Diethylaminosulfur trifluoride, 95%

Description

CAS: 38078-09-0 | C4H10F3NS | 161.186 g/mol

Diethylaminosulfur trifluoride (DAST) is used as a precursor to prepare 2,6-dimethoxybenzoyl fluoride and 2-thiazolines. It is a useful fluorinating agent used for a variety of compounds including alcohols, thioethers, alkenols and cyanohydrins. It also serves as a catalyst for Friedel-Crafts allylation reaction using tertiary cyclopropyl silyl ethers and in the rearrangement of homoallylic alcohols to unsaturated aldehydes. It plays an important role for gem difluorination of ketopipecolinic acids.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
Diethylaminosulfur trifluoride (DAST) is used as a precursor to prepare 2,6-dimethoxybenzoyl fluoride and 2-thiazolines. It is a useful fluorinating agent used for a variety of compounds including alcohols, thioethers, alkenols and cyanohydrins. It also serves as a catalyst for Friedel-Crafts allylation reaction using tertiary cyclopropyl silyl ethers and in the rearrangement of homoallylic alcohols to unsaturated aldehydes. It plays an important role for gem difluorination of ketopipecolinic acids.

Solubility
Miscible with water, ethanol, benzene and acetonitrile.

Notes
Store in cool place. Moisture sensitive. It reacts with water and ethanol. Incompatible with water, acids and bases.

Specifications

Chemical Identifiers

• CAS: 38078-09-0
• Molecular Formula: C4H10F3NS
• Molecular Weight (g/mol): 161.186
• MDL Number: MFCD00000363
• InChI Key: CSJLBAMHHLJAAS-UHFFFAOYSA-N
• Synonym: diethylaminosulfur trifluoride, dast, diethylaminosulphur trifluoride, diethylamino sulfur trifluoride, diethylaminosulfurtrifluoride, diethylaminosulphurtrifluoride, diethylamino sulphur trifluoride, unii-78622bv6ij, sulfur, n-ethylethanaminato trifluoro-, t-4
• PubChem CID: 123472
• IUPAC Name: N-ethyl-N-(trifluoro-$l^{4}-sulfanyl)ethanamine
• SMILES: CCN(CC)S(F)(F)F

• Density: 1.23
• Boiling Point: 30°C to 32°C (3 mmHg)
• Flash Point: 23°C (73°F)
• Refractive Index: 1.4115
• Linear Formula: (CH₃CH₂)₂NSF₃
• Quantity: 5 g
• UN Number: UN2920
• Beilstein: 1849066
• Sensitivity: Moisture sensitive
• Solubility Information: Miscible with water,ethanol,benzene and acetonitrile.
• Formula Weight: 161.19
• Percent Purity: 95%
• Chemical Name or Material: Diethylaminosulfur trifluoride

Safety and Handling

Hazard Category	H226-H302+H312+H332-H314-H335
Hazard Statement	GHS H Statement H331-H314-H318-H226 Toxic if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage. Flammable liquid and vapor.
Precautionary Statement	P210-P233-P235-P240-P241-P242-P243-P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P370+P378q-P501c
DOTInformation	Transport Hazard Class: 8; Packing Group: I; Proper Shipping Name: CORROSIVE LIQUIDS, FLAMMABLE, N.O.S.
EINECSNumber	253-771-2
TSCA	No
Recommended Storage	Keep cold; Store under Nitrogen

SDS

RUO – Research Use Only