Cas no for 74-99-7,Methylacetylene ACID Cas number search msds database,online free cas number chemistry search engine,cas number sigma aldrich

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Home > CAS No. Inquiry > 74-99-7

74-99-7

[CAS Name] Methylacetylene

[Formula] C3H4

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Basica Info

[CAS Name]Methylacetylene
[Alias]Propyne 96%; Propyne; prop-1-yne
[Number]74-99-7
[EINECS]200-828-4
[Formula]C3H4
[Molecular weight]40.0639

[Density]4570mmHg at 25°C

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Hangzhou Verychem Science And Technology Co.Ltd.

Propyne

CAS NO. 74-99-7

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Shanghai Wechem Technology Limited

Specification
Purity,% 97
Liquid phase (Wt. %)
Propane
Butane
Allene
Isobutylene
Acetonitrile
Quinol
2,6-Di-tert-butyl-4-methyl
Phenol (BHT)

transportation
DOT shipping name methyl acetylene
DOT classification 2.1
DOT label Compressible gas, flammable
UN NO. UN1954
CAS No. 74-99-7
CGA/BS341/DIN477 510/NO.4/NO.1

Technical Information
Cylinder condition @ 21.1°C gas
Combustion limit in air 1.7-39.9%
Natural temperature (°C)
Molecular weight (g/mol) 40.065
Specific gravity (air =1) 1.383
Critical temperature (°C) 129.24
Critical temperature (psig) 801.57

Application
Mainly used in organic synthesis and special fuels.

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