C2H2O4
90.03 g/mol
Industrial ChemicalWarning
Oxalic acid
CAS144-62-7EC205-634-3
Category
Industrial Chemical
Compound Class
Organic Acid
Primary Use
Cleaning and bleaching agent
Oxalic acid is a simple dicarboxylic acid widely used as a cleaning and bleaching agent. It is also employed in photographic processing, textile dyeing and finishing, and the application of metallic patinas.
Cleaning and bleaching agentPhotographic processingTextile dyeing and finishing
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
Ammonium oxalate monohydrate
CAS6009-70-7
Leather tanning and fabric dyeing
StrongSame Parent
Oxalic acid dihydrate
CAS6153-56-6
Industrial acid for processing applications
ReferenceSame Category
2-Bromo-6-fluoropyridine
CAS144100-07-2
synthetic intermediate
ReferenceSame Category
Dimethyl capramide
CAS14433-76-2
Surfactant and solvent
ReferenceSame Category
Sodium ferrocyanide decahydrate
CAS14434-22-1
industrial chemical
ReferenceSame Category
2-Bromo-9,9-dimethyl-9,10-dihydroacridine
CAS1443680-94-1
chemical synthesis intermediate
Referencestereoisomer of
Potassium titanyl oxalate
CAS14481-26-6
pharmaceutical intermediate
Referencestereoisomer of
Iron(II) oxalate
CAS516-03-0
pigment for plastics and paints
Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H318Causes serious eye damage
H315Causes skin irritation
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects
H314Causes severe skin burns and eye damage
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for Oxalic acid (CAS 144-62-7) is 2917.11.
HS code (international, 6-digit)
2917.11
EU CN code (8-digit)
2917 11 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
oxalic acid
InChIKey
MUBZPKHOEPUJKR-UHFFFAOYSA-N
SMILES
C(=O)(C(=O)O)O
Synonyms (85)
- 48J
- OXD
- Ascorbic Acid EP Impurity E
- Calcium ascorbate dihydrate Impurity E [EP Impurity]
- Ribavirin Impurity U;Ascorbic Acid EP Impurity E;Sodium Ascorbate EP Impurity E;Oxaliplatin EP Impurity A
- USP Solution Oxalic Acid TS Conforms to USP
- 1o4n
- 1t5a
- 2-oxo-2-oxonioacetate
- 2dua
- 2hwg
- Acid, Oxalic
- Acide oxalique
- Acide oxalique [French]
- Acido ossalico
- Acido ossalico [Italian]
- Acidum oxalicum
- Aktisal
- Anhydrous oxalic acid
- Aquisal
- Caswell No. 625
- DeerClean
- Ethandisaeure
- Ethane-1,2-dioate
- Ethane-1,2-dioic acid
- Ethanedioic acid (9CI)
- Ethanedionate
- Ethanedionic acid
- H2ox
- Kyselina stavelova
- Kyselina stavelova [Czech]
- OXALIPLATIN IMPURITY A
- Oxaalzuur
- Oxaalzuur [Dutch]
- Oxagel
- Oxalate, Aluminum
- Oxalate, Chromium
- Oxalate, Diammonium
- Oxalate, Dilithium
- Oxalate, Dipotassium
- Oxalate, Disodium
- Oxalate, Ferric
- Oxalate, Iron
- Oxalate, Magnesium
- Oxalate, Monoammonium
- Oxalate, Monopotassium
- Oxalate, Monosodium
- Oxalate, Potassium
- Oxalate, Potassium Chromium
- Oxalate, Sodium
- Oxalic
- Oxalic Acid Dianion
- Oxalic acid (8CI)
- Oxalic acid (aqueous)
- Oxalic acid /Ethanedioic acid
- Oxalic acid alpha polymorph
- Oxalic acid diammonium salt
- Oxalic acid dihydrate ACS
- Oxalic acid, 99% (Standard)
- Oxalic acid, SAJ first grade
- Oxalic acid, anhydrous
- Oxalsaeure
- Oxalsaeure [German]
- Oxiric acid
- Ultraplast Activate S 52
- ethanedioic acid
- hydron;oxalate
- oxalic acid
- oxalic acid 2 hydrate
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