Description
Catalogue Number	100565
Synonyms	Orthophosphoric acid, o-Phosphoric acid
Description	ortho-Phosphoric acid 99%

 

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

 

Physicochemical Information
Density	1.84 g/cm3 (38 °C)
Melting Point	41.1 °C
pH value	<0.5 (100 g/l, H₂O, 20 °C)
Vapor pressure	0.04 hPa (20 °C)
Solubility	750 - 850 g/l

 

 

Toxicological Information
LD 50 dermal	LD50 Rabbit 2740 mg/kg

 

 

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H290: May be corrosive to metals. 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. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word	Danger
Storage class	8B Non-combustible, corrosive hazardous materials
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
Hazard Symbols	Corrosive
Categories of danger	corrosive
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).

 

 

 

Storage and Shipping Information
Storage	Store below +30°C.

 

 

 

Transport Information
Declaration (railroad and road) ADR, RID	UN 3453 , 8, III
Declaration (transport by air) IATA-DGR	UN 3453 , 8, III
Declaration (transport by sea) IMDG-Code	UN 3453 , 8, III, Segregation Group: 1 (Acids)

 

Specifications
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