Material Safety Data Sheet
tert-Butylchlorodimethylsilane, solution in dichloromethane

ACC# 10754
Section 1 - Chemical Product and Company Identification
MSDS Name: tert-Butylchlorodimethylsilane, solution in dichloromethane
Catalog Numbers: AC369100000, AC369101000
Synonyms: TBDMSCl; tert-Butyldimethylsilyl chloride
Company Identification:
              Acros Organics N.V.
              One Reagent Lane
              Fair Lawn, NJ 07410
For information in North America, call: 800-ACROS-01
For emergencies in the US, call CHEMTREC: 800-424-9300

Section 2 - Composition, Information on Ingredients

CAS# Chemical Name Percent EINECS/ELINCS
75-09-2 Methylene chloride 88% 200-838-9
18162-48-6 Silane, chloro(1,1-dimethylethyl)dimethyl- 12% 242-042-4

Section 3 - Hazards Identification

EMERGENCY OVERVIEW

Not available. Appearance: colorless clear liquid. Flash Point: 58 deg C.
Not available.
Target Organs: Respiratory system, gastrointestinal system, eyes, skin.


Potential Health Effects
Eye: Causes eye burns.
Skin: Causes skin burns.
Ingestion: Causes gastrointestinal tract burns.
Inhalation: Causes chemical burns to the respiratory tract.
Chronic: Limited evidence of a carcinogenic effect.

Section 4 - First Aid Measures


Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid imme diately.
Skin: Get medical aid immediately. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion: Do not induce vomiting. Get medical aid immediately.
Inhalation: Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician: Treat symptomatically and supportively.

Section 5 - Fire Fighting Measures


General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Combustible liquid.
Extinguishing Media: Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!
Flash Point: 58 deg C ( 136.40 deg F)
Autoignition Temperature: Not available.
Explosion Limits, Lower:Not available.
Upper: Not available.
NFPA Rating: 2 - health, 1 - flammability, 0 - instability

Section 6 - Accidental Release Measures


General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition. Use a spark-proof tool. Do not expose spill to water. Do not let this chemical enter the environment.

Section 7 - Handling and Storage


Handling: Do not allow water to get into the container because of violent reaction. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use and store under nitrogen. Use only in a chemical fume hood.
Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Corrosives area. Store protected from moisture.

Section 8 - Exposure Controls, Personal Protection


Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits
Chemical Name ACGIH NIOSH OSHA - Final PELs
Methylene chloride 50 ppm TWA 2300 ppm IDLH 25 ppm TWA (8 hr); 125 ppm STEL (15 min); 12.5 ppm Action Level (See 29 CFR 1910 .1052)
Silane, chloro(1,1-dimethylethyl)dimethyl- none listed 6 mg/m3 TWA (listed under Silica, amorphous).3000 mg/m3 IDLH (listed under Silica, amorphous). none listed

OSHA Vacated PELs: Methylene chloride: 500 ppm TWA Silane, chloro(1,1-dimethylethyl)dimethyl-: No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes: Not available.
Skin: Wear appropriate protective gloves to prevent skin exposure.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - Physical and Chemical Properties


Physical State: Clear liquid
Appearance: colorless
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Vapor Density: Not available.
Evaporation Rate:Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point:Not available.
Decomposition Temperature:Not available.
Solubility: Not available.
Specific Gravity/Density:1.225
Molecular Formula:C6H15ClSi
Molecular Weight:150.72

Section 10 - Stability and Reactivity


Chemical Stability: Stable under normal temperatures and pressures.
Conditions to Avoid: Incompatible materials, ignition sources, heat.
Incompatibilities with Other Materials: Strong oxidizing agents, aluminum, alkali metals.
Hazardous Decomposition Products: Hydrogen chloride, carbon monoxide, carbon dioxide, silicon dioxide, phosgene gas.
Hazardous Polymerization: Will not occur.

Section 11 - Toxicological Information


RTECS#:      
CAS# 75-09-2: PA8050000      
CAS# 18162-48-6: VV2000000
LD50/LC50:
CAS# 75-09-2:
     Draize test, rabbit, eye: 162 mg Moderate;
     Draize test, rabbit, eye: 10 mg Mild;
     Draize test, rabbit, eye: 500 mg/24H Mild;
     Draize test, rabbit, skin: 810 mg/24H Severe;
     Draize test, rabbit, skin: 100 mg/24H Moderate;
     Inhalation, mouse: LC50 = 14400 ppm/7H;
     Inhalation, mouse: LC50 = 49100 mg/m3/6H;
     Inhalation, mouse: LC50 = 54000 mg/m3/2H;
     Inhalation, mouse: LC50 = 56220 mg/m3/7H;
     Inhalation, rat: LC50 = 52 gm/m3;
     Inhalation, rat: LC50 = 76000 mg/m3/4H;
     Inhalation, rat: LC50 =
CAS# 18162-48-6:
.

