Structure
Identifiers
CAS:
7664-38-2IUPAC name: phosphoric acid
Formula:
H3O4PMW: 97.995 g/mol
Structural identifiers
SMILES: OP(=O)(O)O
InChIKey: NBIIXXVUZAFLBC-UHFFFAOYSA-N
InChI: InChI=1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
Specifications
Commercial
Inventory: to order
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Computed descriptors aggregated from PubChem for CAS 7664-38-2.
| XLogP | -2.1 |
|---|---|
| Complexity | 49 |
| Exact mass | 97.97689557 g/mol |
| Formal charge | 0 |
| Heavy atom count | 5 |
| Monoisotopic mass | 97.97689557 g/mol |
| H-bond donor count | 3 |
| Rotatable bond count | 0 |
| H-bond acceptor count | 4 |
| Topological polar surface area (TPSA) | 77.8 Ų |
China regulatory compliance
Not listed in hazardous / restricted catalogues
Sourcing & suppliers — phosphoric acid
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Who supplies phosphoric acid in China?
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Which suppliers provide a COA or analysis report for phosphoric acid?
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Frequently asked questions
Curated by ChemExact's editorial team and reviewed by chemistry and API procurement specialists. Each factual claim is traceable to the cross-source citation graph at the bottom of the page.
What is phosphoric acid (CAS 7664-38-2)?
phosphoric acid is a chemical compound with molecular formula H3O4P and molecular weight ≈ 98.00 g/mol. Its CAS Registry Number is 7664-38-2. Phosphoric acid is a phosphorus oxoacid that consists of one oxo and three hydroxy groups joined covalently to a central phosphorus atom. It has a role as a NMR chemical shift reference compound, a fertilizer, a solvent, a human metabolite and an algal metabolite. It is a conjugate acid of a phosphate ion and a dihydrogenphosphate.
What chemical does CAS 7664-38-2 refer to?
CAS Registry Number 7664-38-2 refers to phosphoric acid, molecular formula H3O4P, molecular weight ≈ 98.00 g/mol. The CAS number is verifiable on PubChem, CAS Common Chemistry and ECHA. To source phosphoric acid, submit an RFQ on this page to be matched with ChemExact's verified supplier network, with batch COAs.
What is the molecular formula and weight of phosphoric acid (CAS 7664-38-2)?
The molecular formula of phosphoric acid is H3O4P, and the molecular weight is 98.00 g/mol. This data has been cross-verified against PubChem, ChEMBL and CAS Common Chemistry.
What are the SMILES and InChIKey of phosphoric acid?
The canonical SMILES of phosphoric acid is `OP(=O)(O)O`, and the InChIKey is `NBIIXXVUZAFLBC-UHFFFAOYSA-N`. These international identifiers are reusable in PubChem, ChemDraw, RDKit and most cheminformatics toolchains.
What are the common synonyms of phosphoric acid?
Common synonyms of phosphoric acid include: Phosphoric acid, 7664-38-2, ORTHOPHOSPHORIC ACID, o-Phosphoric acid, Wc-reiniger, Acidum phosphoricum, Sonac, Phosphorsaeure — 20 synonyms in total. The full list (sourced from PubChem) is available in the page header under "Show synonyms".
What is the current price of phosphoric acid (CAS 7664-38-2)?
ChemExact does not publish public price lists for phosphoric acid. No verified supplier has linked this SKU yet — submit an RFQ below and our BD team will return 3+ comparative quotes within 48–72 hours, each with batch traceability and a COA. For background market context only (non-binding), industry bulletins such as ICIS or national commodity indices may be consulted independently.
How has phosphoric acid price trended recently?
phosphoric acid pricing follows upstream feedstocks, export demand, and plant turnaround cycles. ChemExact does not quote spot indices on this page. For a procurement decision, submit an RFQ — suppliers respond with current lot pricing and lead time. Independent market bulletins (ICIS, national commodity indices) may be used only as non-binding background reference.
Who are the major manufacturers of phosphoric acid in China?
China-based manufacturers of phosphoric acid (CAS 7664-38-2) are matched on demand by the ChemExact business team. Submit an RFQ or contact bd@chemexact.com — a BD advisor will shortlist candidates from regulated directories (e.g. China MEM hazardous-chemicals registration at https://whpdj.mem.gov.cn/) with full provenance on each dossier. Supplier discovery is handled through ChemExact's verified network, not third-party marketplaces.
