Thiophenol
- CAS Number
- 108-98-5
- HSN Code
- 29309099
- Molecular Formula
- C6H6S
- Catalogue Number
- AL4540
- Purity
- ≥ 98%
- Molecular Weight
- 110.18 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Thiophenol is a thiol in which the sulfanyl group is attached to a phenyl group.
Also known as Mercaptobenzene, Phenylthiol.
- Catalogue No.
- AL4540
- CAS Number
- 108-98-5
- Molecular Formula
- C6H6S
- Molecular Weight
- 110.18 g/mol
- HSN Code
- 29309099
- Grade
- 98%
- Product Form
- Substance
Thiophenol is a colorless to pale yellow liquid with a density of 1.073 g/mL. It has a boiling point of approximately 166 °C and a melting point of -8 °C. The compound is highly soluble in organic solvents such as ethanol and ether, but it has limited solubility in water. Its strong, disagreeable odor is characteristic of thiols, and it poses significant health risks if inhaled or ingested. The flash point of thiophenol is 60 °C, indicating its flammability, and it has a vapor pressure of 0.5 mmHg at 20 °C, which contributes to its volatility.
- Appearance
- Colorless to pale yellow liquid
- Shelf Life
- -
- Packaging
- Available in: 250 ml glass bottle, 500 ml glass bottle, 1 Lt glass bottle
- Storage
- Separated from strong oxidants, strong acids and food and feedstuffs.
1.1 — Product identifier
- Chemical Name
- Thiophenol
- Catalogue No.
- AL4540
- Product form
- Substance
- CAS Number
- 108-98-5
- EC Number
- 203-635-3
- Grade
- 98%
- EC Index Number
- 608-001-00-2
- Chemical Formula
- C6H6S
- HSN Code
- 29309099
- Synonyms
- Mercaptobenzene, Phenylthiol
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used as a synthetic intermediate and radical-chain-transfer reagent in organic synthesis.
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.1 — Classification of the substance or mixture
- Classification according to Regulation (EC) No 1272/2008
- Flam. Liq. 3; Acute Tox. 2; Acute Tox. 3; Skin Irrit. 2; Eye Dam. 1; Acute Tox. 1; Aquatic Acute 1; Aquatic Chronic 1
- Classification source
- ECHA C&L Inventory via PubChem CID 7969 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Flammable, Corrosive, Acute Toxic, Environmental Hazard
- Signal word
- Danger
- Hazard statements
- H226: Flammable liquid and vapor; H300: Fatal if swallowed; H311: Toxic in contact with skin; H315: Causes skin irritation; H318: Causes serious eye damage; H330: Fatal if inhaled; H400: Very toxic to aquatic life; H410: Very toxic to aquatic life with long lasting effects
2.3 — Other hazards
- Other hazards
- Highly toxic and flammable; may cause respiratory irritation and skin burns.
3.1 — Substance
- Name
- Thiophenol
- CAS No.
- 108-98-5
4.1 — Description of first aid measures
- First-aid measures after inhalation
- If this chemical has been inhaled, remove the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the person warm and at rest.
- First-aid measures after skin contact
- If this chemical contacts the skin, immediately wash the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing, wash the skin with soap and water, and get medical attention promptly.
- First-aid measures after eye contact
- If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.
- First-aid measures after ingestion
- If this chemical has been swallowed, get medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Symptoms of exposure may include headache, dizziness, nausea, vomiting, and respiratory distress.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- For small (incipient) fires, use media such as "alcohol" foam, dry chemical, or carbon dioxide. For large fires, apply water from as far as possible. Use very large quantities (flooding) of water applied as a mist or spray; solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Special hazards arising from the substance or mixture: Carbon oxides, sulphur oxides.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area and ventilate. Contain spill and prevent entry into waterways.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Personal protection: chemical protection suit including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Handle under a fume hood with appropriate PPE, including gloves and goggles. Avoid inhalation and skin contact.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Separated from strong oxidants, strong acids and food and feedstuffs.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if ventilation is inadequate.
9.1 — Information on basic physical and chemical properties
- Physical state
- Liquid
- Colour
- Colorless to pale yellow
- Odour
- Strong disagreeable odor
- Odour threshold
- Not specified
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- -8 °C
- Freezing point
- Not specified
- Boiling point
- 166 °C
- Flash point
- 60 °C
- Auto-ignition temperature
- Not specified
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Flammable liquid
- Vapour pressure
- 0.5 mmHg at 20 °C
- Relative vapour density at 20°C
- Not specified
- Density
- 1.073 g/mL
- Solubility
- Soluble in organic solvents, limited solubility in water
- Log Pow
- Not specified
- Viscosity, kinematic
- Not specified
- Viscosity, dynamic
- Not specified
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not specified
10.1 — Reactivity
- Reactivity
- Reacts with strong oxidizing agents and bases.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- Decomposes on burning. Decomposes on contact with acids. This produces toxic fumes of sulfur oxides.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizers, bases, and acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rat oral 46 mg/kg; LD50 Rat ip 10 mg/kg; LD50 Rat dermal 300 mg/kg
- Skin corrosion/irritation
- H315: Causes skin irritation
- Serious eye damage/irritation
- H318: Causes serious eye damage
- Respiratory or skin sensitisation
- Not classified (based on available data)
- Germ cell mutagenicity
- Not classified (based on available data)
- Carcinogenicity
- Not classified (based on available data)
- Specific target organ toxicity (single exposure)
- Not classified (based on available data)
- Specific target organ toxicity (repeated exposure)
- Not classified (based on available data)
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- UN 2337
- UN-No. (IMDG)
- UN 2337
- UN-No. (IATA)
- UN 2337
- UN-No. (ADN)
- UN 2337
- UN-No. (RID)
- UN 2337
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Thiophenol
- Proper Shipping Name (IMDG)
- Thiophenol
- Proper Shipping Name (IATA)
- Thiophenol
- Proper Shipping Name (ADN)
- Thiophenol
- Proper Shipping Name (RID)
- Thiophenol
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 6.1 (3)
14.4 — Packing group
- Packing group (ADR)
- I
- Packing group (IMDG)
- I
- Packing group (IATA)
- I
- Packing group (ADN)
- I
- Packing group (RID)
- I
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Thiophenol is widely used in organic synthesis as a nucleophilic thiol reagent, where it participates in various chemical reactions, including the synthesis of thiol derivatives and the formation of disulfides. It is also employed as a radical chain-transfer agent in polymer chemistry, facilitating the production of polymers with specific properties. Additionally, thiophenol finds applications in the manufacture of pharmaceuticals, agrochemicals, and specialty chemicals, where its reactivity is harnessed to create complex molecular structures. Its role in research laboratories is significant, particularly in studies involving thiol chemistry and radical mechanisms.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL02569
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 110.18 g/mol
| Test | Standard | Observed |
|---|---|---|
| Description | Clear yellow liquid | Clear yellow liquid |
| Assay (BY GC) | Min. 98.0% | 98.47% |
| Wt /ml at 20°C | 1.077 - 1.079g | 1.078g |
The above product complies with LR grade
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | -8 °C / 166 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in organic solvents |
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