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Safety Data Sheet EN

2-Methyl-2-propanethiol

CAS 75-66-1
EC 200-890-2

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01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
2-Methyl-2-propanethiol
Product Code
149020025; 149020000; 149020500; 149025000
Chemical Name
2-Methyl-2-propanethiol
Synonyms
tert-Butyl mercaptan

Regulatory Identifiers

CAS Number
75-66-1 Check regulations →
EC Number
200-890-2 Check regulations →
REACH No.
01-2119491288-26

Identified Uses

Laboratory chemicals. Sector of use: SU3 - Industrial uses: Uses of substances as such or in preparations at industrial sites. Product category: PC21 - Laboratory chemicals. Process categories: PROC15 - Use as a laboratory reagent. Environmental release category: ERC6a - Industrial use resulting in manufacture of another substance (use of intermediates)

Uses advised against

No Information available

Manufacturers & Suppliers

T

Thermo Fisher Scientific

manufacturer

Janssen Pharmaceuticalaan 3a, 2440 Geel, Belgium

F

Fisher Scientific UK

distributor

Bishop Meadow Road, Loughborough, Leicestershire LE11 5RG, United Kingdom

F

Fisher Scientific AG

distributor

Neuhofstrasse 11, CH 4153 Reinach

+41 (0) 56 618 41 11

Emergency Contacts

US Info

001-800-227-6701

Europe Info

+32 14 57 52 11

US Emergency

001-201-796-7100

Europe Emergency

+32 14 57 52 99

CHEMTREC

001-800-424-9300

CHEMTREC

001-703-527-3887

Tox Info Suisse

145

24hr

Tox Info Suisse

+41-44 251 51 51

Chemtrec

0800 564 402

24h

Chemtrec

+41-43 508 20 11

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified danger

Hazard Classifications

Flam. Liq. Cat. 2 H225
Skin Sens. Cat. 1 H317
Aquatic Chronic Cat. 2 H411

GHS Pictograms

GHS02 - Flammable

GHS02

GHS07 - Health hazard

GHS07

GHS09 - Environmental hazard

GHS09

Hazard Statements

H225 Highly flammable liquid and vapor
H317 May cause an allergic skin reaction
H411 Toxic to aquatic life with long lasting effects

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking
P240 Ground and bond container and receiving equipment
P280 Wear protective gloves/protective clothing/eye protection/face protection
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
P331 Do NOT induce vomiting

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03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type substance
Chemical Name CAS Number Concentration Hazardous
2-Methyl-2-propanethiol EC: 200-890-2 75-66-1 95% Yes
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Remove to fresh air. If not breathing, give artificial respiration. Get medical attention.

Symptoms: Difficulty in breathing. Inhalation of high vapor concentrations may cause symptoms like headache, dizziness, tiredness, nausea and vomiting.

Skin contact

Get medical attention. Wash off immediately with plenty of water for at least 15 minutes.

Symptoms: May cause allergic skin reaction. Symptoms of allergic reaction may include rash, itching, swelling, trouble breathing, tingling of the hands and feet, dizziness, lightheadedness, chest pain, muscle pain or flushing.

Eye contact

Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Get medical attention.

Ingestion

Clean mouth with water. Get medical attention.

Immediate Medical Attention

Get medical attention.

Medical Treatment

Treat symptomatically.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

Suitable media

Carbon dioxide (CO₂). Dry chemical. Chemical foam. Water mist may be used to cool closed containers.

Unsuitable media

No information available.

Specific hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Containers may explode when heated. Vapors may form explosive mixtures with air. Extremely flammable.

Instructions

As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.

Firefighter Protection

As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

Environmental

Do not flush into surface water or sanitary sewer system.

Cleanup methods

Soak up with inert absorbent material

Materials: sand, silica gel, acid binder, universal binder, sawdust

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

Handling

Avoid contact with skin and eyes. Do not breathe mist/vapors/spray. Take precautionary measures against static discharges. Handle product only in closed system or provide appropriate exhaust ventilation. Use spark-proof tools and explosion-proof equipment. Use only non-sparking tools. Keep away from open flames, hot surfaces and sources of ignition. To avoid ignition of vapors by static electricity discharge, all metal parts of the equipment must be grounded.

Storage

Keep in a dry, cool and well-ventilated place. Keep container tightly closed. Keep away from heat, sparks and flame. Flammables area.

Hygiene

Handle in accordance with good industrial hygiene and safety practice. Keep away from food, drink and animal feeding stuffs. Do not eat, drink or smoke when using this product. Remove and wash contaminated clothing and gloves, including the inside, before re-use. Wash hands before breaks and after work.

