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
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)
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
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.
N-Bromosuccinimide Price
- Product number
- 187437
- Product name
- Bis(trimethylsilyl)acetylene
- Purity
- 99%
- Packaging
- 10g
- Price
- $65.6
- Updated
- 2024/03/01
- Product number
- 187437
- Product name
- Bis(trimethylsilyl)acetylene
- Purity
- 99%
- Packaging
- 50g
- Price
- $230
- Updated
- 2024/03/01
- Product number
- B1090
- Product name
- Bis(trimethylsilyl)acetylene
- Purity
- >97.0%(GC)
- Packaging
- 5g
- Price
- $87
- Updated
- 2024/03/01
- Product number
- B1090
- Product name
- Bis(trimethylsilyl)acetylene
- Purity
- >97.0%(GC)
- Packaging
- 25g
- Price
- $261
- Updated
- 2024/03/01
- Product number
- A11960
- Product name
- Bis(trimethylsilyl)acetylene, 99%
- Packaging
- 10g
- Price
- $52.65
- Updated
- 2024/03/01
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
Preparation Products
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View Lastest Price from Bis(trimethylsilyl)acetylene manufacturers
- 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
- 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
- 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