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LC4695 ortho-Phosphoric acid 99%

cryst. for analysis EMSURE


Order number Packaging Quantity Price €
AC31695 Plastic bottle 500 g 31.5


Product information
Synonyms Orthophosphoric acid
Hill Formula H3O4P
Chemical formula H3PO4
HS Code 2809 20 00
EC number 231-633-2
Molar mass 97.99 g/mol
EC index number 015-011-00-6
CAS number 7664-38-2


Chemical and physical data
Solubility 750 – 850 g/l (20 °C)
Melting point 42 °C
Molar mass 97.99 g/mol
Density 1.87 g/cm3 (25 °C)
pH value 1 (1 g/l, H2O, 20 °C)
Boiling point 213 °C (1013 hPa)
Vapor pressure 2 hPa (20 °C)


Safety information according to GHS
Hazard Statement(s) H314: Causes severe skin burns and eye damage.
Precautionary Statement(s) P280: Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)
Storage class Non combustible, corrosive substances
WGK WGK 1 slightly water endangering
Disposal 12
Inorganic acids and anhydrides thereof should first be diluted or hydrolyzed by stirring carefully into ice water and then neutralized (protective gloves, fume cupboard!) with sodium hydroxide solution (Cat. No. 105587). Before filling into container D, check the pH with pH universal indicator strips (Cat. No. 109535). Fuming sulfuric acid should be carefully stirred dropwise into 40 % sulfuric acid (Cat. No. 109286). Ensure that plenty of ice is available for cooling! When sufficiently cool, treat the highly concentrated sulfuric acid as described above. Analogous to this procedure, other anhydrides can be converted into their corresponding acids. Acid gases (e.g. hydrogen halide, chlorine, phosgene, sulfur dioxide) can be introduced into dilute sodium hydroxide solution and after neutralization disposed of in container D.


Safety information
R Phrase R 34
Causes burns.
S Phrase S 26-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger corrosive
Hazard Symbol Corrosive


Transport information
Declaration (transport by sea) IMDG-Code UN 3453 PHOSPHORIC ACID, SOLID, 8, III, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 3453 PHOSPHORIC ACID, SOLID, 8, III


Toxicological data
LD 50 oral LD50 rat 1530 mg/kg
LD 50 dermal LD50 rabbit 2740 mg/kg


Assay (acidimetric) ≥ 99 %
Identity passes test
Chloride (Cl) ≤ 2 ppm
Nitrate (NO3) ≤ 2 ppm
Phosphite and Hypophosphite (as H3PO3) ≤ 500 ppm
Fluoride (F) ≤ 0.5 ppm
As (Arsenic) ≤ 1 ppm
Ca (Calcium) ≤ 20 ppm
Cd (Cadmium) ≤ 1 ppm
Co (Cobalt) ≤ 1 ppm
Cu (Copper) ≤ 1 ppm
Fe (Iron) ≤ 10 ppm
K (Potassium) ≤ 5 ppm
Mg (Magnesium) ≤ 1 ppm
Mn (Manganese) ≤ 1 ppm
Na (Sodium) ≤ 50 ppm
Ni (Nickel) ≤ 1 ppm
Pb (Lead) ≤ 1 ppm
Sb (Antimony) ≤ 1 ppm
Zn (Zinc) ≤ 1 ppm
Volatile acids (as CH3COOH) ≤ 20 ppm
Substances reducing potassium permanganate (as O) ≤ 20 ppm