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(Chlorosilyl)methane

HCID 61244
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Basic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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Basic information

CAS
993-00-0
Standard SMILES
C[SiH2]Cl
InChIKey
YGZSVWMBUCGDCV-UHFFFAOYSA-N
Molecular formula
CH5ClSi
Average molar mass
80.59 g/mol
Monoisotopic mass
79.9849044

Overview

Methyl chlorosilane is a colorless gas with a distinctive odor. It is insoluble in water. Its vapors are heavier than air. Contact with the material causes severe irritation to skin, eyes, and mucous membranes. It is toxic by ingestion and skin absorption. It is also a dangerous fire risk. It is used to make water repellent materials. Prolonged exposure of container to fire or intense heat may result in their violent rupturing and rocketing.

Names & identifiers

Preferred name
(Chlorosilyl)methane
IUPAC
chloro(methyl)silane
English name
Chloromethyl silane
Molecular formula
CH5ClSi
Molecular weight
80.59

Names & synonyms

(CHLOROSILYL)METHANERefChem:1050834DTXCID90818510213-600-4993-00-0Chloro(methyl)silaneDTXSID00870821MethylchlorosilanePAH66FWC6LSCHEMBL22226SCHEMBL28604445NS00126910
Show more names
Un2534Einecs 213-600-4Chloromethyl silaneSilane, chloromethyl-Methylchlorosilane,mixed monomerMethylchlorosilane Mixed MonomersSilane, chloromethyl-(6CI,7CI,8CI,9CI)Chloromethyl silane ISO 9001：2015 REACHMethylchlorosilane [un2534] [poison gas]

Database identifiers

CAS
993-00-0
PubChem CID
61244
DTXSID
DTXSID00870821
EC Number
213-600-4

Properties

Computed structural properties

Topological polar surface area
0 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
0
Rotatable bonds
0
Heavy atoms
3
Formal charge
0
Complexity
4.8

Experimental & physicochemical properties

Chemical ClassesCorrosives
SpringerMaterials PropertiesSchoenflies notation
SolubilitySolubility in water: reaction
Flash Point-9 °C
Boiling Point-45 °C @760 [mm Hg]
Melting Point-135 °C
Vapor PressureVapor pressure, kPa at 20 °C: 18.3
Physical Description · 2 items

Methyl chlorosilane is a colorless gas with a distinctive odor. It is insoluble in water. Its vapors are heavier than air. Contact with the material causes severe irritation to skin, eyes, and mucous membranes. It is toxic by ingestion and skin absorption. It is also a dangerous fire risk. It is used to make water repellent materials. Prolonged exposure of container to fire or intense heat may result in their violent rupturing and rocketing.

COLOURLESS LIQUID.

Physicochemical properties

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 4 items

Danger

H220 (100%): Extremely flammable gas [Danger Flammable gases]

P203, P210, P222, P231+P232, P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P370+P378, P377, P381, P402+P404, P403, P405, P410+P403, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 49 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Hazards IdentificationToxic/poison by inhalation (TIH/PIH)
Regulatory Information · 2 items

REACH registered substance: Chloro(methyl)silane (EC: 213-600-4)

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

DOT LabelPoison Gas Flammable Gas Corrosive
Fire Hazards · 3 items

Excerpt from ERG Guide 119 [Gases - Toxic - Flammable]:

· Flammable; may be ignited by heat, sparks or flames.

Extremely flammable.

Health Hazards · 2 items

Excerpt from ERG Guide 119 [Gases - Toxic - Flammable]:

· TOXIC; may be fatal if inhaled or absorbed through skin. Some may cause severe skin burns and eye damage.

DOT ID and Guide2534 119
Reactive GroupChlorosilanes

Chemistry & industry

Applications · 3 items

DescriptionMethyI chlorosilane iS a colorless liquid. Flashpoint=-9"C. NJDHSS (New Jersey Department of Health and Senior Hazard Rating: Health 3 Flammability 4, Reactivity 2W. Reacts with water.Potential Exposure: MethyI chlorosilane is rarely used as a raw material, but it is released during the manufacture of Silicones or siloxanes.

UsesChloromethyl silane is used as an important raw material for organosilicon products such as silicone oil, silicone rubber, and silicone resin, and is also used in the production of waterproofing agents, release agents, etc.

General DescriptionMethyl chlorosilane is a colorless gas with a distinctive odor. Chloromethyl silane is insoluble in water. Its vapors are heavier than air. Contact with the material causes severe irritation to skin, eyes, and mucous membranes. Chloromethyl silane is toxic by ingestion and skin absorption. Chloromethyl silane is also a dangerous fire risk. Chloromethyl silane is used to make water repellent materials. Prolonged exposure of container to fire or intense heat may result in their violent rupturing and rocketing.

