Chemical Safety Data Sheet MSDS / SDS

Dichlorodimethylsilane

Revision Date:2024-03-16Revision Number:1

SECTION 1: Identification of the substance/mixture and of the company/undertaking

Product identifier

  • Product name: Dichlorodimethylsilane
  • CBnumber: CB8854243
  • CAS: 75-78-5
  • EINECS Number: 200-901-0
  • Synonyms: dichlorodimethylsilane,Me2SiCl2

Relevant identified uses of the substance or mixture and uses advised against

  • Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
  • Uses advised against: none

Company Identification

  • Company: Chemicalbook
  • Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
  • Telephone: 400-158-6606

SECTION 2: Hazards identification

GHS Label elements, including precautionary statements

  • Symbol(GHS)
  • Signal wordDanger
Precautionary statements
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P331 Do NOT induce vomiting.
P310 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. Continuerinsing.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
Hazard statements
H410 Very toxic to aquatic life with long lasting effects
H373 May cause damage to organs through prolonged or repeated exposure
H336 May cause drowsiness or dizziness
H335 May cause respiratory irritation
H331 Toxic if inhaled
H319 Causes serious eye irritation
H314 Causes severe skin burns and eye damage
H304 May be fatal if swallowed and enters airways
H302 Harmful if swallowed
H225 Highly Flammable liquid and vapour

SECTION 3: Composition/information on ingredients

Substance

  • Product name: Dichlorodimethylsilane
  • Synonyms: dichlorodimethylsilane,Me2SiCl2
  • CAS: 75-78-5
  • EC number: 200-901-0
  • MF: C2H6Cl2Si
  • MW: 129.06

SECTION 4: First aid measures

Description of first aid measures

General advice
First aider needs to protect himself. Show this material safety data sheet to the doctor in attendance.
If inhaled
After inhalation: fresh air. Immediately call in physician. If breathing stops: immediately apply artificial respiration, if necessary also oxygen.
In case of skin contact
In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Call a physician immediately.
In case of eye contact
After eye contact: rinse out with plenty of water. Immediately call in ophthalmologist. Remove contact lenses.
If swallowed
After swallowing: make victim drink water (two glasses at most), avoid vomiting (risk of perforation). Call a physician immediately. Do not attempt to neutralise.

Most important symptoms and effects, both acute and delayed

The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11

Indication of any immediate medical attention and special treatment needed

No data available

SECTION 5: Firefighting measures

Extinguishing media

Suitable extinguishing media
Carbon dioxide (CO2) Dry powder
Unsuitable extinguishing media
Foam Water

Special hazards arising from the substance or mixture

Carbon oxides Hydrogen chloride gas silicon oxides

Flash back possible over considerable distance., Container explosion may occur under fire conditions.

Combustible.

Pay attention to flashback.

Vapors are heavier than air and may spread along floors.

Development of hazardous combustion gases or vapours possible in the event of fire. Forms explosive mixtures with air at ambient temperatures.

Advice for firefighters

Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by keeping a safe distance or by wearing suitable protective clothing.

Further information

Water hydrolyzes material liberating acidic gas which in contact with metal surfaces can generate flammable and/or explosive hydrogen gas.Remove container from danger zone and cool with water. Suppress (knock down) gases/vapors/mists with a water spray jet. Prevent fire extinguishing water from contaminating surface water or the ground water system.

NFPA 704

3
3
1
W
HEALTH 3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
FIRE 3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
REACT 1 Normally stable, but can become unstable at elevated temperatures and pressures (e.g. propene)
SPEC. HAZ. W

SECTION 6: Accidental release measures

Personal precautions, protective equipment and emergency procedures

Advice for non-emergency personnel: Do not breathe vapors, aerosols. Avoid substance contact. Ensure adequate ventilation. Keep away from heat and sources of ignition.

Evacuate the danger area, observe emergency procedures, consult an expert. For personal protection see section 8.

