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2-Butynoic Acid

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2-Butynoic Acid / CAS : 590-93-2

Appearance White to yellow powder UN 3261 8/PG 2
HS 2916190090 DG Class 8
Synonyms But-2-Ynoic acid; 1-Propynecarboxylic acid; 3-Methylpropiolic acid; Tetrolic ACID; Methylacetylenecarboxylic acid; But-2-Ynoic acid Triclinic Polymorph; Tetrolsaure; Butynoic acid; 2-Butynic acid; Tetrolsa Currencyure; Propinecarboxylic acid; Propynecarboxylic acid
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Properties

Summary

Formula
C4H4O2
Molecular Mass
84.073
Exact Mass
84.021126
PSA
37.30000
Logp
0.85
IUPAC
but-2-ynoic acid
SMILES
CC#CC(=O)O

Attribute classification

Matter Classification
organic
Category
Organic Chemical Materials > Carboxylic Acids and Derivatives

Chemical and Physical Properties

Melting Point
78-80 °C(lit.)
Density
0,9641 g/cm3
Boiling Point
200-203°C
Flash Point
90.9±15.2 °C
Appearance
White to yellow powder

Export information

HS Code
2916190090
Export Rebate
13%
UN No.
3261 8/PG 2
DG-Class
8
Risk Code
R34-20/21/22
Safety Label
C

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