Thymol Blue Indicator Solution
- CAS Number
- -
- HSN Code
- 38229090
- Molecular Formula
- C27H30O5S
- Catalogue Number
- AL01510
- Purity
- N/A
- Molecular Weight
- 450.59 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Thymol blue indicator solution is a ready-made preparation of a dual-range pH indicator, specifically designed for direct titration use. This solution exhibits a color change from yellow to blue over a pH range of approximately 1.2 to 2.8 (acidic) and from yellow to blue over a pH range of approximately 8.0 to 9.6 (alkaline). Thymol blue is a sulfonphthalein dye, which is notable for its ability to indicate pH changes in various chemical environments. This product is particularly useful in laboratory settings for titrations and other analytical applications where precise pH measurement is required.
Also known as Thymol blue, 4-(Isopropyl-2-methylphenyl) phenol sulfonic acid.
- Catalogue No.
- AL01510
- CAS Number
- -
- Molecular Formula
- C27H30O5S
- Molecular Weight
- 450.59 g/mol
- HSN Code
- 38229090
- Grade
- Ready-to-use indicator solution
- Product Form
- Mixture
The thymol blue indicator solution appears as an orange-red liquid with a density of 0.979 g/mL. It is soluble in water and exhibits a characteristic odor typical of organic solvents. The solution is stable under normal laboratory conditions and should be stored in a cool, dry place away from direct sunlight. The boiling point of the solution is approximately 100 °C, while the freezing point is around -5 °C, depending on the concentration of the solution. The pH of the solution is typically around 7.0, making it neutral in nature.
- Appearance
- Orange-red liquid
- Shelf Life
- 12 months
- Packaging
- Available in 100 mL and 500 mL bottles
- Storage
- Store in a cool, dry place, away from direct sunlight and ignition sources.
1.1 — Product identifier
- Chemical Name
- Thymol Blue Indicator Solution
- Catalogue No.
- AL01510
- Product form
- Mixture
- CAS Number
- Not applicable
- EC Number
- Not applicable
- Grade
- Ready-to-use indicator solution
- EC Index Number
- Not applicable
- Chemical Formula
- C27H30O5S
- HSN Code
- 38229090
- Synonyms
- Thymol blue, 4-(Isopropyl-2-methylphenyl) phenol sulfonic acid
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- pH indicator in titrations
- 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
- Flammable liquid and vapor; may cause skin and eye irritation.
3.1 — Substance
- Name
- Thymol Blue Indicator Solution
- CAS No.
- Not applicable
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 soap and water. If irritation occurs, seek medical attention.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention.
- First-aid measures after ingestion
- Do not induce vomiting. Rinse mouth and seek medical attention.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of eyes, skin, and respiratory tract; headache; dizziness.
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; keep away from heat, sparks, open flames, and hot surfaces.
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. Use appropriate protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Contain spill and absorb with inert material. 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
- Avoid contact with skin and eyes. Use in a well-ventilated area.
- 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 heat and ignition sources.
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
- Orange-red
- Odour
- Characteristic organic solvent odor
- Odour threshold
- Not applicable
- pH value
- 7.0
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- Not applicable
- Freezing point
- -5 °C
- Boiling point
- 100 °C
- Flash point
- Not applicable
- 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
- 0.979 g/mL
- Solubility
- Soluble in water
- 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
- Stable under normal conditions; avoid 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 oxidizers, strong acids, and bases.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Not classified as acutely toxic; may cause irritation.
- Skin corrosion/irritation
- May cause skin irritation.
- Serious eye damage/irritation
- Causes serious eye irritation.
- Respiratory or skin sensitisation
- Not classified as 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)
- UN 1170
- UN-No. (IMDG)
- UN 1170
- UN-No. (IATA)
- UN 1170
- UN-No. (ADN)
- UN 1170
- UN-No. (RID)
- UN 1170
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Ethyl alcohol solution
- Proper Shipping Name (IMDG)
- Ethyl alcohol solution
- Proper Shipping Name (IATA)
- Ethyl alcohol solution
- Proper Shipping Name (ADN)
- Ethyl alcohol solution
- Proper Shipping Name (RID)
- Ethyl alcohol solution
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 3
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
Thymol blue indicator solution is widely used in acid-base titrations, serving as a reliable pH indicator across both acidic and alkaline ranges. It is commonly employed in educational laboratories for teaching purposes, as well as in research settings for various chemical analyses. Additionally, thymol blue is utilized in the food industry for quality control processes, and in environmental testing to monitor pH levels in water samples. Its versatility makes it an essential tool in analytical chemistry, biochemistry, and environmental science.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL01510
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 450.59 g/mol
| Test | Standard | Observed |
|---|---|---|
| Appearance | Orange-red liquid | Orange-red liquid |
| Density | 0.979 g/mL | 0.979 g/mL |
| pH | 7.0 | 7.0 |
| Boiling Point | 100 °C | 100 °C |
The above product is expected to comply with Ready-to-use indicator solution grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| Ready-to-use indicator solution | N/A | 100 °C | N/A | N/A | N/A | Soluble in water |
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