Environmental precautions

Do not let product enter drains. Risk of explosion.

Methods and materials for containment and cleaning up

Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up carefully with liquid-absorbent material (e.g.

Chemizorb?). Dispose of properly. Clean up affected area.

Reference to other sections

For disposal see section 13.

SECTION 7: Handling and storage

Precautions for safe handling

Advice on safe handling

Work under hood. Do not inhale substance/mixture. Avoid generation of vapours/aerosols.

Advice on protection against fire and explosion

Keep away from open flames, hot surfaces and sources of ignition.Take precautionary measures against static discharge.

Hygiene measures

Immediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.

For precautions see section 2.2.

Conditions for safe storage, including any incompatibilities

Storage conditions

Keep container tightly closed in a dry and well-ventilated place. Keep away from heat and sources of ignition. Keep locked up or in an area accessible only to qualified or authorized persons.

Keep away from water.

Storage stability

Recommended storage temperature 2 - 8 °C

Handle and store under inert gas.

Specific end use(s)

Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

SECTION 8: Exposure controls/personal protection

control parameter

Hazard composition and occupational exposure limits
Does not contain substances with occupational exposure limits.

Exposure controls

Personal protective equipment
Eye/face protection

Use equipment for eye protection tested and approved under appropriate

government standards such as NIOSH (US) or EN 166(EU). Tightly fitting safety goggles

Skin 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.

The selected protective gloves have to satisfy the specifications of Regulation (EU) 2016/425 and the standard EN 374 derived from it.

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: Nitrile rubber

Minimum layer thickness: 0,4 mm Break through time: 210 min

Material tested:Camatril? (KCL 730 / Aldrich Z677442, Size M)

data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, e-mail sales@kcl.de, 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 EC 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.

Body Protection

Flame retardant antistatic protective clothing.

Respiratory protection

Recommended Filter type: Filter type B

The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer.

These measures have to be properly documented.

Control of environmental exposure

Do not let product enter drains. Risk of explosion.

SECTION 9: Physical and chemical properties

Information on basic physicochemical properties

  • Appearancecolorless liquid
  • OdourNo data available
  • Odour ThresholdNo data available
  • pHNo data available
  • Melting point/freezing pointMelting point/range: -76 °C - lit.
  • Initial boiling point and boiling range 70 °C - lit.
  • Flash point1 °C - closed cup
  • Evaporation rateNo data available
  • Flammability (solid, gas)No data available
  • Upper/lower flammability or explosive limits Upper explosion limit: 10,4 %(V) Lower explosion limit: 5,5 %(V)
  • Vapour pressure 146,26 hPa at 20 °C
  • Vapour density No data available
  • Relative density1,07 g/cm3 at 25 °C
  • Water solubilityhydrolyzes
  • Partition coefficient: n-octanol/waterlog Pow: 1,81
  • Autoignition temperature425 °C at 1.013 hPa
  • Decomposition temperature No data available
  • ViscosityViscosity, kinematic: No data available Viscosity, dynamic: No data available
  • Explosive propertiesNo data available
  • Oxidizing propertiesNo data available

Other safety information

No data available

SECTION 10: Stability and reactivity

Reactivity

Vapors may form explosive mixture with air.

Chemical stability

The product is chemically stable under standard ambient conditions (room temperature) .

Possibility of hazardous reactions

Exothermic reaction with:

Water Alcohols Acetone Esters Ketones Aldehydes Amines alkalines

Oxidizing agents acids

Risk of ignition or formation of inflammable gases or vapours with: Ammonia


Conditions to avoid

Do not allow water to enter container because of violent reaction. Warming.

