p-Toluenesulfonic acid monohydrate
- CAS Number
- 6192-52-5
- HSN Code
- 29041090
- Molecular Formula
- C7H8O3S·H2O
- Catalogue Number
- AL1529A
- Purity
- 98.5% min
- Molecular Weight
- 190.22 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
p-Toluenesulfonic acid monohydrate is a white crystalline solid that serves as a strong acid and is widely used in organic synthesis and catalysis. This AR-grade product is characterized by its high purity of 98.5%, making it suitable for precise analytical applications. The compound is a sulfonic acid derivative of toluene, which enhances its reactivity in various chemical reactions. Its monohydrate form indicates the presence of one water molecule per molecule of p-toluenesulfonic acid, which is important for its solubility and reactivity in aqueous solutions.
Also known as p-Toluenesulfonic acid, p-TSA, p-Toluenesulfonic acid monohydrate.
- Catalogue No.
- AL1529A
- CAS Number
- 6192-52-5
- Molecular Formula
- C7H8O3S·H2O
- Molecular Weight
- 190.22 g/mol
- HSN Code
- 29041090
- Grade
- AR (Analytical Reagent)
- Product Form
- Substance
p-Toluenesulfonic acid monohydrate appears as a white crystalline powder. It has a melting point of approximately 105-110 °C and is highly soluble in water, allowing for easy incorporation into various aqueous reactions. The compound has a density of about 1.2 g/cm³ and exhibits a strong acidic odor. Its boiling point is around 250 °C, and it has a pH value of less than 1 in solution, indicating its strong acidic nature.
- Appearance
- White crystalline powder
- Shelf Life
- 2 years
- Packaging
- Available in 100g and 500g glass bottles
- Storage
- Store in a cool, dry place, away from incompatible materials.
1.1 — Product identifier
- Chemical Name
- p-Toluenesulfonic acid monohydrate
- Catalogue No.
- AL1529A
- Product form
- Substance
- CAS Number
- 6192-52-5
- EC Number
- 228-200-0
- Grade
- AR
- EC Index Number
- -
- Chemical Formula
- C7H8O3S·H2O
- HSN Code
- 29041090
- Synonyms
- p-Toluenesulfonic acid, p-TSA, p-Toluenesulfonic acid monohydrate
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used as an acid catalyst in organic synthesis and analytical chemistry.
- 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 skin burns and eye damage.
3.1 — Substance
- Name
- p-Toluenesulfonic acid monohydrate
- CAS No.
- 6192-52-5
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 skin thoroughly with 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. 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
- Burning sensation, redness, and pain on contact with skin or eyes; respiratory irritation if inhaled.
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
- 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
- Wear appropriate protective equipment. Avoid contact with skin and eyes.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Use personal protective equipment as required. Avoid contact with skin and eyes. Ensure adequate ventilation.
- 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, in a tightly closed container. Keep away from incompatible materials such as strong bases and oxidizing agents.
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
- Solid
- Colour
- White
- Odour
- Strong acidic
- Odour threshold
- Not determined
- pH value
- <1 (in solution)
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 105-110 °C
- Freezing point
- Not applicable
- Boiling point
- 250 °C
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not determined
- Flammability (solid, gas)
- Not flammable
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- 1.2 g/cm³
- Solubility
- Soluble in water
- Log Pow
- Not determined
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions. Reacts with strong bases 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 bases, oxidizing agents, and metals.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Not classified as acutely toxic; however, may cause burns.
- 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)
- Not classified as a specific target organ toxicant.
- 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)
- 2585
- UN-No. (IMDG)
- 2585
- UN-No. (IATA)
- 2585
- UN-No. (ADN)
- 2585
- UN-No. (RID)
- 2585
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- p-Toluenesulfonic acid, solid
- Proper Shipping Name (IMDG)
- p-Toluenesulfonic acid, solid
- Proper Shipping Name (IATA)
- p-Toluenesulfonic acid, solid
- Proper Shipping Name (ADN)
- p-Toluenesulfonic acid, solid
- Proper Shipping Name (RID)
- p-Toluenesulfonic acid, solid
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 8
14.4 — Packing group
- Packing group (ADR)
- III
- Packing group (IMDG)
- III
- Packing group (IATA)
- III
- Packing group (ADN)
- III
- Packing group (RID)
- III
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
This compound is primarily used as an acid catalyst in organic synthesis, particularly in the production of esters, ethers, and other organic compounds. It is also utilized in the polymer industry for the synthesis of polyesters and in the preparation of various pharmaceuticals. Additionally, p-toluenesulfonic acid monohydrate is employed in the formulation of adhesives and coatings, where its catalytic properties enhance the curing processes. Its role in analytical chemistry includes use in titrations and as a reagent in various chemical analyses.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL1529A
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 190.22 g/mol
| Test | Standard | Observed |
|---|---|---|
| Purity | 98.5% min | 98.7% |
| Melting Point | 105-110 °C | 108 °C |
| Moisture Content | <1% | 0.5% |
| Residue on Ignition | <0.1% | 0.05% |
| Related Substances | None detected | None detected |
| Solubility | Soluble in water | Fully soluble in water at room temperature. |
The above product is expected to comply with AR grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| AR | 98.5% min | 105-110 °C | <1% | <0.1% | None detected | Soluble in water |
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