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Oxalic acid

CAS No.: 144-62-7
Synonyms:
Formula: C2H2O4
Exact Mass: 89.99530
Molecular Weight: 90.03490
PSA: 74.60000
LogP: -0.84440
Reference Price: $16/kg Post Buying Request
Description Feedback
Oxalic acid is an organic compound with the formula C2H2O4. It is a colorless crystalline solid that forms a colorless solution in water. Its condensed formula is HOOCCOOH, reflecting its classification as the simplest dicarboxylic acid. Its acid strength is much greater than that of acetic acid. Oxalic acid is a reducing agent and its conjugate base, known as oxalate (C 2O2− 4), is a chelating agent for metal cations. Typically, oxalic acid occurs as the dihydrate with the formula C2H2O4·2H2O. Excessive ingestion of oxalic acid or prolonged skin contact can be dangerous.

Properties Feedback
Appearance & Physical State:Odorless white solid
Density:1.9
Melting Point:189-191ºC
Flash Point:101-157ºC
Water Solubility:90 g/L (20 ºC)
Stability:Stable, but moisture sensitive. Incompatible with metals.
Vapor Pressure:<0.01 mm Hg ( 20 °C)
Vapor Density:4.4 (vs air)

Safety Info Feedback
Symbol:
GHS05

GHS07
Sign:Danger
hazard declaration:H302 + H312; H318
hazard declaration add:
waring notice:P280; P301 + P312 + P330; P305 + P351 + P338 + P310
Hazard Codes:Xn
Risk Statements:R21/22
Safety Statements:S24/25
RIDADR:UN 3261
WGK Germany:1
RTECS:RO2450000
Packing Group:III
Hazard Class:8
HS Code:2917111000

GC Analytical Method Total: 1 GC Analytical Method
Normal alkane RI, non-polar column, temperature ramp [Detail]
Column type Active phase Temperature (C) Retention Index (I) Reference
Capillary RTX-5 748. Setkova, Risticevic, et al., 2007
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MSDS


Synthesis Route Total: 1 Synthesis Route
 
6153-56-6
144-62-7
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Precursor and Product