Molekula
Thionyl chloride 99.6%
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
Thionyl chloride (SOCl₂) is a highly reactive reagent primarily used in organic synthesis to convert alcohols, carboxylic acids, and amines into their corresponding chlorides, esters, or amides. It is also employed in the preparation of acid chlorides and as a dehydrating agent. Industrially, it serves as a chlorinating agent in manufacturing pharmaceuticals, pesticides, dyes and engineering plastics, and as an electrolyte in lithium batteries. This reagent, with a purity of 99.6%, has a CAS number of 7719-09-7, a molecular weight of 118.97, and requires ambient storage. It carries a **Danger** signal word due to its corrosive and toxic properties. Molekula supplies thionyl chloride 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to slightly yellow clear liquid |
| Assay | ≥99.6% |
| Sulfuryl chloride | ≤0.3% |
| Sulfur dichloride (SCl2) | ≤0.05% |
| Sulfur monochloride (S2Cl2) | ≤0.05% |
| Sulfur trioxide | ≤0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | I |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless to pale yellow or reddish liquid |
| Odour | Suffocating odor |
| Melting Point | -104.5 °C |
| Boiling Point | 76 °C |
| Density | 1.64 (relative, water = 1) |
| Vapour Pressure | 16 kPa at 25 °C |
| Refractive Index | 1.517 |
Source: PubChem CID 24386 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90033309 |
| CAS Number | 7719-09-7 |
| IUPAC Name | thionyl dichloride |
| EC Number | 231-748-8 |
| Molecular Formula | SOCl2 |
| Molecular Weight | 118.97 |
| Exact Mass | 117.9047 |
| SMILES | O=S(Cl)Cl |
| InChIKey | FYSNRJHAOHDILO-UHFFFAOYSA-N |
| InChI | InChI=1S/Cl2OS/c1-4(2)3 |
| PubChem CID | 24386 |
| UN Number | UN1836 |
| REACH Code | Y110 |
| HTS Code | 2812.17.0000 |
| Tariff Code | 2812170000 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- EUH014 Reacts violently with water
- EUH029 Contact with water liberates toxic gas
- H302 Harmful if swallowed
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
- H331 Toxic if inhaled
Precautionary statements
- P223 Keep away from any possible contact with water, because of violent reaction and possible flash fire
- 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
- 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, Russian, 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
- Dichlorosulfoxide
- SOCl2
- Sulfinyl chloride
- Sulfinyl dichloride
- Sulfur chloride oxide
- Sulfur chloride oxide (Cl2SO)
- Sulfur oxychloride
- Sulfurous dichloride
- Sulfurous oxychloride
- Thionyl dichloride
Frequently asked questions
What is thionyl chloride primarily used for?
Thionyl chloride is commonly used as a reagent for converting carboxylic acids, alcohols, and amides into the corresponding acid chlorides, amides, or alkyl chlorides in organic synthesis.
What is the chemical formula and molecular weight of thionyl chloride?
The chemical formula is **SOCl₂**, and the molecular weight is **118.97 g/mol**.
How should thionyl chloride be stored?
Store thionyl chloride in a tightly sealed container at **ambient temperature**, away from moisture and incompatible materials like water or strong oxidizers.
What purity grade is available for thionyl chloride from Molekula?
Molekula supplies thionyl chloride at a **99.6% purity grade** as standard.
Can Molekula supply thionyl chloride in bulk quantities?
Yes, Molekula can supply thionyl chloride in bulk, with quantities tailored to meet customer requirements—please contact us for specifics.
What documentation is provided with a thionyl chloride order?
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.