Methanesulfonic Acid
- CAS Number
- 75-75-2
- HSN Code
- 29041090
- Molecular Formula
- CH4O3S
- Catalogue Number
- AL2975
- Purity
- ≥ 98%
- Molecular Weight
- 96.11 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Methanesulfonic acid is an alkanesulfonic acid in which the alkyl group directly linked to the sulfo functionality is methyl. It has a role as an Escherichia coli metabolite.
Also known as MSA, Methanesulfonic acid.
- Catalogue No.
- AL2975
- CAS Number
- 75-75-2
- Molecular Formula
- CH4O3S
- Molecular Weight
- 96.11 g/mol
- HSN Code
- 29041090
- Grade
- 98% For Synthesis
- Product Form
- Substance
Melting point: 20 °C; Boiling point: 167 °C at 10 mm Hg; Flash point: 189 °C closed cup; Density: 1.4812 g/cu cm at 18 °C.
- Appearance
- Solid
- Shelf Life
- -
- Packaging
- Available in: 500 ml glass bottle with tin cap, 1 Lt glass bottle with tin cap, 2.5 Lt glass bottle with tin cap
- Storage
- Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
1.1 — Product identifier
- Chemical Name
- Methanesulfonic Acid
- Catalogue No.
- AL2975
- Product form
- Substance
- CAS Number
- 75-75-2
- EC Number
- 200-898-6
- Grade
- 98% For Synthesis
- EC Index Number
- 75100
- Chemical Formula
- CH4O3S
- HSN Code
- 29041090
- Synonyms
- MSA, Methanesulfonic acid
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used as a catalyst and 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
- Acute Tox. 4; Skin Corr. 1B; Eye Dam. 1
- Classification source
- ECHA C&L Inventory via PubChem CID 6395 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Corrosive, Irritant
- Signal word
- Danger
- Hazard statements
- H302: Harmful if swallowed; H312: Harmful in contact with skin; H314: Causes severe skin burns and eye damage; H318: Causes serious eye damage
2.3 — Other hazards
- Other hazards
- Corrosive to metals.
3.1 — Substance
- Name
- Methanesulfonic Acid
- CAS No.
- 75-75-2
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- Wash with plenty of soap and water. Seek medical attention if irritation develops.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing and seek medical attention.
- First-aid measures after ingestion
- Rinse mouth. Do NOT induce vomiting. Seek medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Corrosive effects may include irritation, burns, 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
- Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Non-flammable, but may produce toxic fumes in a fire.
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
- Contain spill and absorb with inert material. Dispose of in accordance with local regulations.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Use appropriate protective equipment. Neutralize with a suitable base before disposal.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Use gloves and eye protection. 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 cool place. Keep container tightly closed in a dry and well-ventilated place.
8.2 — Exposure controls
- Hand protection
- The selected protective gloves have to satisfy the specifications of EU Directive 89686EEC and the Standard EN 374 derived from it. Handle with gloves.
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multipurpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls.
9.1 — Information on basic physical and chemical properties
- Physical state
- Liquid
- Colour
- Colorless to pale yellow
- Odour
- Slightly pungent
- Odour threshold
- Not specified
- pH value
- <1 (1% solution)
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- 20 °C
- Freezing point
- Not specified
- Boiling point
- 167 °C at 10 mm Hg
- Flash point
- 189 °C closed cup
- Auto-ignition temperature
- > 500 °C at 1013 mm Hg
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- 4.28X10-4 mm Hg at 25 °C
- Relative vapour density at 20°C
- Not specified
- Density
- 1.4812 g/cu cm at 18 °C
- Solubility
- Miscible with 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 applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions, but reacts with strong bases and oxidizing agents.
10.2 — Chemical stability
- Chemical stability
- Thermally stable at moderately elevated temperatures.
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 bases, oxidizing agents, and metals.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Hazardous decomposition products formed under fire conditions: Carbon oxides, Sulfur oxides.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rat oral 200-400 mg/kg; LD50 Mouse oral 6200 mg/kg (neutralized 70% Methanesulfonic acid); LC50 Rat inhalation 330 ppm for 6 hr
- 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 3265
- UN-No. (IMDG)
- UN 3265
- UN-No. (IATA)
- UN 3265
- UN-No. (ADN)
- UN 3265
- UN-No. (RID)
- UN 3265
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Methanesulfonic Acid
- Proper Shipping Name (IMDG)
- Methanesulfonic Acid
- Proper Shipping Name (IATA)
- Methanesulfonic Acid
- Proper Shipping Name (ADN)
- Methanesulfonic Acid
- Proper Shipping Name (RID)
- Methanesulfonic Acid
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
- 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
Methanesulfonic acid is primarily used as an acid catalyst in esterification, alkylation, and polymer synthesis. Its non-oxidizing nature makes it suitable for various organic synthesis applications.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL02436
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 96.11 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 99.5% |
| Density | 1.481 g/mL | 1.480 g/mL |
| pH value | <1 (1% solution) | 0.5 |
| Moisture | ≤ 1% | 0.5% |
| Residue on Ignition | ≤ 0.1% | 0.05% |
| Related Substances | None detected | None detected |
The above product is expected to comply with 98% For Synthesis grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% For Synthesis | ≥ 98% | m.p. 20 °C; b.p. 167 °C at 10 mm Hg | ≤ 1% | ≤ 0.1% | None detected | Miscible with water |
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