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768375

Azobisisobutyronitrile

12 wt. % in acetone

Synonym(s):

2,2′-Azobis(2-methylpropionitrile) solution, radical initiator, α,α,′-Azoisobutyronitrile solution, AIBN solution

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100 mL

Estimated to ship TODAYfromMILWAUKEE

$108.00
$91.80
500 mL

Estimated to ship TODAYfromMILWAUKEE

$369.00

About This Item

Empirical Formula (Hill Notation):
C8H12N4
CAS Number:
78-67-1
Molecular Weight:
164.21
UNSPSC Code:
12162002
PubChem Substance ID:
329767372
MDL number:
MFCD00013808

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form

liquid

Quality Segment

100

concentration

12 wt. % in acetone

refractive index

n20/D 1.368

density

0.808 g/mL at 25 °C

storage temp.

2-8°C

SMILES string

CC(C)(\N=N\C(C)(C)C#N)C#N

InChI

1S/C8H12N4/c1-7(2,5-9)11-12-8(3,4)6-10/h1-4H3/b12-11+

InChI key

OZAIFHULBGXAKX-VAWYXSNFSA-N

General description

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.

Application

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

Features and Benefits

Decomposes unimolecularly at good rates without much variation from one solvent to another.

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This Item
1163001-7220441090
Azobisisobutyronitrile 12 wt. % in acetone

Sigma-Aldrich

768375

Azobisisobutyronitrile

2,2′-Azobis(2-methylpropionitrile) purum, ≥98.0% (GC)

Sigma-Aldrich

11630

2,2′-Azobis(2-methylpropionitrile)

2,2′-Azobis(2-methylpropionitrile) SAJ first grade, ≥98.0%

Sigma-Aldrich

01-7220

2,2′-Azobis(2-methylpropionitrile)

2,2′-Azobis(2-methylpropionitrile) 98%

Sigma-Aldrich

441090

2,2′-Azobis(2-methylpropionitrile)

description

12 wt. % in acetone

description

purum, ≥98.0% (GC)

description

SAJ first grade, ≥98.0%

description

98%

concentration

12 wt. % in acetone

concentration

-

concentration

-

concentration

-

density

0.808 g/mL at 25 °C

density

-

density

-

density

-

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

-

storage temp.

2-8°C

refractive index

n20/D 1.368

refractive index

-

refractive index

-

refractive index

-

form

liquid

form

solid

form

-

form

powder

Quality Level

100

Quality Level

200

Quality Level

-

Quality Level

200

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

target_organs

Central nervous system

supp_hazards

EUH044,EUH066

Storage Class

3 - Flammable liquids

flash_point_f

1.4 °F

flash_point_c

-17 °C

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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. Can I use AIBN in 12wt% acetone without recrystallization or distillation? (in case of polymerization)

    1 answer

    1. Product 768375 is a ready-to-use product, however, the performance varies owing to different polymerization reactions. It is recommended to check more reference papers:
      https://www.sigmaaldrich.com/search/768375?focus=papers&page=1&perpage=30&sort=relevance&term=768375&type=citation_search

      Helpful?

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