Molekula
Diethyl Sulphate, 99% Ps
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Diethyl sulfate is a highly reactive alkylating agent primarily used in organic synthesis for esterification, sulfonation, and the preparation of ethers and pharmaceutical intermediates. It serves as a key reagent in laboratory research and industrial production processes requiring precise chemical modifications. CAS 64-67-5, molecular formula (C2H5O)2SO2, molecular weight 154.18. Store at ambient conditions. Signal word: Danger. Molekula supplies Diethyl Sulphate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — $56.10 per pack
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourles oily liquid |
| Density | 1.170-1.180g/ml (20°C) |
| Water | ≤0.1% |
| Assay | ≥99.50% |
| Chroma | ≤20 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 104 °C |
| Transport Class | 6.1 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | Peppermint odor |
| Melting Point | -25 °C |
| Boiling Point | 209.5 °C with decomposition |
| Density | 1.2 (relative, water = 1) |
| Vapour Pressure | 20 Pa at 20 °C |
| Refractive Index | 1.40037 |
| log P (octanol/water) | 1.14 |
Source: PubChem CID 6163 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 65617544 |
| CAS Number | 64-67-5 |
| IUPAC Name | diethyl sulfate |
| EC Number | 200-589-6 |
| Molecular Formula | (C2H5O)2SO2 |
| Molecular Weight | 154.18 |
| Exact Mass | 154.03 |
| SMILES | CCOS(=O)(=O)OCC |
| InChIKey | DENRZWYUOJLTMF-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H10O4S/c1-3-7-9(5,6)8-4-2/h3-4H2,1-2H3 |
| PubChem CID | 6163 |
| UN Number | UN1594 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2920.90.51.00 |
| Tariff Code | 2920901090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H340 May cause genetic defects
- H350 May cause cancer
Precautionary statements
- 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
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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.
Synonyms
- Diaethylsulfat
- Diethyl Monosulfate
- Diethyl sulfate
- Diethyl tetraoxosulfate
- Diethylester kyseliny sirove
- ethyl ethoxysulfonate
- Ethyl sulfate (Et2SO4)
- Sufuric Acid Diethyl Ester
- Sulfuric acid, diethyl ester
Frequently asked questions
What is Diethyl Sulphate (99% PS) commonly used for?
Diethyl Sulphate is primarily used as an alkylating agent in organic synthesis, including the production of pharmaceuticals, dyes, and agrochemicals.
What is the chemical formula and molecular weight of Diethyl Sulphate?
The chemical formula is **(C₂H₅O)₂SO₂**, and the molecular weight is **154.18 g/mol**.
How should Diethyl Sulphate be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture, heat, and incompatible substances.
What purity grade is available for Diethyl Sulphate from Molekula?
Molekula supplies Diethyl Sulphate at **99% purity (PS)**.
Can Molekula supply Diethyl Sulphate in bulk quantities?
Yes, bulk quantities are available upon request—please contact our sales team for specific packaging options.
What documentation comes with an order of Diethyl Sulphate?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
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.