Famphur

Also known as: Famophos, Famphos, Warbex, Dovip, American Cyanamid 38023, CL 38023, ENT 25,644, Famfur, Famofos, Fanfos, Warbexol, Phosphorothioic acid, O-[4-[(dimethylamino)sulfonyl]phenyl] O,O-dimethyl ester, O,O-Dimethyl O-[p-(dimethylsulfamoyl)phenyl] phosphorothioate, O-4-dimethylsulfamoylphenyl O,O-dimethyl phosphorothioate

Famphur (CAS 52-85-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H16NO5PS2 and a molecular weight of 325.341 g/mol. Key properties include a melting point of -96ºC, a boiling point of 394.2±52.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 192.2±30.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 52-85-7
Jingsj CID: J-39779-5
Molecular Formula: C₁₀H₁₆NO₅PS₂
Molecular Weight: 325.341 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-96ºC
Boiling Point	394.2±52.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	192.2±30.7 °C
Exact Mass	325.020752
PSA	115.35000
LogP	2.13
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.553

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation
H336 — May cause drowsiness or dizziness
H351 — Suspected of causing cancer
H373 — May cause damage to organs through prolonged exposure

Customs & Trade Information

HS Code	2935009019
Summary	2935009019 o-(4-(n,n-dimethylsulfamoyl)phenyl) o,o-dimethyl phosphorothioate。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:35.0%

Frequently Asked Questions

What is the CAS number of Famphur?

The CAS number of Famphur is 52-85-7.

What are the molecular formula and molecular weight of Famphur?

Famphur has molecular formula C10H16NO5PS2 and molecular weight 325.341 g/mol.

Is Famphur hazardous?

Famphur has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Famphur (CAS 52-85-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-39779-5 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.