Incompatible materials

No data available

Hazardous decomposition products

In the event of fire: see section 5

SECTION 11: Toxicological information

Information on toxicological effects

Acute toxicity
LD50 Oral - Rat - male and female - 595 mg/kg (OECD Test Guideline 401)
LC50 Inhalation - Rat - male and female - 4 h - 2,77 mg/l (OECD Test Guideline 403)
Skin corrosion/irritation
Skin - Rabbit
Result: Causes severe burns. - 4 h (OECD Test Guideline 404)
Serious eye damage/eye irritation
Causes serious eye damage.
Respiratory or skin sensitization
No data available
Germ cell mutagenicity
Ames test
S. typhimurium Result: negative
OECD Test Guideline 475 Rat - male
Result: negative
Carcinogenicity
IARC: No ingredient of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
No data available
Specific target organ toxicity - single exposure
May cause respiratory irritation.
Specific target organ toxicity - repeated exposure
No data available
Aspiration hazard
No data available
Toxicity
LD50 orally in Rabbit: 6056 mg/kg

SECTION 12: Ecological information

Toxicity

Toxicity to fish
LC0 - Danio rerio (zebra fish) - >= 1.000 mg/l - 96 h

Remarks: (External MSDS)

Persistence and degradability

No data available

Bioaccumulative potential

No data available

Mobility in soil

No data available

Results of PBT and vPvB assessment

This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

Other adverse effects

No data available

SECTION 13: Disposal considerations

Waste treatment methods

Product

See www.retrologistik.com for processes regarding the return of chemicals and containers, or contact us there if you have further questions.

SECTION 14: Transport information

UN number

ADR/RID: 1162 IMDG: 1162 IATA: 1162

UN proper shipping name


ADR/RID: DIMETHYLDICHLOROSILANE IMDG: DIMETHYLDICHLOROSILANE


IATA: Dimethyldichlorosilane

Passenger Aircraft: Not permitted for transport

14.3

Transport hazard class(es)

ADR/RID: 3 (8) IMDG: 3 (8)


IATA: 3 (8)

14.4

Packaging group

ADR/RID: II IMDG: II


IATA: II

14.5

Environmental hazards

ADR/RID: no IMDG Marine pollutant: no


IATA: no

14.6

Special precautions for user

No data available


SECTION 15: Regulatory information

Safety, health and environmental regulations/legislation specific for the substance or mixture

Regulations on the Safety Management of Hazardous Chemicals
China Catalog of Hazardous chemicals 2015:Listed. website: https://www.mem.gov.cn/
Measures for Environmental Management of New Chemical Substances
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC):Listed. website: https://www.mee.gov.cn/
EC Inventory:Listed.
European Inventory of Existing Commercial Chemical Substances (EINECS):Listed. website: https://echa.europa.eu/
Korea Existing Chemicals List (KECL):Listed. website: http://ncis.nier.go.kr
New Zealand Inventory of Chemicals (NZIoC):Listed. website: https://www.epa.govt.nz/
Philippines Inventory of Chemicals and Chemical Substances (PICCS):Listed. website: https://emb.gov.ph/
Vietnam National Chemical Inventory:Listed. website: https://chemicaldata.gov.vn/
United States Toxic Substances Control Act (TSCA) Inventory:Listed. website: https://www.epa.gov/

SECTION 16: Other information

Abbreviations and acronyms

  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • CAS: Chemical Abstracts Service
  • EC50: Effective Concentration 50%
  • IATA: International Air Transportation Association
  • IMDG: International Maritime Dangerous Goods
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • STEL: Short term exposure limit
  • TWA: Time Weighted Average

References

【1】CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple

【2】ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp

【3】ECHA - European Chemicals Agency, website: https://echa.europa.eu/

【4】eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en

【5】ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg

【6】Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp

【7】HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm

【8】IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/

【9】IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home

【10】Sigma-Aldrich, website: https://www.sigmaaldrich.com/

Other Information

Reacts violently with fire extinguishing agents such as water.The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.Rest and medical observation is therefore essential.Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.Toxicological properties are inferred from Methyldichlorosilane (ICSC 0297).
Disclaimer:

The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.

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