Which suppliers in East / North / South China stock phosphoric acid?
Regional supply of phosphoric acid (CAS 7664-38-2) is matched on demand through ChemExact's own verified network. Submit an RFQ stating your target region (East / North / South China), or reach the ChemExact business team at bd@chemexact.com — a BD advisor will match verified producers from regulated enterprise registries and return comparable quotes with COAs. When ChemExact's geo-browse directory is enabled, city-level supplier pages list credentials and last review dates.
Who are the largest global producers of phosphoric acid?
International supply of phosphoric acid (CAS 7664-38-2) is arranged by the ChemExact business team based on export credentials. Submit an RFQ or contact bd@chemexact.com — a BD advisor will match qualified exporters and return batch COAs, trade terms, and Incoterms. For regulatory due diligence, consult ECHA REACH (CAS 7664-38-2), US EPA CompTox, or Japan NITE — these are compliance references, not procurement marketplaces.
What grades of phosphoric acid are commercially available?
phosphoric acid is typically supplied in the following grades: Industrial / Technical (≥ 99%, bulk feedstock), Reagent (AR/CP/GR, ≥ 99.5%, lab analytics), HPLC / GC (≥ 99.9%, chromatography & spectroscopy). Grade-specific specs are confirmed via the supplier's SDS and CoA. ChemExact lets verified suppliers attach hash-validated CoA/SDS files on their brand product pages.
Where can I download the SDS / MSDS for phosphoric acid (CAS 7664-38-2)?
Authoritative SDS sources: ① PubChem 'Safety and Hazards' section — https://pubchem.ncbi.nlm.nih.gov/compound/1004; ② US NIH Hazardous Substances Data Bank (HSDB); ③ ECHA REACH dossier; ④ Supplier-attached SDS on verified ChemExact brand pages. ChemExact does not host SDS files directly (to avoid version drift); all SDS links route to source.
Related research papers
Open-access publications referencing phosphoric acid (CAS 7664-38-2), sourced from OpenAlex.
PROTEIN MEASUREMENT WITH THE FOLIN PHENOL REAGENT
Synthesis of Transportation Fuels from Biomass: Chemistry, Catalysts, and Engineering
Lange's handbook of chemistry
Surfactants and interfacial phenomena
Determination of malonaldehyde precursor in tissues by thiobarbituric acid test
Perfluoroalkyl and polyfluoroalkyl substances in the environment: Terminology, classification, and origins
Authoritative external references
Every chemistry property, compliance flag and literature claim on this page is traceable to the authoritative external sources below. Click any link to verify on the publishing institution's original page.
- NIST WebBook · Phosphoric Acid ↗ — NIST · Standard Reference Data Program
- OpenAlex papers ↗ — OurResearch · OpenAlex
- ChEMBL · CHEMBL1187 ↗ — EMBL-EBI · ChEMBL
- China compliance (IECSC) ↗ — MEE · China IECSC
- PubChem PUG-View · CID 1004 ↗ — National Library of Medicine · PubChem
- PubChem · CID 1004 ↗ — National Library of Medicine · PubChem
Content & data statement.
Commercial information on this page (CAS, HS, EC, purity grade, indicative price band, lead time, inventory status,
REACH and FDA flags) is captured from supplier-controlled documents by the ChemExact editorial desk and reviewed
on a recurring cycle. Chemistry data — structures, synonyms, physico-chemical properties, hazard classifications and
the cited literature — is reconciled against internationally recognised authorities (including but not limited to
PubChem, CAS Common Chemistry, ECHA, China MEM, ChEMBL and OpenAlex) and cross-checked by our editors.
Disclaimer: This page is intended as a procurement-side technical reference and does not constitute legal, regulatory, or medical advice. Lot-level conformity is determined by the supplier-signed CoA and SDS. Transport, storage and handling must follow the applicable jurisdictional regulations and product SDS. If you spot a discrepancy with an authoritative source, please contact our editorial team — we review correction requests within five business days.
Disclaimer: This page is intended as a procurement-side technical reference and does not constitute legal, regulatory, or medical advice. Lot-level conformity is determined by the supplier-signed CoA and SDS. Transport, storage and handling must follow the applicable jurisdictional regulations and product SDS. If you spot a discrepancy with an authoritative source, please contact our editorial team — we review correction requests within five business days.
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