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Chlorotrimethylsilane

Product Name
Chlorotrimethylsilane
CAS No.
75-77-4
Chemical Name
Chlorotrimethylsilane
Synonyms
CSI;TMCS;TMSCL;CT2950;tl1163;TL 1163;75-77-4;TSL 8031;SILANE M3;(CH3)3SiCl
CBNumber
CB4375627
Molecular Formula
C3H9ClSi
Formula Weight
108.64
MOL File
75-77-4.mol
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Chlorotrimethylsilane Property

Melting point:
−40 °C(lit.)
Boiling point:
57 °C(lit.)
Density 
0.857 g/mL at 25 °C
vapor density 
3.7 (vs air)
vapor pressure 
100 mm Hg ( 25 °C)
refractive index 
n20/D 1.500
Flash point:
104 °F
storage temp. 
Store below +30°C.
solubility 
Miscible with ether, benzene, diethylether and perchloroethylene.
form 
Liquid
Specific Gravity
0.8536 (27℃)
color 
Clear colorless
explosive limit
1.5-46%(V)
Water Solubility 
REACTS
Hydrolytic Sensitivity
8: reacts rapidly with moisture, water, protic solvents
Sensitive 
Moisture Sensitive
BRN 
1209232
Stability:
Stable. Highly flammable - note low flash point. Reacts violently with water. Incompatible with water, moisture, strong oxidizing agents, strong acids, strong bases, aldehydes, alcohols, amines, esters, ketones.
InChIKey
IJOOHPMOJXWVHK-UHFFFAOYSA-N
CAS DataBase Reference
75-77-4(CAS DataBase Reference)
NIST Chemistry Reference
Silane, chlorotrimethyl-(75-77-4)
EPA Substance Registry System
Trimethylchlorosilane (75-77-4)
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Safety

Hazard Codes 
T,F,C,Xn
Risk Statements 
20/21-36/38-34-21-14-11-37-35-19-40-10-67-20/21/22-52
Safety Statements 
26-36/37/39-45-16-36/37-7/9
RIDADR 
UN 2924 3/PG 2
WGK Germany 
2
RTECS 
VV2710000
10-21
Autoignition Temperature
752 °F
Hazard Note 
Highly Flammable/Corrosive/Moisture Sensitive
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29310095
Hazardous Substances Data
75-77-4(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 4868 mg/kg LD50 dermal Rabbit 1530 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

H226Flammable liquid and vapour

H290May be corrosive to metals

H302Harmful if swallowed

H303May be harmfulif swallowed

H312Harmful in contact with skin

H314Causes severe skin burns and eye damage

H318Causes serious eye damage

H331Toxic if inhaled

H335May cause respiratory irritation

H336May cause drowsiness or dizziness

H351Suspected of causing cancer

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P234Keep only in original container.

P240Ground/bond container and receiving equipment.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P310Immediately call a POISON CENTER or doctor/physician.

P390Absorb spillage to prevent material damage.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P370+P378In case of fire: Use … for extinction.

P405Store locked up.

P406Store in corrosive resistant/… container with a resistant inner liner.

P403+P235Store in a well-ventilated place. Keep cool.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.18737
Product name
Chlorotrimethylsilane
Purity
for synthesis
Packaging
100 mL
Price
$37.28
Updated
2021/03/22
Sigma-Aldrich
Product number
1.02333
Product name
Chlorotrimethylsilane
Purity
for gas chromatography
Packaging
100 mL
Price
$44.03
Updated
2021/03/22
Sigma-Aldrich
Product number
384410
Product name
Chlorotrimethylsilane solution
Purity
1.0 M in THF
Packaging
100ml
Price
$40.2
Updated
2021/03/22
Sigma-Aldrich
Product number
1.02333
Product name
Chlorotrimethylsilane
Purity
for gas chromatography
Packaging
250 mL
Price
$89.35
Updated
2021/03/22
Sigma-Aldrich
Product number
8.18737
Product name
Chlorotrimethylsilane
Purity
for synthesis
Packaging
500 mL
Price
$114.7
Updated
2021/03/22
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Chlorotrimethylsilane Chemical Properties,Usage,Production

Chemical Properties

A clear, colorless, caustic and highly flammable liquid with a pungent odour. Readily hydrolyzed with liberation of hydrogen chloride; soluble in benzene, ether and perchloroethylene.

Chemical Properties

Trimethylchlorosilane is a colorless, fuming liquid. Irritating odor.

Physical properties

bp 57°C; d 0.856 g cm?3.

Uses

Related to the epoxide ring opening, TMSCl also mediates some cyclopropane ring opening reactions. For example, treatment of 1-aceto-2,2-dimethylcyclopropane with TMSCl and sodium chloride in acetonitrile at 55°C for 24 h generated 5-chloro-5-methyl-2-hexanone in 84% yield (eq 39).When sodium iodide was employed to replace sodium chloride, iodotrimethylsilane generated in situ, and the reaction completed under more facile conditions (rt and 12 h). Interestingly, the dominant product is 5-iodo-4,4-dimethyl-2-pentanone (eq 40), arising from iodide attacking at the less hindered secondary methylene carbon, instead of the quaternary dimethylmethylene carbon.

Uses

Trimethylsilyl chloride(TMCS) is the most extensively used derivatization reagent for gas chromatography.The reactions are generally performed under anhydrous conditions although reactions can be performed on samples obtained from water-containing samples.There are considerable opportunities for artifacts stemming from a variety of reasons including off-target reactions with aldehydes and ketones.The rate of reaction of TMCS with nucleophilic targets is comparatively slow compared to other alkylsilyl chlorides and requires the presence of a base catalyst such as pyridine.TMCS is included as a catalyst with other trialkylsilyl reagent such N,O-bis- (trimethylsilyl)trifluroacetamide (BSA) or N-methyl-N-(trimethylsilyl)trifluoroacetamide (MSTFA).The order of functional group reactivity is alcohols>phenols>carboxylic acids>amines>amides.

