Bis(trimethylsilyl)acetylene

Product Name: Bis(trimethylsilyl)acetylene
CAS No.: 14630-40-1
Chemical Name: Bis(trimethylsilyl)acetylene
Synonyms: BTMSA;1,2-Bis(trimethylsilyl)ethyne;BSTMA;Bis(trimethylsilyl)ethyne;1,2-BIS-TRIMETHYLSILANYL-ETHYNE;DK079;DK080;ICLA-002;TIMTEC-BB SBB008997;Ethynylbistrimethylsilanel
CBNumber: CB4376321
Molecular Formula: C8H18Si2
Formula Weight: 170.4
MOL File: 14630-40-1.mol

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Bis(trimethylsilyl)acetylene Property

Melting point:: 21-24 °C(lit.)
Boiling point:: 136-137 °C(lit.)
Density: 0.752 g/mL at 25 °C(lit.)
refractive index: n20/D 1.427(lit.)
Flash point:: 29 °C
storage temp.: 2-8°C
solubility: soluble in Chloroform, Methanol
form: liquid
Specific Gravity: 0.770
color: colorless
Water Solubility: MAY DECOMPOSE
Hydrolytic Sensitivity: 2: reacts with aqueous acid
BRN: 906870
InChIKey: ZDWYFWIBTZJGOR-UHFFFAOYSA-N
CAS DataBase Reference: 14630-40-1(CAS DataBase Reference)
NIST Chemistry Reference: Silane, 1,2-ethynediylbis[trimethyl-(14630-40-1)
EPA Substance Registry System: Silane, 1,2-ethynediylbis[trimethyl- (14630-40-1)

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Safety

Hazard Codes: F,Xi
Risk Statements: 11-36/37/38-10
Safety Statements: 16-26-36
RIDADR: UN 1993 3/PG 2
WGK Germany: 3
F: 10
TSCA: Yes
HazardClass: 3
PackingGroup: III
HS Code: 29310095

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

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

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 187437
Product name: Bis(trimethylsilyl)acetylene
Purity: 99%
Packaging: 10g
Price: $65.6
Updated: 2024/03/01

Sigma-Aldrich

Product number: 187437
Product name: Bis(trimethylsilyl)acetylene
Purity: 99%
Packaging: 50g
Price: $230
Updated: 2024/03/01

TCI Chemical

Product number: B1090
Product name: Bis(trimethylsilyl)acetylene
Purity: >97.0%(GC)
Packaging: 5g
Price: $87
Updated: 2024/03/01

TCI Chemical

Product number: B1090
Product name: Bis(trimethylsilyl)acetylene
Purity: >97.0%(GC)
Packaging: 25g
Price: $261
Updated: 2024/03/01

Alfa Aesar

Product number: A11960
Product name: Bis(trimethylsilyl)acetylene, 99%
Packaging: 10g
Price: $52.65
Updated: 2024/03/01

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Bis(trimethylsilyl)acetylene Chemical Properties,Usage,Production

Chemical Properties

clear colorless liquid after melting

Uses

In the presence of CpCo(CO)2 (cat. no. 245259), undergoes cycloaddition with 1,5-hexadiynes to form benzocyclobutenes.1

Uses

BTMSA is used as starting reagent in the synthesis of functionalized 4-R-1,2-bis(trimethylsilyl)benzenes. It is also used in the synthesis of (+)-brasilenyne2 and (β-diketanato)Ag(BTMSA). Bis(trimethylsilyl)acetylene is a ligand that binds to a central metal ion (e.g. Titanium) to create a coordination complex. One of its complexes, Permethyltitanocene-bis(trimethylsilyl)acetylene, is a catalyst for the head-to-tail dimerization of 1-alkynes (e.g. 3-Penten-1-yne [P227430]).

General Description

Bis(trimethylsilyl)acetylene (BTMSA) participates as nucleophile in Friedel-Crafts type acylations and alkylations. BTMSA undergoes rhodium catalyzed addition reaction with diarylacetylenes. It undergoes cycloaddition with 1,5-hexadiynes in the presence of CpCo(CO)₂ (Cp=cyclopentadienyl) to form benzocyclobutenes. Structure of BTMSA was characterized by a centre of inversion present on triple bond (length=1.208(3)?). TiCl₄-Et₂AlCl catalyzed Diels-Alder reaction of BTMSA with norbornadiene has been reported.

Purification Methods

Dissolve it in pet ether and wash it with ice-cold dilute HCl. The pet ether extract is dried (MgSO4), evaporated and fractionated at 760mm. [Walton & Waugh J Organomet Chem 37 45 1972, Beilstein 4 IV 3950.]

