3,3'-Dimethoxybenzidine dihydrochloride
Also known as: o-Dianisidine dihydrochloride, Fast Blue B, 3,3'-Dimethoxy-4,4'-biphenyldiamine dihydrochloride, 3,3'-Dimethoxybenzidine hydrochloride, O-Dianisidine dihydrochloride, 3,3'-Dimethoxy-[1,1'-biphenyl]-4,4'-diamine dihydrochloride
3,3'-Dimethoxybenzidine dihydrochloride (CAS 20325-40-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H18Cl2N2O2 and a molecular weight of 280.75 g/mol. Key properties include a melting point of 268 °C, a boiling point of 391.3ºC at 760 mmHg and a flash point of 206℃. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H350 — May cause cancer. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 20325-40-0
- Jingsj CID
- J-38331-3
- Molecular Formula
- C14H18Cl2N2O2
- Molecular Weight
- 280.75 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 268 °C |
|---|---|
| Boiling Point | 391.3ºC at 760 mmHg |
| Flash Point | 206℃ |
| Exact Mass | 316.074524 |
| PSA | 70.50000 |
| LogP | 5.30160 |
| Additional Property | 1-5 g/100 mL at 20 ºC |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H350 — May cause cancer
Activity & Biological Data
| Additional Information | [1]. Iskra M et al. Copper and zinc concentrations and the activities of ceruloplasmin and superoxide dismutase inatherosclerosis obliterans. Biol Trace Elem Res. 2000 Jan;73(1):55-65. [2]. Dungchai W et al. Use of multiple colorimetric indicators for paper-based microfluidic devices. Anal Chim Acta. 2010 Aug 3;674(2):227-33. |
|---|
Customs & Trade Information
| HS Code | 2923900090 |
|---|---|
| Summary | 2923900090 other quaternary ammonium salts and hydroxides。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3,3'-Dimethoxybenzidine dihydrochloride?
The CAS number of 3,3'-Dimethoxybenzidine dihydrochloride is 20325-40-0.
What are the molecular formula and molecular weight of 3,3'-Dimethoxybenzidine dihydrochloride?
3,3'-Dimethoxybenzidine dihydrochloride has molecular formula C14H18Cl2N2O2 and molecular weight 280.75 g/mol.
Is 3,3'-Dimethoxybenzidine dihydrochloride hazardous?
3,3'-Dimethoxybenzidine dihydrochloride has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H350 — May cause cancer.
What are the upstream and downstream products of 3,3'-Dimethoxybenzidine dihydrochloride?
For 3,3'-Dimethoxybenzidine dihydrochloride, Downstream Products: 3,3'-Dimethoxy-4,4'-biphenylene diisocyanate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,3'-Dimethoxybenzidine dihydrochloride (CAS 20325-40-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38331-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.