Molekula
Diethylaminosulfur trifluoride (DAST)
Diethylaminosulfur trifluoride (DAST) is a fluorinating agent used in organic synthesis for converting alcohols to alkyl fluorides and other functional group transformations. It is a colorless to pale yellow liquid with a molecular formula of (C2H5)2NSF3, a molecular weight of 161.19 g/mol, and a storage requirement of 2 to 8 °C. It is classified as a hazardous substance with a signal word of Danger. Molekula supplies DAST from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Diethylaminosulfur trifluoride (DAST) is a fluorinating agent used in organic synthesis for converting alcohols to alkyl fluorides and other functional group transformations. It is a colorless to pale yellow liquid with a molecular formula of (C2H5)2NSF3, a molecular weight of 161.19 g/mol, and a storage requirement of 2 to 8 °C. It is classified as a hazardous substance with a signal word of Danger. Molekula supplies DAST from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to yellow liquid |
| Purity | ≥ 95.0% |
| Solution clarity | Forms a clear colourless to pale yellow solution in dry benzene or dry chloroform, no particles |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 23 C |
| Transport Class | 8 (3) |
| Packing Group | I |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 38078-09-0 |
| Molecular Formula | (C2H5)2NSF3 |
| Molecular Weight | 161.19 |
| SMILES | CCN(CC)S(F)(F)F |
| EC / UN Number | 2920 |
| REACH Code | Y110 |
| HTS Code | 2929.90.5018 |
| Tariff Code | 2929909090 |
Safety & GHS
-
Explosive
GHS01
-
Oxidizing
GHS03
-
Compressed Gas
GHS04
Hazard statements
- EUH014 Reacts violently with water
- EUH029 Contact with water liberates toxic gas
- H226 Flammable liquid and vapour
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Diethylaminosulfur trifluoride (DAST) used for?
DAST is primarily used as a fluorinating agent in organic synthesis, particularly for converting alcohols to alkyl fluorides.
What is the chemical formula and molecular weight of DAST?
The formula is (C2H5)2NSF3 and the molecular weight is 161.19 g/mol.
How should DAST be stored?
DAST must be stored at temperatures between 2 to 8 °C and protected from moisture and light.
What grade of DAST does Molekula supply?
Molekula supplies DAST in high-purity grade suitable for laboratory and industrial research applications.
Can Molekula supply DAST in bulk quantities?
Yes, Molekula can supply DAST in bulk quantities—please contact our sales team for volume pricing and availability.
What documentation comes with a DAST order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.