Chemical Product Identification & Regulatory Data
Official chemical identifiers, CAS numbers, and regulatory compliance information
Basic Product Information
Regulatory Identifiers
Chemical Abstracts Service registry number - unique identifier for chemical substances
Uses Information
Overview
2-Methyl-2-propanethiol is a clear, liquid substance commonly used laboratory chemicals, synthesis of substances.
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GHS Hazard Classification & Safety Warnings
Globally Harmonized System (GHS) hazard pictograms, signal words, and safety classifications
Classification Status
Signal Word
Hazard Classifications
GHS Hazard Pictograms & Safety Symbols
GHS02
GHS07
GHS09
GHS (Globally Harmonized System) pictograms indicate specific chemical hazard categories and safety precautions
Hazard Statements
- H225: Highly flammable liquid and vapour.
- H317: May cause an allergic skin reaction.
- H411: Toxic to aquatic life with long lasting effects.
Precautionary Statements
- P210: Keep away from heat/sparks/open flames/hot surfaces. No smoking.
- P233: Keep container tightly closed.
- P240: Ground/bond container and receiving equipment.
- P241: Use explosion-proof electrical/ ventilating/ lighting/ equipment.
- P242: Use only non-sparking tools.
- P243: Take precautionary measures against static discharge.
- P261: Avoid breathing dust/ fume/ gas/ mist/ vapours/ spray.
- P272: Contaminated work clothing should not be allowed out of the workplace.
- P273: Avoid release to the environment.
- P280: Wear protective gloves/ eye protection/ face protection.
- P303+P361+P353: IF ON SKIN (or hair): Remove/ Take off immediately all contaminated clothing. Rinse skin with water/ shower.
- P333+P313: If skin irritation or rash occurs: Get medical advice/ attention.
- P363: Wash contaminated clothing before reuse.
- P370+P378: In case of fire: Use dry sand, dry chemical or alcohol-resistant foam for extinction.
- P391: Collect spillage.
- P403+P235: Store in a well-ventilated place. Keep cool.
- P501: Dispose of contents/ container to an approved waste disposal plant.
Chemical Manufacturers & Supply Chain
Authorized suppliers, manufacturers, and distribution network information
Sigma-Aldrich
manufacturer
3050 Spruce Street SAINT LOUIS MO 63103 USA
US
+1 800-325-5832
+1 800-325-5052
24/7 Emergency Response & Poison Control
Critical emergency contact numbers for chemical spills, exposure incidents, and medical emergencies
CHEMTREC
+1-703-527-3887
US
Chemical Composition & Hazardous Ingredients
Detailed component analysis, concentration ranges, and hazardous substance identification
Chemical Components & Hazardous Substances
| Chemical Name | CAS Number | Concentration | Hazardous |
|---|---|---|---|
| tert-Butyl mercaptan EC: 200-890-2 | 75-66-1 | 90-100% | ⚠️ Hazardous |
Emergency First Aid Measures
Critical first aid procedures for chemical exposure incidents and medical emergencies
🫁 Inhalation Exposure
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
🖐️ Skin Contact
Wash off with soap and plenty of water. Consult a physician.
👁️ Eye Contact
Flush eyes with water as a precaution.
🍽️ Ingestion/Swallowing
Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
Fire Fighting Measures & Emergency Response
Fire suppression methods, extinguishing media, and firefighting safety procedures
✅ Suitable Extinguishing Media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
🛡️ Firefighter Protection Equipment
Wear self-contained breathing apparatus for firefighting if necessary.
Accidental Release Measures & Spill Response
Emergency spill cleanup procedures, containment methods, and environmental protection
🚨 Emergency Procedures
Evacuate personnel to safe areas. Ensure adequate ventilation. Remove all sources of ignition.
🌍 Environmental Precautions
Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.
🧹 Cleanup Methods
Collect with an electrically protected vacuum cleaner or by wet-brushing.
Cleanup Materials:
Place in container for disposal according to local regulations.
Related Chemical Substances & Alternative Products
Similar chemicals with comparable safety profiles and industrial applications
Technical Specifications & Material Properties
Physical state, chemical properties, melting point, boiling point, and material characteristics
Safe Handling & Storage Procedures
Industrial handling precautions, storage conditions, and workplace safety requirements
⚠️ Handling Precautions
• Avoid contact with skin and eyes.
• Avoid inhalation of vapour or mist.
• Use explosion-proof equipment.
• Keep away from sources of ignition - No smoking.
