Phosphoric Acid (85%) (E338)

Origin: China, Vietnam
CAS Number: 7664-38-2
HS Code: 2809.20.32

IUPAC Name: phosphoric acid
Molecular Formula: H3O4P
Synonyms & Trade Names: Phosphoric acid; 7664-38-2; ORTHOPHOSPHORIC ACID; o-Phosphoric acid; Wc-reiniger; Sonac; Acidum phosphoricum; Phosphorsaeure; Evits; Acide phosphorique; Phosphoricum acidum; Acido fosforico; Phosphorsaeureloesungen; FEMA No. 2900; Fosforzuuroplossingen; Vococid; White phosphoric acid; Amberphos 54; DTXSID5024263; NSC-80804
Purity / Assay (%): 53.1%
Physical Form: Crystal
Appearance / Color: Unstable orthorhombic crystals or clear syrupy liquid

Odor: Odorless
Melting Point (°C): 42.4000
Boiling Point (°C): 407 °C
Density (g/cm³): 1.9000
pH: pH = 1.5 (0.1 N aqueous solution)
Solubility in Water: Miscible (NIOSH, 2024)
Signal Word: Danger
UN Number: 1805, 3453
GHS Hazard Class: Skin corrosion/irritation, Corrosive to Metals, Acute toxicity, oral, Serious eye damage/eye irritation, Acute toxicity, inhalation, Specific target organ toxicity, single exposure, Acute toxicity, dermal, Specific target organ toxicity, single exposure; Respiratory tract irritation
H-Statements: H314, H332
P-Statements: P260
Storage Conditions: Store in cool, dry, well-ventilated location. Separate from alkalies and most metals.
Industry Usage Tags: Processing aids not otherwise specified

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Technical Document

Phosphoric Acid Phosphoric acid is a mineral acid derived from phosphate rock, essential for providing sharp acidity and phosphate nutrition in formulations. In the food industry, it delivers clean tartness in beverages, acts as a pH regulator in processed foods, and serves as a precursor for leavening phosphates while contributing phosphorus for fortification.