1,3-di(o-tolyl)thiourea

Also known as: 1,3-Di-o-tolyl-2-thiourea, 1,3-Di-o-tolylthiourea, N,N'-Di-o-tolylthiourea, N,N'-Di(2-tolyl)thiourea, Di-o-tolylthiourea, DOTT, DTTU, Accelerator A22, Carbanilide, 2,2'-dimethylthio-, Carbanilide, o,o'-dimethylthio-, MFCD00025922, USAFEK-1651

1,3-di(o-tolyl)thiourea (CAS 137-97-3) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C15H16N2S and a molecular weight of 256.36600 g/mol. Key properties include a melting point of 157-159 °C(lit.), a boiling point of 367.5ºC at 760mmHg, a density of 1.219g/cm3 and a flash point of 176ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 137-97-3
Jingsj CID: J-1359494-5
Molecular Formula: C₁₅H₁₆N₂S
Molecular Weight: 256.36600 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	157-159 °C(lit.)
Boiling Point	367.5ºC at 760mmHg
Density	1.219g/cm3
Flash Point	176ºC
Exact Mass	256.10300
PSA	56.15000
LogP	4.25830
Vapor Pressure	1.36E-05mmHg at 25°C
Refractive Index	1.707

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,3-di(o-tolyl)thiourea?

The CAS number of 1,3-di(o-tolyl)thiourea is 137-97-3.

What are the molecular formula and molecular weight of 1,3-di(o-tolyl)thiourea?

1,3-di(o-tolyl)thiourea has molecular formula C15H16N2S and molecular weight 256.36600 g/mol.

What are the upstream and downstream products of 1,3-di(o-tolyl)thiourea?

For 1,3-di(o-tolyl)thiourea, Upstream Products: Carbon disulphide, o-Toluidine, Sodium trithiocarbonate; Downstream Products: o-Toluidine, N-Methyl-o-toluidine, 2-Methylbenzonitrile.

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. "1,3-di(o-tolyl)thiourea (CAS 137-97-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359494-5 (accessed 2026-11-06).

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