CrO3
99.994 g/mol
OtherDanger
Chromium trioxide
CAS1333-82-0EC215-607-8
Category
Other
Compound Class
n.a
Primary Use
Industrial oxidizing agent and plating compound
Chromium trioxide is an inorganic compound that appears as a dark red-orange solid and is used in various industrial processes. It functions as a strong oxidizing agent and is primarily applied in metal finishing and chemical manufacturing.
ElectroplatingWood preservationAluminum production
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.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:EU REACH Authorisation List
CAS 1333-82-0
Related Compounds
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research reagent
ReferenceSame Category
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CAS133359-80-5
Research compound
ReferenceSame Category
2-Chloro-3-amino-4-methyl pyridine
CAS133627-45-9
research compound
ReferenceSame Category
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CAS1336454-90-0
pharmaceutical intermediate
Safety Reference
Danger
H271May cause fire or explosion; strong oxidizer
H301Toxic if swallowed
H310Fatal in contact with skin
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H330Fatal if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H340May cause genetic defects
H350May cause cancer
H361Suspected of damaging fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H290May be corrosive to metals
H312Harmful in contact with skin
H335May cause respiratory irritation
H272May intensify fire; oxidizer
H360May damage fertility or the unborn child
H370Causes damage to organs
H341Suspected of causing genetic defects
Customs Tariff Classification
The international HS code for Chromium trioxide (CAS 1333-82-0) is 2819.10.
HS code (international, 6-digit)
2819.10
EU CN code (8-digit)
2819 10 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
trioxochromium
InChIKey
WGLPBDUCMAPZCE-UHFFFAOYSA-N
SMILES
O=[Cr](=O)=O
Synonyms (49)
- (CrO3)
- Anhydride chromique
- Anidride cromica
- Anidride cromica [Italian]
- CHROMIC TRIOXIDE
- CHROMICUM ACIDUM(CHROMIUM)
- Chrom(VI)-oxid
- Chrome (trioxyde de)
- Chrome (trioxyde de) [French]
- Chrome oxide green GN-m
- Chromia (CrO3)
- Chromic anhydride
- Chromium anhydride
- Chromium oxide (Cr4O12)
- Chromium oxide (CrO3)
- Chromium trioxide
- Chromium trioxide, anhydrous
- Chromium trioxide, sintered
- Chromium(6+) oxide
- Chromium(6+) trioxide
- Chromium(VI) oxide
- Chromium(VI) oxide, CP
- Chromium(VI) oxide, p.a.
- Chromium(VI) trioxide
- Chromsaeureanhydrid
- Chromsaeureanhydrid [German]
- Chromtrioxid
- Chromtrioxid [German]
- Chroomtrioxyde
- Chroomtrioxyde [Dutch]
- Chroomzuuranhydride
- Chroomzuuranhydride [Dutch]
- Chrormic trioxide
- Cromo(triossido di)
- Cromo(triossido di) [Italian]
- Monochromium oxide
- Monochromium trioxide
- Puratronic chromium trioxide
- Red oxide of chromium
- Sintered chromium trioxide
- Tris(oxido)chromium
- trioxochromium
- trioxyde de chrome