLMETHYL)BENZENEBORONIC ACID, PINACOL ESTER 97%1-[4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)BENZYL]PYRROLIDINE

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Quzhou Rundong Chemical (Technology) Co.

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Struchem Co., Ltd.

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View Lastest Price from 2,2'-Azobis(2-methylpropionitrile) manufacturers

Hebei Weibang Biotechnology Co., Ltd

Product: 2,2'-Azobis(2-methylpropionitrile) 78-67-1
Price: US $10.00/kg
Min. Order: 20kg
Purity: 99.5%
Supply Ability: 100 TON
Release date: 2024-10-29

Hebei Yanxi Chemical Co., Ltd.

Product: 2,2'-Azobis(2-methylpropionitrile) 78-67-1
Price: US $20.00-10.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 200tons
Release date: 2023-04-27

Hebei Chuanghai Biotechnology Co,.LTD

Product: Azobisisobutyronitrile 78-67-1
Price: US $5.00-2.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10000kg
Release date: 2024-08-27

78-67-1, 2,2'-Azobis(2-methylpropionitrile)Related Search:

2,2'-Azobis(2,4-dimethyl)valeronitrile Diethylstilbestrol 2,2'-Azodi(2-methylbutyronitrile) N,N-Dimethylformamide Dimethyl sulfoxide Dimethyl fumarate Dimethyl sulfide Dimethyl phthalate Dimethyl ether Diisopropyl azodicarboxylate ETHANE Dimethyl 2,2'-azobis(2-methylpropionate) Diethyl azodicarboxylate Azodicarbonamide 2-(broMoMethyl)benzaMide 3-AMINOPIPERIDINE 3-(bromomethyl)-Benzenamine (S)-2-((6-(3-aMinopiperidin-1-yl)-3-Methyl-2,4-dioxo-3,4-dihydropyriMidin-1(2H)-yl)Methyl)benzonitrile

A,A'-AZOISOBUTYRONITRILE

AIBN

ALPHA,ALPHA'-AZOBISISOBUTYRONITRILE

ALPHA,ALPHA-AZOBISISOBUTYRONITRILE

ALPHA,ALPHA'-AZO-DI-ISO-BUTYRONITRILE

ALPHA,ALPHA'-AZOISOBUTYRONITRILE

2,2'-dicyano-2,2'-azopropane

2,2'-Dimethyl-2,2'-azodipropionitrile

2,2'-AZOBISISOBUTYRONITRILE

2,2’-azobis[2-methylpropanenitrile]

2,2-Azobsisobutyronitril

2,2-dimethyl-2,2-azodipropiononitrile

Aceto AZIB

acetoazib

AIVN

alpha,alpha’-azobisisobutylonitrile

alpha,alpha’-azodiisobutyricaciddinitrile

alpha,alpha'-Azobis(isobutylonitrile)

alpha,alpha'-Azodi(isobutyric acid dinitrile)

alpha,alpha'-Azodisobutyric acid dinitrile)

alpha-Azo-iso-butyronitrile

AZDH

Azobisisobutylonitrile

ChKhZ 57

chkhz57

Ficel AZDN-LF

Genitron

Genitron AZDN

Genitron AZDN-FF

N,N'-Bis(2-cyano-2-propyl)diazene

Pianofor An

pianoforan

Poly-zole azdn

poly-zoleazdn

Porofor 57

Porofor N

porofor57

porofor-57

poroforn

Porophor N

porophorn

Propanenitrile, 2,2'-azobis*2-methyl-

Propanenitrile, 2,2'-azobis[2-methyl-

Propionitrile, 2,2'-azobis*2-methyl-

Propionitrile, 2,2'-azobis[2-methyl-

V-60

Vazo

Vazo 64

vazo64

2,2'-Azobis-(2-methylpropanenitrile)

2,2-azobis[2-methyl-]-propanenitrile (AZDH)

2,2'-AZOBIS(ISOBUTYRONITRILE), 99+% FORBIDDEN TO SHIP

A,A'-AZOISOBUTYRONITRILE FOR SYNTHESIS

2,2'-Azobis

(E)-2,2'-(diazene-1,2-diyl)bis(2-Methylpropanenitrile)

2,2-azo two differentDing Jing

2,2′-Azobis(2-methylpropionitrile) solution

Free radical initiator