Carcinogenicity:
CAS# 75-09-2:

CAS# 18162-48-6: Not listed by ACGIH, IARC, NTP, or CA Prop 65.

Epidemiology: No data available.
Teratogenicity: No data available.
Reproductive Effects: No data available.
Mutagenicity: No data available.
Neurotoxicity: No data available.
Other Studies:

Section 12 - Ecological Information


Ecotoxicity: No data available. No information available.
Environmental: No information available.
Physical: No information available.
Other: Do not empty into drains.

Section 13 - Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series:
CAS# 75-09-2: waste number U080.

Section 14 - Transport Information

US DOT Canada TDG
Shipping Name: CORROSIVE LIQUID, TOXIC, N.O.S.* No information available.
Hazard Class: 8
UN Number: UN2922
Packing Group: III

Section 15 - Regulatory Information

US FEDERAL
TSCA
     CAS# 75-09-2 is listed on the TSCA inventory.
     CAS# 18162-48-6 is listed on the TSCA inventory.
Health & Safety Reporting List
     CAS# 75-09-2: Effective 10/4/82, Sunset 10/4/92
Chemical Test Rules
     None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
     None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
     None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
     CAS# 75-09-2: 1000 lb final RQ; 454 kg final RQ
SARA Section 302 Extremely Hazardous Substances
     None of the chemicals in this product have a TPQ.
SARA Codes
     CAS # 75-09-2: immediate, delayed.
Section 313
     This material contains Methylene chloride (CAS# 75-09-2, 88%),which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act:
     CAS# 75-09-2 is listed as a hazardous air pollutant (HAP).

     This material does not contain any Class 1 Ozone depletors.
     This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
     None of the chemicals in this product are listed as Hazardous Substances under the CWA.      CAS# 75-09-2 is listed as a Priority Pollutant under the Clean Water      Act. CAS# 75-09-2 is listed as a Toxic Pollutant under the Clean Water Act.
OSHA:
     None of the chemicals in this product are considered highly hazardous by OSHA.
STATE
     CAS# 75-09-2 can be found on the following state right to know lists: California, New Jersey, Pennsylvania, Minnesota, Massachusetts.
     CAS# 18162-48-6 can be found on the following state right to know lists: California, (listed as Silica, amorphous), New Jersey, (listed as Silica, amorphous), Pennsylvania, (listed as Silica, amorphous), Minnesota, (listed as Silica, amorphous), Massachusetts, (listed as Silica, amorphous).

California Prop 65
The following statement(s) is(are) made in order to comply with the California Safe Drinking Water Act:
WARNING: This product contains Methylene chloride, a chemical known to the state of California to cause cancer.
California No Significant Risk Level: CAS# 75-09-2: 200 æg/day NSRL (inhalation); 50 æg/day NSRL (except inhalation)

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
     C
Risk Phrases:
     R 29 Contact with water liberates toxic gas.
     R 34 Causes burns.
     R 40 Limited evidence of a carcinogenic effect.

Safety Phrases:
     S 23 Do not inhale gas/fumes/vapour/spray.
     S 24/25 Avoid contact with skin and eyes.
     S 26 In case of contact with eyes, rinse immediately with plenty of
     water and seek medical advice.
     S 36/37/39 Wear suitable protective clothing, gloves and eye/face pr
     otection.
     S 45 In case of accident or if you feel unwell, seek medical advice
     immediately (show the label where possible).

WGK (Water Danger/Protection)
     CAS# 75-09-2: 2
     CAS# 18162-48-6: No information available.
Canada - DSL/NDSL
     CAS# 75-09-2 is listed on Canada's DSL List.
     CAS# 18162-48-6 is listed on Canada's NDSL List.
Canada - WHMIS
     not available.
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
     CAS# 75-09-2 is listed on the Canadian Ingredient Disclosure List.
     CAS# 18162-48-6 (listed as Silica, amorphous) is listed on the Canadian Ingredient Disclosure List.

Section 16 - Additional Information

MSDS Creation Date: 8/04/2005
Revision #0 Date: Original.

The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall Fisher be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Fisher has been advised of the possibility of such damages.