1-Butanethiol, 99%

Name: 1-Butanethiol, 99%
Brand: Vaqora Chemicals
SKU: VQ-010744

About 1-Butanethiol, 99%

Listed under CAS 109-79-5, 1-Butanethiol is an organosulfur compound available from Vaqora Chemicals at a purity of 99%. Formula C4H10S, molecular weight 90.19 g/mol. Systematically, it is named butane-1-thiol. Common synonyms include Butyl mercaptan and Mercaptan C4.

The material typically appears as a colourless liquid. Key physical data: a melting point of −116 °C and a boiling point of 98 °C. Keep containers tightly closed in a cool, well-ventilated area away from heat and ignition sources. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include organic synthesis and API synthesis. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 1-Butanethiol in 250 mL and 1 L packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	1-Butanethiol, 99%
Catalogue No.	VQ-010744
CAS Number	109-79-5
IUPAC name	butane-1-thiol
Molecular formula	C₄H₁₀S
Molecular weight	90.19 g/mol
Exact mass	90.0503
Purity / assay	99%
HSN code	29309019
InChIKey	WQAQPCDUOCURKW-UHFFFAOYSA-N
SMILES	CCCCS
PubChem CID	8012

Physical properties
Physical form	Liquid
Appearance	Colourless liquid
Melting point	−116 °C
Boiling point	98 °C
Density	0.842 g/mL at 25 °C
LogP (XLogP3)	2.3
H-bond donors / acceptors	1 / 1
TPSA	1 Å²
UN number	UN 2347
Synonyms	Butyl mercaptan, Mercaptan C4, Butanethiol, n-Butyl mercaptan, Thiobutyl alcohol, Butylthiol, 1-Mercaptobutane, 1-Butyl mercaptan, n-Butyl thioalcohol, Bear skunk, Normal butyl thioalcohol, n-Butanethiol

Safety & hazard information (GHS)

Flammable

Harmful / irritant

Signal word: Danger

Hazard statements

H225Highly flammable liquid and vapor
H302Harmful if swallowed
H319Causes serious eye irritation
H332Harmful if inhaled

Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P317, P330, P337 + P317, P370 + P378, P403 + P235, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 1-Butanethiol, 99%?

The CAS Registry Number of 1-Butanethiol, 99% is 109-79-5. It is also known as Butyl mercaptan, Mercaptan C4, Butanethiol.

What is the molecular formula and molecular weight of 1-Butanethiol, 99%?

1-Butanethiol, 99% has the molecular formula C4H10S and a molecular weight of 90.19 g/mol. Its IUPAC name is butane-1-thiol.

Which grade and pack sizes of 1-Butanethiol, 99% can I order?

We supply 1-Butanethiol, 99% in (99%) grade, in 250 mL, 1 L packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Butanethiol, 99%?

Yes. Every lot of 1-Butanethiol, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 1-Butanethiol, 99% be shipped internationally?

Yes. 1-Butanethiol, 99% is classified as hazardous (UN 2347), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.