3,4-Dihydroxybenzonitrile
Also known as: 4-Cyanocatechol, 4-Cyanopyrocatechol, Protocatechuonitrile, Benzonitrile, 3,4-dihydroxy-, 4-Cyano-1,2-dihydroxybenzene
3,4-Dihydroxybenzonitrile (CAS 17345-61-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H5NO2 and a molecular weight of 135.120 g/mol. Key properties include a melting point of 155-159 °C(lit.), a boiling point of 334.8±32.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 156.3±25.1 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 17345-61-8
- Jingsj CID
- J-48049-9
- Molecular Formula
- C7H5NO2
- Molecular Weight
- 135.120 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 155-159 °C(lit.) |
|---|---|
| Boiling Point | 334.8±32.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 156.3±25.1 °C |
| Exact Mass | 135.032028 |
| PSA | 64.25000 |
| LogP | 1.78 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.648 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
Customs & Trade Information
| HS Code | 2926909090 |
|---|---|
| Summary | HS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3,4-Dihydroxybenzonitrile?
The CAS number of 3,4-Dihydroxybenzonitrile is 17345-61-8.
What are the molecular formula and molecular weight of 3,4-Dihydroxybenzonitrile?
3,4-Dihydroxybenzonitrile has molecular formula C7H5NO2 and molecular weight 135.120 g/mol.
Is 3,4-Dihydroxybenzonitrile hazardous?
3,4-Dihydroxybenzonitrile has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of 3,4-Dihydroxybenzonitrile?
For 3,4-Dihydroxybenzonitrile, Upstream Products: 4-Hydroxy-3-methoxybenzonitrile, 4-(Hydroxymethyl)catechol, 3,4-Dimethoxybenzonitrile; Downstream Products: 3,4-Dihydroxybenzamide, Maclurin, 2,2-difluoro-1,3-benzodioxole-5-carbonitrile.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Dihydroxybenzonitrile (CAS 17345-61-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48049-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.