2-Aminothiophenol
- CAS Number
- 137-07-5
- HSN Code
- 29309099
- Molecular Formula
- C6H7NS
- Catalogue Number
- AL0309
- Purity
- ≥ 98%
- Molecular Weight
- 125.19 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
2-aminothiophenol is an aryl thiol that is thiophenol substituted at position 2 by an amino group. It has a role as a plant metabolite.
Also known as o-Aminothiophenol.
- Catalogue No.
- AL0309
- CAS Number
- 137-07-5
- Molecular Formula
- C6H7NS
- Molecular Weight
- 125.19 g/mol
- HSN Code
- 29309099
- Grade
- 98%
- Product Form
- Substance
Pale yellow to amber liquid with a density of 1.17 g/mL and a characteristic thiol odor.
- Appearance
- Pale yellow to amber liquid
- Shelf Life
- -
- Packaging
- Available in: 100 ml glass bottle, 500 ml glass bottle with tin cap
- Storage
- Store in a cool, dry place away from incompatible materials.
1.1 — Product identifier
- Chemical Name
- 2-Aminothiophenol
- Catalogue No.
- AL0309
- Product form
- Substance
- CAS Number
- 137-07-5
- EC Number
- 205-277-3
- Grade
- 98%
- EC Index Number
- Not specified
- Chemical Formula
- C6H7NS
- HSN Code
- 29309099
- Synonyms
- o-Aminothiophenol
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Building block for organic synthesis, particularly in pharmaceuticals and dyes.
- 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
- Acute Tox. 4; Skin Corr. 1B; Eye Dam. 1; Aquatic Acute 1
- Classification source
- Sigma-Aldrich (Merck) SDS 274240 - supplier classification, CAS verified
2.2 — Label elements
- Hazard pictograms
- Corrosive, Irritant, Environmental Hazard
- Signal word
- Danger
- Hazard statements
- H302: Harmful if swallowed; H314: Causes severe skin burns and eye damage; H400: Very toxic to aquatic life
- Precautionary statements
- P273, P280, P301+P312, P303+P361+P353, P304+P340+P310, P305+P351+P338
2.3 — Other hazards
- Other hazards
- Corrosive and toxic; may cause skin and eye burns.
3.1 — Substance
- Name
- 2-Aminothiophenol
- CAS No.
- 137-07-5
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If breathing is difficult, give oxygen. Seek medical attention.
- First-aid measures after skin contact
- Wash with soap and water. Remove contaminated clothing. Seek medical attention if irritation persists.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Seek medical attention.
- First-aid measures after ingestion
- Do not induce vomiting. Rinse mouth and seek medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Corrosive effects on skin and eyes, respiratory irritation, headache, nausea.
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
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- May emit toxic fumes under fire conditions. Use water spray to cool containers.
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. Wear appropriate protective equipment. Contain and collect spillage.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Absorb with inert material and dispose of in accordance with local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Handle in a fume hood. Use gloves and protective eyewear. Avoid contact with skin and eyes.
- 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
- Store in a cool, dry place, away from incompatible materials such as strong oxidizers.
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
- Pale yellow to amber
- Odour
- Characteristic thiol odor
- Odour threshold
- Not specified
- pH value
- Not specified
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- -2 °C
- Freezing point
- Not specified
- Boiling point
- 210 °C
- Flash point
- Not specified
- Auto-ignition temperature
- Not specified
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- 0.1 mmHg at 25 °C
- Relative vapour density at 20°C
- Not specified
- Density
- 1.17 g/mL
- Solubility
- Soluble in water and organic solvents
- 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
- Stable under normal conditions, but may react with strong oxidizing agents.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- No dangerous reactions known under normal conditions of use.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizing agents, strong acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Toxic if swallowed, inhaled, or absorbed through skin.
- Skin corrosion/irritation
- H314: Causes severe skin burns and eye damage
- 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 1760
- UN-No. (IMDG)
- UN 1760
- UN-No. (IATA)
- UN 1760
- UN-No. (ADN)
- UN 1760
- UN-No. (RID)
- UN 1760
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- CORROSIVE LIQUID, N.O.S. (2-aminothiophenol)
- Proper Shipping Name (IMDG)
- CORROSIVE LIQUID, N.O.S. (2-aminothiophenol)
- Proper Shipping Name (IATA)
- Corrosive liquid, n.o.s. (2-aminothiophenol)
- Proper Shipping Name (ADN)
- CORROSIVE LIQUID, N.O.S. (2-aminothiophenol)
- Proper Shipping Name (RID)
- CORROSIVE LIQUID, N.O.S. (2-aminothiophenol)
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 8
14.4 — Packing group
- Packing group (ADR)
- II
- Packing group (IMDG)
- II
- Packing group (IATA)
- II
- Packing group (ADN)
- II
- Packing group (RID)
- II
14.5 — Environmental hazards
- Dangerous for the environment
- Yes
- Marine pollutant
- Yes
- 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
Used as a key building block for benzothiazole-based pharmaceutical and dye synthesis.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL01750
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 125.19 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 99.5% |
| Moisture | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.1% | 0.05% |
| Related Substances | None detected | None detected |
| Solubility | Soluble in water and organic solvents | Soluble in both |
The above product is expected to comply with 98% grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | Boiling point: 210 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in water and organic solvents |
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