Bis(trimethylsilyl)acetylene Preparation Products And Raw materials

Raw materials

Chlorotrimethylsilane Tetrahydrofuran Copper(I) chloride Acetylene Bromoethane Magnesium

Preparation Products

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Bis(trimethylsilyl)acetylene Suppliers

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View Lastest Price from Bis(trimethylsilyl)acetylene manufacturers

Henan Aochuang Chemical Co.,Ltd.

Product: Bis(trimethylsilyl)acetylene 14630-40-1
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98%
Supply Ability: 1ton
Release date: 2022-09-29

Zhuozhou Wenxi import and Export Co., Ltd

Product: Bis(trimethylsilyl)acetylene 14630-40-1
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

Zhuozhou Wenxi import and Export Co., Ltd

Product: Bis(trimethylsilyl)acetylene 14630-40-1
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-08

14630-40-1, Bis(trimethylsilyl)acetyleneRelated Search:

Bis(trimethylsilyl)sulfate BIS(TRIMETHYLSILYLMETHYL)AMINE BIS(TRIMETHYLSILYLMETHYL)DICHLOROSILANE BIS(PHENYLETHYNYL)DIMETHYLSILANE 1,4-BIS(TRIMETHYLSILYL)-1,3-BUTADIYNE BIS(DIETHYLAMINO)DIMETHYLSILANE bis(4-broMophenyl)-diphenyl-silane bis(4-broMophenyl)diMethylsilane BIS(TRICHLOROSILYLETHYL)BENZENE,TECH-95 BIS(METHYLDIETHOXYSILYLPROPYL)AMINE Bis(trimethylsilyl)methane Tetramethylsilane Bis(trimethylsilyl)acetylene Trimethylsilylacetylene (BIS(TRIMETHYLSILYL)ACETYLENE)(HEXAFLUO&,(bis(trimethylsilyl)acetylene)(hexafluoro-acetyla (TRIMETHYLSILYL)ACETYLENE-13C2 [BIS(TRIMETHYLSILYL)ACETYLENE](HEXAFLUOROACETYLACETONATO)COPPER(I) Bis(trimethylsilyl)acetylene-bis(cyclopentadienyl)(pyridine)zirconium,Bis(cyclopentadienyl)zirconium bis(trimethylsilyl)acetylene pyridine complex

BIS(TRIMETHYLSILYL)ACETYLENE

BSTMA

BTMSA

Bis(trimethylsilyl)acetylene 99%

1,2-BIS-TRIMETHYLSILANYL-ETHYNE

TIMTEC-BB SBB008997

ICLA-002

1,2-Bis(trimethylsilyl)acetylene

1,2-Bis(trimethylsilyl)ethyne

1,2-ethynediylbis[trimethyl-silan

1,2-ethynediylbis[trimethyl-Silane

2,5-Disilahex-3-yne, 2,2,5,5-tetramethyl-

Acetylene, bis(trimethylsilyl)-

Bis(trimethylsilyl)ethyne

Silane, 1,2-ethynediylbis*trimethyl-

Trimethyl[(trimethylsilyl)ethynyl]silane

BIS-(TRIMETHYLSILYL)ACETYLENE, 98%BIS-(TRIMETHYLSILYL)ACETYLENE, 98%BIS-(TRIMETHYLSILYL)ACETYLENE, 98%

Bis(trimethylsilyl)acetylene(BTMSA)

Bis(trimethylsilyl)acetylene,min.97%

5-Fluoro-2-methoxy-phenylamine

Bis(trimethylsilyl)acetylene, min. 97%

Bis(triMethylsilyl)acetylene, 99% 50GR

Ethynylbistrimethylsilanel

Bis(trimethylsilyl)acetylene,99%

Silane,1,1'-(1,2-ethynediyl)bis[1,1,1-triMethyl-

Bis(trimethylsilyl)acetylene &gt

Bis(trimethylsilyl)acetylene, 98%, for synthesis

TIANFU-CHEM Bis(trimethylsilyl)acetylene 14630-40-1

3-Metbis(Trimethylsilyl) Acetylene

Double (trimethylmethsilyl) acetylene

DK079

DK080

14630-40-1

C8H18Si2

CH33SiCCSiCH33

CH33SiC8801CSiCH33

Building Blocks

Alkynes

Organic Building Blocks

Internal

Ethynylsilanes

Si-(C)4 Compounds

Acetylenes

Functionalized Acetylenes

Silicon Compounds (for Synthesis)

Si (Classes of Silicon Compounds)

Alkynes

Building Blocks

Chemical Synthesis

Internal

Organic Building Blocks

organosilicon compounds

Industrial/Fine Chemicals

Acetylenes

Ethynylsilanes

Functionalized Acetylenes

Si (Classes of Silicon Compounds)

Si-(C)4 Compounds