• Take measures to prevent the build up of electrostatic charge.
🏪 Storage Conditions
• Keep container tightly closed in a dry and well-ventilated place.
• Containers which are opened must be carefully resealed and kept upright to prevent leakage.
🔥 Fire Prevention Measures
Keep away from sources of ignition - No smoking.
Exposure Controls & Personal Protective Equipment (PPE)
Occupational exposure limits, engineering controls, and required safety equipment
🏭 Engineering Controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.
🧤 Hand Protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. Full contact Material: Fluorinated rubber Minimum layer thickness: 0.7 mm Break through time: 480 min Material tested: Vitoject® (KCL 890 / Aldrich Z677698, Size M) Splash contact Material: Fluorinated rubber Minimum layer thickness: 0.7 mm Break through time: 480 min Material tested: Vitoject® (KCL 890 / Aldrich Z677698, Size M) data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, e-mail [email protected], test method: EN374 If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario.
👁️ Eye Protection
Face shield and safety glasses Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
😷 Respiratory Protection
Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type AXBEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).
🌍 Environmental Exposure Controls
Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.
Chemical Stability & Reactivity Data
Chemical stability, hazardous reactions, and incompatible materials information
✅ Chemical Stability
Stable under recommended storage conditions.
⚠️ Hazardous Reactions
Vapours may form explosive mixture with air.
🚫 Conditions to Avoid
Heat, flames and sparks.
🧪 Incompatible Materials
Bases, Oxidizing agents, Reducing agents, Alkali metals
💨 Hazardous Decomposition Products
Hazardous decomposition products formed under fire conditions. - Carbon oxides, Sulphur oxides
Ecological Information & Environmental Impact
Environmental toxicity, biodegradation, bioaccumulation, and ecological effects data
🌱 Toxicity
| Toxicity to fish | semi-static test LC50 - Oncorhynchus mykiss (rainbow trout) - 34 mg/l - 96 h (OECD Test Guideline 203) |
| Toxicity to daphnia and other aquatic invertebrates | static test EC50 - Daphnia magna (Water flea) - 6.7 mg/l - 48 h (OECD Test Guideline 202) |
| Toxicity to algae | static test EC50 - Pseudokirchneriella subcapitata - 24 mg/l - 72 h (OECD Test Guideline 201) |
🌱 Persistence and degradability
🌱 Bioaccumulative potential
🌱 Mobility in soil
🌱 Results of PBT and vPvB assessment
🌱 Other adverse effects
Waste Disposal & Treatment Methods
Waste disposal procedures, treatment methods, and regulatory compliance requirements
♻️ Waste Treatment Methods
Burn in a chemical incinerator equipped with an afterburner and scrubber but exert extra care in igniting as this material is highly flammable. Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional waste disposal service to dispose of this material.
🗂️ Product Disposal Recommendations
Dispose of as unused product.
Transportation & Shipping Information
UN numbers, shipping names, transport classes, and regulatory transport requirements
🏷️ UN Number
2347
📦 Proper Shipping Name
Butyl mercaptans
⚠️ Transport Hazard Class
3
📋 Packing Group
II
Regulatory Information & Compliance
Chemical regulations, safety assessments, and regulatory compliance status
📋 Regulatory Summary
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302. This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313. Fire Hazard, Acute Health Hazard.
❌ Chemical Safety Assessment
No chemical safety assessment has been performed for this substance.
ℹ️ Additional Regulatory Information
This product does not contain any chemicals known to State of California to cause cancer, birth defects, or any other reproductive harm.
Chemical Safety FAQ & Common Questions
Most frequently asked questions about safety, handling, storage, and regulatory compliance
What is the hazard signal word for 2-Methyl-2-propanethiol?
The signal word for this substance is "danger".
What is the physical form of 2-Methyl-2-propanethiol?
2-Methyl-2-propanethiol is a liquid appearing as clear, liquid with colourless color. It has unpleasant odor.
What is the solubility of 2-Methyl-2-propanethiol?
1.4 g/l at 20 °℃ - soluble
What is 2-Methyl-2-propanethiol used for?
Laboratory chemicals, Synthesis of substances
What are the hazard statements for 2-Methyl-2-propanethiol?
This substance has 3 hazard statements: H225: Highly flammable liquid and vapour. H317: May cause an allergic skin reaction. H411: Toxic to aquatic life with long lasting effects.
What is the melting point of 2-Methyl-2-propanethiol?
The melting point is -0.5 ℃ and the boiling point is 62 - 65 ℃.