Hexamethyldisilazane
Synonyms: HMDS, Hexamethyldisilazane
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Chemical Name
Hexamethyldisilazane
Product Form
Substance
Catalogue No.
AL2326A
CAS Number
999-97-3
EC Number
213-668-5
EC Index Number
612-001-00-7
Grade
98%
HSN Code
29319090
Molecular Formula
C6H19NSi2
SECTION 1: Identification of the substance/mixture and of the company/undertaking
1.1 Product identifier
Chemical Name
Hexamethyldisilazane
Catalogue No.
AL2326A
Product form
Substance
CAS Number
999-97-3
EC Number
213-668-5
Grade
98%
EC Index Number
612-001-00-7
Chemical Formula
C6H19NSi2
HSN Code
29319090
Synonyms
HMDS, Hexamethyldisilazane
Chemical Structure
-
1.2 Relevant identified uses of the substance or mixture and uses advised against
Use of the substance/mixture
Silylating agent, adhesion promoter
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
SECTION 2: Hazards identification
2.3 Other hazards
Other hazards
May cause respiratory irritation; may cause skin and eye irritation.
SECTION 3: Composition/information on ingredients
3.1 Substance
Name
Hexamethyldisilazane
CAS No.
999-97-3
SECTION 4: First aid measures
4.1 Description of first aid measures
First-aid measures after inhalation
Move to fresh air. If breathing is difficult, give oxygen. Seek medical attention if symptoms persist.
First-aid measures after skin contact
Wash with soap and water. Remove contaminated clothing. 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 if irritation persists.
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
Coughing, shortness of breath, skin irritation, eye irritation.
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.
SECTION 5: Fire-fighting measures
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. Vapors may form explosive mixtures with air.
5.3 Advice for firefighters
Protection during firefighting
Do not enter fire area without proper protective equipment, including respiratory protection.
SECTION 6: Accidental release measures
6.1.1 For non-emergency personnel
Emergency procedures
Evacuate area. Remove all sources of ignition. Ventilate area.
6.3 Methods and material for containment and cleaning up
Methods for cleaning up
Contain spill with inert material. Collect and place in suitable containers for disposal.
6.4 Reference to other sections
Reference
Not specified
SECTION 7: Handling and storage
7.1 Precautions for safe handling
Precautions for safe handling
Use in a fume hood. Wear appropriate personal protective equipment (PPE).
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. Keep container tightly closed.
SECTION 8: Exposure controls/personal protection
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.
SECTION 9: Physical and chemical properties
9.1 Information on basic physical and chemical properties
Physical state
Liquid
Colour
Colorless
Odour
Ammonia-like
Odour threshold
Not available
pH value
Not applicable
Relative evaporation rate (butylacetate=1)
Not available
Melting point
-50 °C
Freezing point
Not available
Boiling point
100 °C
Flash point
15 °C
Auto-ignition temperature
Not available
Decomposition temperature
Not available
Flammability (solid, gas)
Flammable liquid
Vapour pressure
Not available
Relative vapour density at 20°C
Not available
Density
0.774 g/mL
Solubility
Soluble in organic solvents, insoluble in water
Log Pow
Not available
Viscosity, kinematic
Not available
Viscosity, dynamic
Not available
Explosive properties
Not explosive
Oxidising properties
Not oxidizing
Explosive limits
Not available
SECTION 10: Stability and reactivity
10.1 Reactivity
Reactivity
Stable under normal conditions. Reacts with water to form silanol and ammonia.
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 oxidizing agents, strong acids, water.
10.6 Hazardous decomposition products
Hazardous decomposition products
Not specified
SECTION 11: Toxicological information
11.1 Information on toxicological effects
Acute toxicity
Toxic if inhaled, harmful if swallowed.
Skin corrosion/irritation
Causes skin irritation.
Serious eye damage/irritation
Causes serious eye irritation.
Respiratory or skin sensitisation
May cause an allergic skin reaction.
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
SECTION 12: Ecological information
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
SECTION 13: Disposal considerations
13.1 Waste treatment methods
Additional Info
Dispose of contents/container in accordance with local, regional, national and international regulations.
SECTION 14: Transport information
14.1 UN number
UN-No. (ADR)
UN 3286
UN-No. (IMDG)
UN 3286
UN-No. (IATA)
UN 3286
UN-No. (ADN)
UN 3286
UN-No. (RID)
UN 3286
14.2 UN proper shipping name
Proper Shipping Name (ADR)
Hexamethyldisilazane
Proper Shipping Name (IMDG)
Hexamethyldisilazane
Proper Shipping Name (IATA)
Hexamethyldisilazane
Proper Shipping Name (ADN)
Hexamethyldisilazane
Proper Shipping Name (RID)
Hexamethyldisilazane
14.3 Transport hazard class(es)
Transport hazard class(es)
3 (6.1, 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
SECTION 15: Regulatory information
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
15.1.1 EU-Regulations
Not specified
SECTION 16: Other Information
Disclaimer
The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a guarantee or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text.