Molekula
Metaphosphoric acid
Metaphosphoric acid is a polymeric inorganic acid used in catalysis, polymerization, and as a reagent in organic synthesis. It appears as a white, hygroscopic solid and is highly corrosive. Available in powder form with a molecular formula of (HPO3)n, a molecular weight of 239.94 g/mol, and stored at ambient temperatures. It carries a Danger signal word due to its corrosive nature. Molekula supplies Metaphosphoric acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Metaphosphoric acid is a polymeric inorganic acid used in catalysis, polymerization, and as a reagent in organic synthesis. It appears as a white, hygroscopic solid and is highly corrosive. Available in powder form with a molecular formula of (HPO3)n, a molecular weight of 239.94 g/mol, and stored at ambient temperatures. It carries a Danger signal word due to its corrosive nature. Molekula supplies Metaphosphoric acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourless to white crystals and/or chunks |
| Heavy metals | ≤0.005 % |
| Chloride (Cl) | ≤0.001 % |
| Purity (Titration by NaOH) | 33.5 to 36.5 % (HPO3) |
| Iron (Fe) | ≤0.005 % |
| Sulphate (SO4) | ≤0.005 % |
| Arsenic (As) | ≤1 ppm |
| Content of stabilizer | 57.0 to 63.0 % NaPO3 |
| Nitrate (NO3) | ≤0.001 % |
| KMnO4-reducing substance | ≤0.02 % (as H3PO3) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Shelf Life | 60 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 37267-86-0 |
| Molecular Formula | (HPO3)n |
| Molecular Weight | 239.94 |
| SMILES | OP(=O)=O |
| EC / UN Number | 3260 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28092000 |
| Tariff Code | 2809200000 |
Safety & GHS
-
Compressed Gas
GHS04
Hazard statements
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
- H335 May cause respiratory irritation
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
- 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
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 metaphosphoric acid used for?
Metaphosphoric acid is used as a catalyst in organic synthesis and as a reagent in the production of phosphates and other phosphorus compounds.
What is the chemical formula and molecular weight of metaphosphoric acid?
The formula is (HPO3)n and the molecular weight is 239.94 g/mol.
How should metaphosphoric acid be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of metaphosphoric acid does Molekula supply?
Molekula supplies metaphosphoric acid in reagent grade.
Can Molekula supply metaphosphoric acid in bulk?
Yes, Molekula can supply metaphosphoric acid in bulk quantities upon request.
What documentation comes with a purchase of metaphosphoric acid?
Each order includes a Certificate of Analysis 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.