Uses

Chlorotrimethylsilane is a typical Silane Blocking Agent, which can protect or deprotect functional groups selectively. It is widely used in the syntheses of drugs. It have been used in the preparation of volatile derivatives of a wide range of compounds for GC analysis, and used for silylation and as a protection group in the process of various organic synthesis.

Definition

ChEBI: A silyl chloride consisting of a central silicon atom covalently bound to one chloro and three methyl groups. Chlorotrimethylsilane is a derivatisation agent used in gas chromatography/mass spectrometry applications.

General Description

A colorless fuming liquid with a pungent odor. Boiling point 135°F Flash point -18°F. Density 0.854 g / cm3. The vapor and liquid may cause burns. Vapors are heavier than air.

Reactivity Profile

Chlorotrimethylsilane reacts vigorously and exothermically with water to produce hydrogen chloride.

Health Hazard

Similar to other silanes. Toxicity is rated high for inhalation, ingestion and local irritation. May cause death or permanent injury after a very short exposure to small quantities.

Fire Hazard

Violent reaction with water. Toxic and irritating hydrogen chloride and phosgene may be formed in fires. Difficult to extinguish, re-ignition may occur. Flashback along vapor trail may occur. Containers may explode in fire. Vapor may explode if ignited in enclosed area. When heated to decomposition or on contact with acids or acid fumes, chloride fumes are emitted. Reacts with surface moisture, releasing hydrogen chloride, which will corrode common metals and form flammable hydrogen gas. Avoid contact with water; Chlorotrimethylsilane readily hydrolyzes, liberating hydrochloric acid. Hazardous polymerization may not occur.

Safety Profile

Poison by ingestion and skin contact. Moderately toxic by inhalation and intraperitoneal routes. A corrosive irritant to skin, eyes, and mucous membranes. Questionable carcinogen with experimental neoplastigenic data. Mutation data reported. A flammable liquid and very dangerous fire hazard when exposed to heat or flame. Violent reaction with water or hexafluoroisopropylideneamino lithium, A preparative hazard. To fight fire, use foam, alcohol foam, fog. When heated to decomposition it emits toxic fumes of Cl-. An intermediate in the production of silicones. See also CHLOROSILASES.

Potential Exposure

Trimethylchlorosilane is used as an intermediate to make silicone products, including lubricants

Shipping

UN1298 Trimethylchlorosilane, Hazard Class: 3; Labels: 3-Flammable liquid, 8-Corrosive material.

Purification Methods

Likely impurities are other chlorinated methylsilanes and tetrachlorosilane (b 57.6o), some of which can form azeotropes. To avoid the latter, very efficient fractional distillation is required. It has been fractionated through a 12 plate glass helices-packed column with only the heart-cut material being used. It has also been fractionated through a 90cm, 19mm diameter Stedman column (p 11). Purify it by redistilling from CaH2 before use. [Sauer et al. J Am Chem Soc 70, 4254 1948, Sauer & Hadsell J Am Chem Soc 70 4258 1948, Langer et al. J Org Chem 23 50 1958, Beilstein 4 IV 4007.] FLAMMABLE and CORROSIVE.

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Chlorosilanes react vigorously with bases and both organic and inorganic acids generating toxic and/or flammable gases. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous hydrogen. Attacks metals in the presence of moisture. Vigorous reaction with aluminum powder.

Waste Disposal

Do not discharge into drains or sewers. Use a licensed disposal contractor to an approved landfill. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office for guidance on acceptable disposal practices. The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material’s impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Chlorotrimethylsilane Preparation Products And Raw materials

Raw materials

Preparation Products

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Chlorotrimethylsilane Suppliers

Shanghai Wohua Chemical Co., Ltd.
Tel
021-57681602-802;021-57681602-801
Fax
57683062-808
Email
2436856583@qq.com;282036397@qq.com
Country
China
ProdList
275
Advantage
58
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
Changzhou Xuanming Chemical Co., Ltd.
Tel
Fax
0519-85190960
Email
36485073@qq.com
Country
China
ProdList
89
Advantage
58
Nanjing Habo Medical Technology Co., Ltd.
Tel
025-85760892-
Fax
025-85766769
Email
sales@habotech.com;
Country
China
ProdList
1096
Advantage
60
Shanghai Macklin Biochemical Co.,Ltd.
Tel
Fax
021-50706099
Email
shenlinxing@macklin.cn
Country
China
ProdList
15908
Advantage
55
Shanghai heller chemical technology co., ltd.
Tel
Email
3300324741@qq.com
Country
China
ProdList
136
Advantage
58
Liaocheng Yuze Chemical Products Co., Ltd.
Tel
;
Email
13589473332@163.com;13589473332@163.com
Country
China
ProdList
29
Advantage
58
Shandong Zhenkun New Material Co., LTD
Tel
;
Fax
13683127222
Email
277809310@qq.com;277809310@qq.com
Country
China
ProdList
21
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
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View Lastest Price from Chlorotrimethylsilane manufacturers

Hebei Crovell Biotech Co Ltd
Product
Chlorotrimethylsilane 75-77-4
Price
US $15.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50 ton
Release date
2021-06-24
Wuhan wingroup Pharmaceutical Co., Ltd
Product
Chlorotrimethylsilane 75-77-4
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20 tons
Release date
2021-07-13
Zhuozhou Wenxi import and Export Co., Ltd
Product
Trimethyl chlorosilane 75-77-4
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-10

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