Ethanethiol CAS No. 75-08-1

Ethanethiol (Ethyl Mercaptan) 

CAS No.: 75-08-1 | EC No.: 200-837-3

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1. Chemical Identification

Property	Specification
IUPAC Name	Ethane-1-thiol
Molecular Formula	C₂H₅SH
Molecular Weight	62.13 g/mol
Appearance	Colorless liquid
Density	0.839 g/mL at 25°C
Melting Point	-148°C
Boiling Point	35°C
Refractive Index	n<sup>20</sup><sub>D</sub> 1.4306
Flash Point	-45°C (closed cup)
Odor Threshold	0.00019 mg/L (0.5 ppb)

Synonyms:
Ethyl mercaptan, Ethyl sulfhydrate, Mercaptoethane

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2. Key Applications

Pesticide Industry

Organophosphate Production:
✓ Isopropyl phosphate
✓ Phorate
✓ Demeton (Internally absorbed phosphorus)Antibacterial Agent 401 synthesis

Gas Industry

Odorant/Warning Agent:
✓ Natural gas leak detection
✓ LPG/propane additive
✓ Jet fuel odorization

Pharmaceutical Synthesis

Building block for sulfur-containing drug molecules

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3. Product Advantages

✔ Ultra-Sensitive Odor – Reliable leak detection at 0.5 ppb
✔ High Reactivity – Effective thiolating agent
✔ Broad Utility – From agrochemicals to fuel safety

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4. Physical & Chemical Properties

Vapor Pressure: 442 mmHg at 20°CSolubility:Slightly soluble in water (6.76 g/L)Miscible with alcohol/etherAutoignition Temp.: 299°C

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5. Handling & Storage

Parameter	Requirement
Storage Temp	-20°C to 10°C (refrigerated)
Packaging	150kg stainless steel cylinders
Shelf Life	6 months under N₂ atmosphere
Special Notes	Explosion-proof area required

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6. Safety Information

Danger!

H220: Extremely flammable gasH315+H319: Causes skin/eye irritationH335: May cause respiratory irritation

Protective Measures:

P210: Keep away from heat/sparks/open flamesP377: Leaking gas fire – do not extinguishP403+P233: Store in well-ventilated place

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7. Quality Specifications

Purity: ≥98% (GC)Sulfur Content: 51-53%Water Content: ≤0.05%

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Disclaimer:
This information is for qualified professionals only. Requires explosion-proof equipment and proper gas detection systems. Compliance with local regulations for volatile sulfur compounds is mandatory.

Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.