H3O4P
97.995 g/mol
OtherDanger
Phosphoric acid
CAS7664-38-2EC231-633-2
Category
Other
Compound Class
n.a
Primary Use
Industrial acid for metal treatment and refining
Phosphoric acid is a mineral acid with the formula H3PO4, known for its crystalline structure characterized by X-ray diffraction. It is a key industrial chemical used in metal cleaning and finishing, as well as in the petroleum refining and foundry industries.
Metal cleaning and finishingPetroleum production and refiningFoundry molding and core making
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
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Chemical compound for research
Safety Reference
Danger
H314Causes severe skin burns and eye damage
H290May be corrosive to metals
H302Harmful if swallowed
H318Causes serious eye damage
H331Toxic if inhaled
H370Causes damage to organs
H402Harmful to aquatic life
H313May be harmful in contact with skin
H335May cause respiratory irritation
H332Harmful if inhaled
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Phosphoric acid (CAS 7664-38-2) is 2809.20.
HS code (international, 6-digit)
2809.20
EU CN code (8-digit)
2809 20 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
phosphoric acid
InChIKey
NBIIXXVUZAFLBC-UHFFFAOYSA-N
SMILES
OP(=O)(O)O
Synonyms (86)
- 2HP
- Y-11A06
- Phosphoric acid, United States Pharmacopeia (USP)
- Phosphoric acid, puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, 85.0-88.0%
- Acide phosphorique
- Acide phosphorique [French]
- Acido fosforico
- Acido fosforico [Italian]
- Acidum phosphoricum
- Amberphos 54
- C 134
- C 434
- Caswell No. 662
- E 338
- Evits
- FEMA No. 2900
- Fosforzuuroplossingen
- Fosforzuuroplossingen [Dutch]
- H3 P O4
- INS NO.338
- NFB Orthophosphate
- Naturasil Acne
- Naturasil Bite Relief
- Naturasil Cherry Angiomas
- ORTHOPHOSPHORIC ACID
- Ortho-phosphate
- Orthophosphate (PO43-)
- Orthophosphate(3-)
- PHOSPHORIC ACID [MART.]
- Phosphate (PO43-)
- Phosphate anion(3-)
- Phosphate ion (PO43-)
- Phosphate ion(3-)
- Phosphoric acid
- Phosphoric acid (NF)
- Phosphoric acid (aqueous)
- Phosphoric acid ion(3-)
- Phosphoric acid, 10% v/v
- Phosphoric acid, AR, 88-93%
- Phosphoric acid, Crystalline
- Phosphoric acid, LR, 88-93%
- Phosphoric acid, ortho-
- Phosphoric acid, puriss.
- Phosphoricum acidum
- Phosphoricum acidum 200C
- Phosphoricum acidum 6C
- Phosphorsaeure
- Phosphorsaeureloesungen
- Pre-Sept Activator
- Sonac
- Vococid
- Wc-reiniger
- White phosphoric acid
- hydron;phosphate
- o-Phosphoric acid
- phosphoric cid
- tetraoxophosphoric acid
- trihydroxidooxidophosphorus
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