Tetramethylammonium hydroxide solution
- CAS Number
- -
- HSN Code
- 38229090
- Molecular Formula
- (CH3)4N(OH)
- Catalogue Number
- AL2572H
- Purity
- 25%
- Molecular Weight
- 91.15 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Tetramethylammonium hydroxide solution 25% in methanol is a concentrated methanol-based preparation designed for demanding synthesis applications. This solution serves as a strong base and is particularly useful in non-aqueous organic synthesis. The compound is notable for its ability to facilitate various chemical reactions, making it a valuable reagent in both academic and industrial laboratories. Its high purity and concentration allow for precise control in chemical processes, enhancing the efficiency of synthetic pathways.
Also known as Tetramethylammonium hydroxide, TMAH.
- Catalogue No.
- AL2572H
- CAS Number
- -
- Molecular Formula
- (CH3)4N(OH)
- Molecular Weight
- 91.15 g/mol
- HSN Code
- 38229090
- Grade
- 25% solution in methanol
- Product Form
- Mixture
The product appears as a clear, colorless liquid, indicative of its high purity. It has a density of approximately 0.79 g/cm³ at 20°C, which is typical for methanol solutions. The boiling point of the solution is around 64.7°C, while the melting point is not applicable due to its liquid state. Tetramethylammonium hydroxide is highly soluble in water and methanol, making it versatile for various applications. The solution is also flammable, with a flash point of 11°C, necessitating careful handling and storage.
- Appearance
- -
- Shelf Life
- -
- Packaging
- -
- Storage
- -
1.1 — Product identifier
- Chemical Name
- Tetramethylammonium hydroxide solution
- Catalogue No.
- AL2572H
- Product form
- Mixture
- CAS Number
- Not applicable
- EC Number
- 200-898-2
- Grade
- 25% solution in methanol
- EC Index Number
- Not applicable
- Chemical Formula
- (CH3)4N(OH)
- HSN Code
- 38229090
- Synonyms
- Tetramethylammonium hydroxide, TMAH
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used as a strong base catalyst 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
2.3 — Other hazards
- Other hazards
- Corrosive to metals; may cause severe skin burns and eye damage.
3.1 — Substance
- Name
- Tetramethylammonium hydroxide solution
- CAS No.
- Not applicable
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Remove to fresh air. If breathing is difficult, give oxygen. Seek medical attention immediately.
- First-aid measures after skin contact
- Wash with plenty of 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. Continue rinsing. Seek medical attention immediately.
- First-aid measures after ingestion
- Do not induce vomiting. Rinse mouth. Seek medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Burning sensation, coughing, shortness of breath, redness, and pain in affected areas.
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
- Flammable liquid; 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
- Evacuate area. 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 dilute acid and absorb with inert material.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Use in a fume hood with appropriate PPE including gloves, goggles, and lab coat.
- 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, well-ventilated area away from incompatible materials.
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
- Odour
- Characteristic methanol odor
- Odour threshold
- Not applicable
- pH value
- >13 (highly alkaline)
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- Not applicable
- Freezing point
- Not applicable
- Boiling point
- 64.7°C
- Flash point
- 11°C
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not applicable
- Flammability (solid, gas)
- Flammable liquid
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- 0.79 g/cm³
- Solubility
- Soluble in water and methanol
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not applicable
- Oxidising properties
- Not applicable
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Reacts violently with strong acids and 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 acids, strong oxidizers, and moisture.
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
- Causes severe skin burns.
- Serious eye damage/irritation
- Causes serious eye damage.
- Respiratory or skin sensitisation
- Not a skin sensitizer.
- Germ cell mutagenicity
- Not classified
- Carcinogenicity
- Not classified
- Specific target organ toxicity (single exposure)
- May cause respiratory irritation.
- Specific target organ toxicity (repeated exposure)
- Not classified
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 3267
- UN-No. (IMDG)
- UN 3267
- UN-No. (IATA)
- UN 3267
- UN-No. (ADN)
- UN 3267
- UN-No. (RID)
- UN 3267
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Tetramethylammonium hydroxide solution
- Proper Shipping Name (IMDG)
- Tetramethylammonium hydroxide solution
- Proper Shipping Name (IATA)
- Tetramethylammonium hydroxide solution
- Proper Shipping Name (ADN)
- Tetramethylammonium hydroxide solution
- Proper Shipping Name (RID)
- Tetramethylammonium hydroxide solution
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
Tetramethylammonium hydroxide solution is primarily used as a concentrated strong base catalyst in non-aqueous organic synthesis research. It is employed in the synthesis of various organic compounds, including pharmaceuticals and agrochemicals. The solution is also utilized in polymer chemistry for the preparation of cationic polymers and in electrochemistry for the development of advanced materials. Its role as a catalyst in reactions such as alkylation and acylation further underscores its importance in synthetic organic chemistry.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL2572H
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 91.15 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | 25% | 25.2% |
| pH | >13 | >13.5 |
| Density | 0.79 g/cm³ | 0.78 g/cm³ |
| Moisture Content | <1% | 0.5% |
| Residue on Ignition | <0.1% | 0.05% |
| Related Substances | None detected | None detected |
The above product is expected to comply with 25% solution in methanol grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 25% solution in methanol | 25% | 64.7°C | <1% | <0.1% | None detected | Completely soluble in water and methanol |
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