Upstream & downstream products

Upstream raw materials

ZINCCopper(I) chlorideChloromethane

Downstream products

ChlorotrimethylsilaneMethyltriacetoxysilaneDichloromethylsilaneMethylsilaneChlorodimethylsilane
Additional notes · 1 item

Related reactions

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Compound notes

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On this pageBasic informationOverviewNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
More actions
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Melting point
-134.1 °C · -134.1°C
Boiling point
8.7 °C · 8.7°C (estimate)
Density
0.884 · 0.8840
form
liquid
FDA UNII
66 FWC6L · PAH66FWC6L
EPA Substance Registry System
Methylchlorosilane (993-00-0)
Symbol(GHS)
2 · GHS02,GHS04,GHS05
Signal word
Danger
Hazard statements
220 · H220-H261-H280-H314
Precautionary statements
210 · P210-P231+P232-P280-P260-P264-P377-P381-P370+P378-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P305+P351+P338-P403-P402+P404-P405-P501
RIDADR
2534 · UN 2534
HazardClass
2.3 · 2.3
REACH Registrations
Inactive
UN Classification
UN Hazard Class: 2.3; UN Subsidiary Risks: 2.1 and 8
Reactivity AlertsHighly Flammable
Reactivity Profile · 1 item

Chlorosilanes, such as METHYLCHLOROSILANE, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases.

Chemical Dangers · 1 item

Decomposes on contact with hot surfaces or flames. This produces toxic and corrosive fumes including hydrogen chloride and phosgene. Decomposes on contact with bases. This produces flammable/explosive gas (hydrogen - see ICSC 0001). Reacts violently with oxidants. Reacts violently with water. This produces hydrogen chloride (see ICSC 0163). Attacks many metals in the presence of water.

DOT Hazard Classification · 4 items

Methylchlorosilane

UN2534

Div 2.3 Poisonous gas (49 eCFR § 173.115)

Div 2.3 Poisonous gas (49 eCFR § 173.115)

Safety & protection

Fire Fighting · 2 items

Excerpt from ERG Guide 119 [Gases - Toxic - Flammable]:

Use alcohol-resistant foam, dry powder, carbon dioxide. NO water.

First Aid Measures · 4 items

Fresh air, rest. Half-upright position. Refer for medical attention.

Remove contaminated clothes. Rinse skin with plenty of water or shower.

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Do NOT induce vomiting. Refer for medical attention .

Accidental Release Measures · 2 items

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

First Aid · 2 items

Excerpt from ERG Guide 119 [Gases - Toxic - Flammable]:

General First Aid:

Safe StorageFireproof. Ventilation along the floor. Cool. Dry. Store in an area without drain or sewer access.
Exposure Control and Personal Protection· Wear positive pressure self-contained breathing apparatus (SCBA).
Nonfire Spill ResponseExcerpt from ERG Guide 119 [Gases - Toxic - Flammable]:
Spillage Disposal · 1 item

Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.

Isolation and Evacuation · 4 items

Excerpt from ERG Guide 119 [Gases - Toxic - Flammable]:

Immediate precautionary measure

Small spill:

Small spill:

Eye PreventionWear safety goggles or eye protection in combination with breathing protection. Wear face shield.
Fire PreventionNO open flames, NO sparks and NO smoking.
Inhalation RiskA harmful contamination of the air will be reached very quickly on evaporation of this substance at 20 °C.

Toxicology

Exposure RoutesThe substance can be absorbed into the body by inhalation.
Signs and Symptoms · 4 items

Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat. Symptoms may be delayed.

Redness. Pain. Skin burns.

Pain. Redness. Severe deep burns.

Abdominal pain. Burning sensation. Shock or collapse.

Regulatory information

DHS Chemicals of Interest (COI) · 4 items

Methylchlorosilane

20

45

Weapons of Mass Effect chemical material that, if stolen or diverted, can be converted into weapons using simple chemistry, equipment, or techniques.

Safety data

ridadr
UN 2534
Signal word
Danger
Symbol(GHS)
GHS02,GHS04,GHS05
hazard_class
2.3
Hazard statements
H220-H261-H280-H314
REACH Registrations
Inactive
Precautionary statements
P210-P231+P232-P280-P260-P264-P377-P381-P370+P378-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P305+P351+P338-P403-P402+P404-P405-P501

DefinitionOne of several intermediates in the formation of silicones or siloxanes, they react with hydroxyl groups on many types of surfaces to produce a permanent, thin-surface film of silicone that imparts water repellency. Examples are methyltrichlorosilane, dimethyldichlorosilane, and trimethylchlorosilane.