C14H18Cl2N2O2
317.2 g/mol
Dye & PigmentDanger
3,3'-DIMETHOXYBENZIDINE DIHYDROCHLORIDE
CAS20325-40-0EC243-737-5
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Pigment intermediate
3,3'-Dimethoxybenzidine dihydrochloride is a chemical compound used as a pigment intermediate. The National Toxicology Program has identified it as a substance that can cause cancer.
Pigment intermediatePigment manufacturing
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:California Proposition 65
CAS 20325-40-0
Related Compounds
StrongSame Parent
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Safety Reference
Danger
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H350May cause cancer
Customs Tariff Classification
The international HS code for 3,3'-DIMETHOXYBENZIDINE DIHYDROCHLORIDE (CAS 20325-40-0) is 2922.29.
HS code (international, 6-digit)
2922.29
EU CN code (8-digit)
2922 29 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
4-(4-amino-3-methoxyphenyl)-2-methoxyaniline;dihydrochloride
InChIKey
UXTIAFYTYOEQHV-UHFFFAOYSA-N
SMILES
COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N)OC)N.Cl.Cl
Synonyms (28)
- 2-Dianisidine dihydrochloride
- 3,3'-Dimethoxybenzidine DiHCl
- 3,3'-Dimethoxybenzidine.2HCl
- Fast Blue B.2HCl
- dianisidine dihydrochloride
- o-Dianisidine (hydrochloride)
- o-Dianisidine HCl
- o-Dianisidine dihydrochloride