Molekula
p-Methoxyphenylthionophosphine sulfide dimer (Lawesson reagent)
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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
p-Methoxyphenylthionophosphine sulfide dimer, commonly known as Lawesson reagent, is a sulfurizing agent used in organic synthesis to convert carbonyl groups to thiocarbonyl groups. It is a dimeric compound with the molecular formula C14H14O2P2S4 and a molecular weight of 404.47 g/mol. Available in ambient storage conditions, it is classified as a hazardous substance with a signal word of Danger. Molekula supplies p-Methoxyphenylthionophosphine sulfide dimer (Lawesson reagent) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
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Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 4.3 (6.1) |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 22094355 |
| CAS Number | 19172-47-5 |
| IUPAC Name | 2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2lambda5,4lambda5-dithiadiphosphetane |
| EC Number | 242-855-4 |
| Molecular Formula | C14H14O2P2S4 |
| Molecular Weight | 404.47 |
| Exact Mass | 403.9352 |
| SMILES | COC1=CC=C(C=C1)P2(=S)SP(=S)(S2)C3=CC=C(C=C3)OC |
| InChIKey | CFHGBZLNZZVTAY-UHFFFAOYSA-N |
| InChI | InChI=1S/C14H14O2P2S4/c1-15-11-3-7-13(8-4-11)17(19)21-18(20,22-17)14-9-5-12(16-2)6-10-14/h3-10H,1-2H3 |
| PubChem CID | 87949 |
| UN Number | UN3134 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29314900 |
| Tariff Code | 2931498090 |
Safety & GHS
-
Flammable
GHS02
Hazard statements
- EUH029 Contact with water liberates toxic gas
- H261 In contact with water releases flammable gas
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P231+232 Handle under inert gas. Protect from moisture
- P422 Store contents under inert gas/appropriate medium
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.
Synonyms
- 1,3,2,4-Dithiadiphosphetane, 2,4-bis(4-methoxyphenyl)-, 2,4-disulfide
- 2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulfide
- 2,4-Bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulphide
- 2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane 2,4-disulfide
- 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-dithione
- 2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiaphosphetane-2,4-disulfide
- 2,4-Bis(4-methoxyphenyl)-2,4-dithioxo-1,3,2,4-dithiadiphosphetane
- Lawesson reagent
- Lawesson's reagent
- P-Anisyldithiophosphonic anhydride
Frequently asked questions
What is p-Methoxyphenylthionophosphine sulfide dimer (Lawesson reagent) used for?
It is primarily used as a sulfurizing agent in organic synthesis, particularly for converting carbonyl groups to thiocarbonyl groups.
What is the chemical formula and molecular weight of Lawesson reagent?
The formula is C14H14O2P2S4 with a molecular weight of 404.47 g/mol.
How should Lawesson reagent be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of Lawesson reagent does Molekula supply?
Molekula supplies Lawesson reagent in high purity grade suitable for research and laboratory use.
Can Molekula supply Lawesson reagent in bulk quantities?
Yes, Molekula can supply Lawesson reagent in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a purchase of Lawesson reagent?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) compliant with GHS standards.
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.