Fire prevention

Keep away from open flames, hot surfaces and sources of ignition. Use spark-proof tools and explosion-proof equipment. Use only non-sparking tools. To avoid ignition of vapors by static electricity discharge, all metal parts of the equipment must be grounded.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Use explosion-proof electrical/ventilating/lighting/equipment. Ensure that eyewash stations and safety showers are close to the workstation location. Ensure adequate ventilation, especially in confined areas. Wherever possible, engineering control measures such as the isolation or enclosure of the process, the introduction of process or equipment changes to minimise release or contact, and the use of properly designed ventilation systems, should be adopted to control hazardous materials at source

Hands

Protective gloves. Glove material: Natural rubber, Nitrile rubber, Neoprene, PVC. Breakthrough time: See manufacturers recommendations. EU standard: EN 374.

Eyes

Goggles (European standard - EN 166)

Respiratory

No protective equipment is needed under normal use conditions. Large scale/emergency use: Use a NIOSH/MSHA or European Standard EN 136 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Small scale/Laboratory use: Maintain adequate ventilation

Skin/Body

Wear appropriate protective gloves and clothing to prevent skin exposure. Inspect gloves before use. observe the instructions regarding permeability and breakthrough time which are provided by the supplier of the gloves. (Refer to manufacturer/supplier for information) gloves are suitable for the task: Chemical compatibility, Dexterity, Operational conditions, User susceptibility, e.g. sensitisation effects, also take into consideration the specific local conditions under which the product is used, such as the danger of cuts, abrasion. gloves with care avoiding skin contamination.

Environmental

Prevent product from entering drains. Do not allow material to contaminate ground water system.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Physical State
Liquid
Physical State Data
liquid
State Under Standard Conditions
---
Appearance
Colorless
Colour
---
Colour Intensity
---
Form
---
Odor
Stench
Odor Threshold
No data available
Ph
No information available
Melting Point
-1.1 °C / 30 °F
Boiling Point
62 - 65 °C / 143.6 - 149 °F
Flash Point
-24 °C / -11.2 °F
Freezing Point
---
Softening Point
No data available
Solidification Point
---
Cloud Point
---
Crystallisation Point
---
Relative Evaporation Rate
---
Evaporation Rate
---
Vapor Pressure
305 mmHg @ 37.8 °C
Vapor Density
3.0
Relative Density
0.800
Bulk Density
Not applicable
Density
---
Flammability
Highly flammable
Upper Explosive Limit
---
Lower Explosive Limit
---
Explosive Limits
---
Auto Ignition Temperature
No data available
Decomposition Temperature
>65°C
Solubility
---
Partition Coefficient
---
Solubility In Water
slightly soluble
Solubility In Fat
---
Molecular Weight
90.18
Voc Content
---
Metal Corrosion
---
Dynamic Viscosity
0.638 cPs at 20 °C
Kinematic Viscosity
---
Properties Status
---
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

Stability

Stable under normal conditions.

Reactivity

None known, based on information available

Hazardous reactions

Hazardous Polymerization: No information available. Hazardous Reactions: No information available.

Avoid

Keep away from open flames, hot surfaces and sources of ignition. Incompatible products.

Incompatible

Bases. Metals. Reducing Agent.

Decomposition

Carbon monoxide (CO). Carbon dioxide (CO₂). Sulfur oxides. Sulfides.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

The data for this section has not been processed yet.

13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

The data for this section has not been processed yet.

14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
UN2347
Shipping Name
BUTYL MERCAPTAN
Transport Class
3
Packing Group
II
15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

The data for this section has not been processed yet.

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Frequently Asked Questions

Common questions about safety, handling, and properties

What other names is 2-Methyl-2-propanethiol known by?

2-Methyl-2-propanethiol is also known as: tert-Butyl mercaptan

What is the hazard signal word for 2-Methyl-2-propanethiol?

The signal word is danger.

What is the physical form of 2-Methyl-2-propanethiol?

2-Methyl-2-propanethiol is a liquid appearing as colorless . It has stench odor.

What is 2-Methyl-2-propanethiol used for?

Laboratory chemicals. Sector of use: SU3 - Industrial uses: Uses of substances as such or in preparations at industrial sites. Product category: PC21 - Laboratory chemicals. Process categories: PROC15 - Use as a laboratory reagent. Environmental release category: ERC6a - Industrial use resulting in manufacture of another substance (use of intermediates)

What are the hazard statements for 2-Methyl-2-propanethiol?

This substance has 3 hazard statements:

  • H225: Highly flammable liquid and vapor
  • 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 -1.1 °C / 30 °F and the boiling point is 62 - 65 °C / 143.6 - 149 °F.