Molekula
Phosphoric acid for HPLC
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
Phosphoric acid for HPLC is a high-purity analytical reagent used primarily for mobile phase preparation in high-performance liquid chromatography (HPLC) applications. It ensures accurate pH adjustment and consistent chromatographic performance. More broadly, phosphoric acid is used in manufacturing phosphate fertilizers and detergents, as a wet etchant in semiconductor fabrication, and for rustproofing and cleaning metals. This product has a CAS number of 7664-38-2, molecular formula H3PO4, and a molecular weight of 98.00 g/mol. It is stored at ambient conditions and carries a signal word of "Danger." Molekula supplies Phosphoric acid for HPLC 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 | Clear colourless viscous liquid |
| Density | 1.70 kg/l (Approx.) |
| UV (0.1% aqueous) | 254nm >99% |
| UV (1M solution) 210 nm | A:=≤0.07 |
| UV (1M solution) 220 nm | A:=≤0.05 |
| UV (1M solution) 230 nm | A:=≤0.04 |
| UV (1M solution) 250 nm | A:=≤0.02 |
| UV (1M solution) 500nm | A:=≤0.02 |
| Gradient analysis | pass test |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless viscous liquid |
| Odour | Odorless |
| Melting Point | 42.4 °C |
| Boiling Point | 407 °C |
| Solubility (other solvents) | Soluble in water, alcohol; soluble in 8 volumes of 3:1 ether:alcohol mixture |
| Vapour Pressure | 0.29 kPa at 20 °C |
| Refractive Index | 1.34203 |
Source: PubChem CID 1004 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90033485 |
| CAS Number | 7664-38-2 |
| IUPAC Name | phosphoric acid |
| EC Number | 231-633-2 |
| Molecular Formula | H3PO4 |
| Molecular Weight | 98.00 |
| Exact Mass | 97.9769 |
| SMILES | OP(=O)(O)O |
| InChIKey | NBIIXXVUZAFLBC-UHFFFAOYSA-N |
| InChI | InChI=1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4) |
| PubChem CID | 1004 |
| UN Number | UN1805 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2809.20.00.20 |
| Tariff Code | 2809200000 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H290 May be corrosive to metals
- H302 Harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
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
- 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 phosphoric acid (HPLC grade) commonly used for?
HPLC-grade phosphoric acid is primarily used as a mobile phase modifier in high-performance liquid chromatography (HPLC) to adjust pH, improve peak symmetry, and enhance separation efficiency in analytical applications.
What is the chemical formula and molecular weight of phosphoric acid?
The chemical formula is **H₃PO₄**, and the molecular weight is **98.00 g/mol**.
How should phosphoric acid (HPLC grade) be stored?
Store at **ambient temperature** in a tightly sealed container, away from incompatible substances and moisture, following standard laboratory chemical storage practices.
What purity grade is available for phosphoric acid from Molekula?
Molekula supplies **HPLC-grade phosphoric acid**, meeting stringent purity requirements for chromatographic applications (typically ≥99.9% purity).
Can Molekula supply phosphoric acid in bulk quantities?
Yes, Molekula can supply phosphoric acid in bulk, with packaging options tailored to meet your volume requirements—contact us for specific inquiries.
What documentation comes with an order of phosphoric acid?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and a **packing list** detailing batch-specific information and compliance with HPLC-grade specifications.
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.