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1001-56-5

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1001-56-5 Usage

General Description

Buta-2,3-dienenitrile, also known as crotononitrile, is a chemical compound with the molecular formula C4H5N. It is a colorless liquid with a pungent odor, and it is highly flammable. Buta-2,3-dienenitrile is commonly used as a chemical intermediate in the production of various other compounds, including pharmaceuticals, insecticides, and dyes. It is also used as a building block in the synthesis of organic molecules. However, buta-2,3-dienenitrile is considered to be hazardous, as it is toxic and can cause irritation to the skin, eyes, and respiratory system upon exposure. It is important to handle and store buta-2,3-dienenitrile with proper safety precautions to minimize the risk of accidents and health hazards.

Check Digit Verification of cas no

The CAS Registry Mumber 1001-56-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,0,0 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1001-56:
(6*1)+(5*0)+(4*0)+(3*1)+(2*5)+(1*6)=25
25 % 10 = 5
So 1001-56-5 is a valid CAS Registry Number.
InChI:InChI=1/C4H3N/c1-2-3-4-5/h3H,1H2

1001-56-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name buta-2,3-dienenitrile

1.2 Other means of identification

Product number -
Other names 2,3-butadienenitrile

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1001-56-5 SDS

1001-56-5Relevant articles and documents

Bouchy et al.

, p. 211 (1973)

Production of Acrylonitrile and Other Unsaturated Nitriles from Hydrocarbons Using a Plasma

Henis, Neil B.H.,So, Ying-Hung,Miller, Larry L.

, p. 4632 - 4633 (1981)

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Production of Acrylonitrile and Other Unsaturated Nitriles from Alkenes and Alkynes

Henis, Neil B.,Miller, Larry L.

, p. 2526 - 2529 (1982)

Passage of unsaturated organic molecules trough a 13.56-MHz radio-frequency discharge, in the presence of cyanogen, results in the formation of unsaturated nitriles.Acrylonitrile was the major product from ethylene, propylene, acrolein, methyl vinyl ketone, or 1,1,1-trifluoropropylene. 1-Butene, 2-butene, and isobutylene gave mixtures of nitrile products with the CN situated at vinylic or allylic positions. 2-Butyne gave 1-cyanopropyne.Other compounds gave only low yields of nitriles and considerable polymer.The effects of power, pressure, flow rate, and ratios of reactants on the yields of acrylonitrile from propylene and cyanogen were studied.A typical power yield of acrylonitrile was 30 g kW-1 h-1.Maximum material yields of nitrile products were obtained at intermediate powers and pressures.The products are consistent with a reaction scheme involving attack of initially formed cyano radicals on the organic substrate.This step forms activated radical intermediates, which decay through elimination of an atom or group.The atom or group which is most weakly bound is preferentially lost.

3-pyridazinylnitrenes and 2-pyrimidinylnitrenes

Torker, Sebastian,Kvaskoff, David,Wentrup, Curt

, p. 1758 - 1770 (2014/03/21)

Mild flash vacuum thermolysis of tetrazolo[1,5-b]pyridazines 8T generates small amounts of 3-azidopyridazines 8A (8aA, IR 2145, 2118 cm-1; 8bA, 2142 cm-1). Photolysis of the tetrazoles/azides 8T/8A in Ar matrix generates 3-pyridazinylnitrenes 9, detected by ESR spectroscopy (9a: D/hc = 1.006; E/hc = 0.003 cm-1). Cyanovinylcarbenes 11, derived from 4-diazobut-2-enenitriles 10, are also detected by ESR spectroscopy (11a: D/hc = 0.362; E/hc = 0.021 cm-1). Carbenes 11 rearrange to cyanoallenes 12 and 3-cyanocyclopropenes 13. Triazacycloheptatetraenes 20 were not observed in the photolyses of 8. Photolysis of tetrazolo[1,5-a]pyrimidines/2- azidopyridmidines 18T/18A in Ar matrices at 254 nm yields 2-pyrimidinylnitrenes 19, observable by ESR, UV, and IR spectroscopy (19a: ESR: D/hc = 1.217; E/hc = 0.0052 cm-1). Excellent agreement with the calculated IR spectrum identifies the 1,2,4-triazacyclohepta-1,2,4,6-tetraenes 20 (20a, 1969 cm -1; 20b, 1979 cm-1). Compounds 20 undergo photochemical ring-opening to 1-isocyano-3-diazopropenes 23. Further irradiation also causes Type II ring-opening of pyrimidinylnitrenes 19 to 2-(cyanimino)vinylnitrenes 21 (21a: D/hc = 0.875; E/hc = 0.00 cm-1), isomerization to cyaniminoketenimine 25 (2044 cm-1), and cyclization to 1-cyanopyrazoles 22. The reaction mechanisms are discussed and supported by DFT calculations on key intermediates and pathways. There is no evidence for the interconversion of 3-pyridazinylnitrenes 9 and 2-pyrimidinylnitrenes 19.

Process for producing 5-amino-3-methylpyrazole

-

, (2008/06/13)

A process for producing 5-amino-3-methylpyrazole which comprises reacting hydrazine with a reaction intermediate containing at least one compound selected from the group consisting of 3-chloro-3-butenonitrile and 2,3-butadienenitrile, which intermediate is obtainable from 2,3-dichloropropene and hydrocyanic acid. A process for producing 5-amino-4-chloro-3-methylpyrazole which comprises chlorinating 5-amino-3-methylpyrazole obtainable by the above-mentioned reaction, in the presence of hydrochloric acid.

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