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Material Safety Data Sheet

Product No. 18605 Hexamethyldisilazane                                                        

Issue Date (09-13-06)

Review Date (03-02-07)

Section 1: Product and Company Identification

Product Name: Hexamethyldisilazane

Synonym: Bis(trimethlysilyl)amine, HMDS, Hexamethyldisilazane

Company Name

Ted Pella, Inc. and PELCO International, P.O. Box 492477, Redding, CA 96049-2477
Domestic Phone  (800) 237-3526 (Mon-Thu. 6:00AM to 4:30PM PST; Fri 6:00AM to 4:00PM PST)

International Phone (01) (530) 243-2200 (Mon-Thu. 6:00AM to 4:30PM PST; Fri 6:00AM to 4:00PM PST)

Chemtrec Emergency Number 1-800-424-9300 24 hrs a day.

Section 2: Composition / Information on Ingredients

Principle Hazardous Component(s)
(chemical and common name(s)) (Cas. No)

%

OSHA
PEL

mg/m3

ACGIH 
TLV mg/m3

NTP

IARC

OSHA
regulated

1,1,1,3,3,3-Hexamethyldisilazane

(999-97-3)

 

100

ND

ND

ND

ND

ND

Section 3: Hazard Identification
Emergency overview

Appearance: Colorless liquid.

Immediate effects: Corrosive effect on skin, mucous membranes and eyes. Highly flammable

Potential health effects

Primary Routes of entry: Skin, Eyes, Inhalation and Ingestion
Signs and Symptoms of Overexposure: ND
Eyes: Strong corrosive effect.

Skin: Corrosive effect on skin.

Ingestion: Harmful if swallowed.

Inhalation: Slightly hazardous in case of inhalation.

Chronic Exposure: ND

Chemical Listed As Carcinogen Or Potential Carcinogen: No

See Toxicological Information (Section11)

Potential environmental effects

See Ecological Information (Section 12)

Section 4: First Aid Measures
If accidental overexposure is suspected

Eye(s) Contact: Rinse opened eye for several minutes under running water. Then consult a doctor.

Skin Contact: Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
Inhalation: Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.

Ingestion: Seek immediate medical advice.

Note to physician

Treatment: ND

Medical Conditions generally Aggravated by Exposure: ND

Section 5: Fire Fighting Measures
Flash Point: 8º C (46º C)
Flammable Limits: Lower: 0.8 %. Upper: 16.3 %

Auto-ignition point: 380º C (716º C)
Fire Extinguishing Media: Carbon dioxide, sand, extinguishing. Do not use water.
Special Fire Fighting Procedures: ND
Unusual Fire and Explosion Hazards: ND

Hazardous combustion products: Carbon monoxide, Nitrogen oxides, ammonia

DOT Class: Flammable and corrosive.

Section 6: Accidental Release Measures
Steps to be Taken in Case Material is Released or Spilled:
Waste Disposal Methods: Dispose of waste according to Federal, State and Local Regulations.

Section 7: Handling and Storage
Precautions to be Taken in Handling and Storage: Keep container tightly sealed. Store under dry protective gas. Ensure good ventilation in workplace. Keep away from ignition sources. Do not store together with acids. Store away from oxidizing agents.

Storage temperature: Cool temperatures and dry conditions.

Storage Pressure: ND

Section 8: Exposure Controls / Personal Protection
Engineering Controls

Ventilation required: Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.

Personal Protection Equipment

Respiratory protection: Use suitable respirator when high concentrations are present.

Protective gloves: Impervious gloves.
Skin protection: Gloves and protective clothing.
Eye protection: Full face shield, tightly sealed goggles, safety glasses.
Additional clothing and/or equipment: Eye washes and shower stations.

Exposure Guidelines

See Composition/Information on Ingredients (Section2)

Section 9 Physical and Chemical Properties
Appearance and Physical State: Colorless liquid.

