4-(1-Naphthyl)-3-thiosemicarbazide

Also known as: 1-amino-3-naphthalen-1-yl-thiourea, 1-amino-3-(1-naphthalenyl)thiourea, N-(1-naphthyl)hydrazinecarbothioamide, N-naphthalen-1-ylhydrazinecarbothioamide, 4-(1-Naphtyl)thiosemicarbazide, Hydrazinecarbothioamide, N-1-naphthalenyl-

4-(1-Naphthyl)-3-thiosemicarbazide (CAS 42135-78-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H11N3S and a molecular weight of 217.29000 g/mol. Key properties include a melting point of 139-141ºC (dec.), a boiling point of 394.4ºC at 760 mmHg, a density of 1.353g/cm3 and a flash point of 192.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 42135-78-4
Jingsj CID: J-1439736-5
Molecular Formula: C₁₁H₁₁N₃S
Molecular Weight: 217.29000 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	139-141ºC (dec.)
Boiling Point	394.4ºC at 760 mmHg
Density	1.353g/cm3
Flash Point	192.3ºC
Exact Mass	217.06700
PSA	82.17000
LogP	3.16410
Refractive Index	1.792

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 4-(1-Naphthyl)-3-thiosemicarbazide?

The CAS number of 4-(1-Naphthyl)-3-thiosemicarbazide is 42135-78-4.

What are the molecular formula and molecular weight of 4-(1-Naphthyl)-3-thiosemicarbazide?

4-(1-Naphthyl)-3-thiosemicarbazide has molecular formula C11H11N3S and molecular weight 217.29000 g/mol.

What are the upstream and downstream products of 4-(1-Naphthyl)-3-thiosemicarbazide?

For 4-(1-Naphthyl)-3-thiosemicarbazide, Upstream Products: 1-naphthyl isothiocyanate, 1-Naphthylamine, Carbon disulphide; Downstream Products: 1-(naphthalen-1-yl)-1H-tetrazole-5-thiol.

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. "4-(1-Naphthyl)-3-thiosemicarbazide (CAS 42135-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1439736-5 (accessed 2026-11-09).

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