Molekula
1-Propylphosphonic acid cyclic anhydride, 50% Ethyl Acetate Solution
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
1-Propylphosphonic acid cyclic anhydride, 50% ethyl acetate solution is a reactive phosphonic acid anhydride used in organic synthesis, particularly as a dehydrating agent that activates carboxylic acids for amide, peptide and ester formation, for dehydrations such as nitrile synthesis, and as a coupling reagent. It is a colorless to pale yellow liquid with a strong odor. CAS: 68957-94-8, molecular formula: P3O6(CH2CH2CH3)3, molecular weight: 318.18 g/mol. Store at ambient temperature. Hazardous: signal word Danger. Molekula supplies 1-Propylphosphonic acid cyclic anhydride, 50% Ethyl Acetate Solution 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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Specifications
| Property | Value |
|---|---|
| Appearance | clear colourless to amber |
| Assay | ≥50% w/w solids |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | -4 °C |
| Transport Class | 3 (8) |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90031587 |
| CAS Number | 68957-94-8 |
| Molecular Formula | P3O6(CH2CH2CH3)3 |
| Molecular Weight | 318.18 |
| SMILES | CCCP1(=O)OP(=O)(OP(=O)(O1)CCC)CCC |
| UN Number | UN2924 |
| REACH Code | Y110 |
| HTS Code | 2931.46.0000 |
| Tariff Code | 2931460000 |
Safety & GHS
-
Flammable
GHS02
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H225 Highly flammable liquid and vapour
- H290 May be corrosive to metals
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H336 May cause drowsiness or dizziness
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
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
No alternate names recorded for this product.
Frequently asked questions
What is 1-Propylphosphonic acid cyclic anhydride, 50% Ethyl Acetate Solution used for?
It is primarily used as a reagent in organic synthesis, particularly as a coupling and dehydrating reagent that activates carboxylic acids for amide and peptide bond formation and esterification, and for dehydrations such as converting amides to nitriles. It is a stoichiometric reagent, and its water-soluble propylphosphonic acid byproducts are removed by aqueous workup.
What is the chemical formula and molecular weight?
The formula is P3O6(CH2CH2CH3)3 with a molecular weight of 318.18 g/mol.
How should this product be stored?
Store at ambient temperature, away from moisture and incompatible materials, as specified by the safety data sheet.
What grade is available?
This product is available as a 50% solution in ethyl acetate, suitable for laboratory and industrial use.
Can Molekula supply this in bulk?
Yes, Molekula can supply this product in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with the 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.