Odor (threshold): Pungent

Specific Gravity (H2O=1): 0.774 at 20º C

Vapor Pressure (mm Hg):  103 hPa (77 mm Hg) at 50º C (122º F)

Vapor Density (air=1): > 1

Percent Volatile by volume: ND

 

Evaporation Rate (butyl acetate=1): ~ 1

Boiling Point: 126-127º C (259-261º F)

Freezing point / melting point: ND
pH: ND
Solubility in Water: Insoluble and reacts.
Molecular Weight: 161.3

Section 10: Stability and Reactivity
Stability: Stable in sealed containers in cool area.
Conditions to Avoid: Incompatible materials

Materials to Avoid (Incompatibility): Water/moisture, alcohols, oxidizing agents. Reacts with water/moisture releasing flammable gases.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides, ammonia
Hazardous Polymerization: Will not occur

Section 11: Toxicological Information

Results of component toxicity test performed: Oral (mus, rat), LD50: 850 mg/Kg. Oral (rbt), LD50: 1100 mg/Kg. Dermal (gpg), LD50: 1000 µg/Kg. Dermal (rbt), LD50: 710 µg/Kg. Inhalation (mus), LC50: 12000 mg/M3/2 Hr. Inhalation (rat), LC50: 8700 mg/M3/4 Hr

Human experience: ND

This product does not contain any compounds listed by NTP or IARC or regulated by OSHA as a carcinogen.

Section 12: Ecological Information

Ecological Information: Ecotoxicity: LC50 (fish, Brachydanio rerio): 88 mg/l/96 Hr. EC50 Daphnia, Daphnia magna): 80 mg/l/48 Hr. EC50 (Algae, Scenedesmus subspicatus): 19 mg/l/72 Hr.

Chemical Fate Information: ND

Section 13 Disposal Considerations

RCRA 40 CFR 261 Classification: ND

Federal, State and local laws governing disposal of materials can differ. Ensure proper disposal compliance with proper authorities before disposal.

Section 14: Transportation Information

US DOT Information: Proper shipping name: Flammable liquid, n.o.s. (1,1,1,3,3,3-Hexamethyldisilazane)

Hazard Class: 3, (8)

Packaging group: II

UN Number: UN2924

IATA: Proper shipping name: Flammable liquid, n.o.s. (1,1,1,3,3,3-Hexamethyldisilazane)

Hazard Class: 3, (8)

Packing group: II

UN Number: UN2924

IMO: Proper shipping name: Flammable liquid, n.o.s. (1,1,1,3,3,3-Hexamethyldisilazane)

Class: 3, (8)

UN Number: UN2924

Packing group: II

Marine Pollutant: No

Canadian TDG:

IMDG Page:

Limitations:

Section 15: Regulatory Information

United States Federal Regulations

MSDS complies with OSHA’s Hazard Communication Rule 29, CFR 1910.1200.

SARA: CAS # 999-97-3: Immediate, fire, reactive.

SARA Title III: Section  302 (TPQ): None

RCRA: ND

TSCA: CAS# 999-97-3 is listed on the TSCA Inventory List

CERCLA: No RQ

State Regulations

California Proposition 65: None

International Regulations

All components of this product are listed on the Canadian Domestic Substances List (DSL)

Canada WHMIS: This product has been classified in accordance with the hazard criteria of the CPR and contains all the information required by the CPR.

Europe EINECS Numbers: 21-346-0

 

Section 16: Other Information

Label Information: Corrosive, Highly flammable

European Risk and Safety Phrases: Risk: 11 Highly flammable, 22 Harmful if swallowed. 34 Causes burns.  Safety: 26 In case of contact with eyes rinse immediately with plenty of water and seek medical advice. 36/37/39 Wear suitable protective clothing, gloves and eye/face protection. 45 In case of accident or if you feel unwell, seek medical advice immediately.

European symbols needed: Corrosive, Highly flammable

Canadian WHMIS Symbols: Corrosive, Highly flammable

HMIS® Hazard Rating: Health: 3; Fire: 3; Reactivity: 2

(0=least, 1=Slight, 2=Moderate, 3=High, 4=Extreme)

Abbreviations used in this document

NE= Not established

NA= Not applicable

NIF= No Information Found

ND= No Data

Disclaimer
Ted Pella, Inc. makes no warranty of any kind regarding the information furnished herein. Users should independently determine the suitability and completeness of information from all sources. While this data is presented in good faith and believed to be accurate, it should be considered only as a supplement to other information gathered by the user. It is the User's responsibility to assure the proper use and disposal of these materials as well as the safety and health of all personnel who may work with or otherwise come in contact with these materials.

 

MSDS Form 0013F1 V2