2-Butynoic acid

Basic Information

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CAS Number

590-93-2

Molecular Formula

C4H4O2

Molecular Weight

30.07 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Nitriles

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Physical State

White to Yellow Solid

Melting Point

78-80 °C

Boiling Point

203°C

Water Solubility

Soluble in water. Slightly soluble in methanol and chloroform.

Flash Point

200-203°C

Solubility

water: soluble50mg/mL, clear to very slightly hazy, colorless to very faintly yellow

Refractive Index

1.3918 (estimate)

SMILES

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CC#CC(=O)O

InChI

InChI=1S/C4H4O2/c1-2-3-4(5)6/h1H3,(H,5,6)

InChIKey

LUEHNHVFDCZTGL-UHFFFAOYSA-N

LogP

1.0262

pKa

2.62(at 25℃)

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

112

Safety Information

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GHS Hazard Pictograms

H314

Hazard Statement

H314 Causes severe skin burns and eye damage
Skin corrosion/irritation

Hazard Class

Class 8 Class 8

Synonyms & References

English

but-2-ynoic acid
1D-262
butynoic acid
2-Butynoic acid
2-butylnoic acid
CS-W007936
FT-0611642
MFCD00004363
DTXSID4060444
W3AM9ANZ22
EINECS 209-695-7
GTPL12862
small carboxylic acid 15
Tetrolsaure
W-105344
TetrolsA currencyure
1D-226
NSC174116
AM90222
2-Butynoic acid, 98%
590-93-2
Tetrolic acid
J-802074
NSC-174116
0D-226
0D-262
EN300-91328
NSC 174116
0D-154
Q30693372
propinecarboxylic acid

MDL Number

MFCD00004363

Customs Code

2916190090

FAQ

What is 2-Butynoic acid (CAS: 590-93-2)?

2-Butynoic acid, also known as butynoic acid, is a chemical compound with the CAS number 590-93-2. It has the chemical formula C4H6O2 and is a ketone. This organic compound is colorless and has a pungent odor.

What are the main uses of 2-Butynoic acid (CAS: 590-93-2)?

2-Butynoic acid is primarily used in pharmaceuticals as a precursor for the synthesis of other organic compounds. It is also used in the production of plastics and in research for organic synthesis.

Is 2-Butynoic acid (CAS: 590-93-2) safe?

2-Butynoic acid can be considered safe under proper handling procedures. However, it is corrosive and can cause skin and eye irritation. Protective measures include wearing gloves and goggles, and ensuring proper ventilation during use.

How should 2-Butynoic acid (CAS: 590-93-2) be stored?

2-Butynoic acid should be stored in a cool, dry place away from heat and sources of ignition. It should be kept in a tightly sealed container to prevent degradation. Exposure to light and moisture should be minimized to avoid chemical changes.