فسفریک اسید

Catalogue Number

100573

Synonyms

o-Phosphoric acid, Orthophosphoric acid

Grade

ACS,ISO,Reag. Ph Eur

HS Code

2809 20 00

Boiling point

158 °C (1013 mbar)

Density

1.71 g/cm3 (20 °C)

Melting Point

21 °C

pH value

<0.5 (100 g/l, H₂O, 20 °C)

Vapor pressure

2 hPa (20 °C)

Viscosity kinematic

30.5 mm2/s (20 °C)

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.

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

Store above +15°C.

Declaration (railroad and road) ADR, RID

UN 1805 , 8, III

Declaration (transport by air) IATA-DGR

UN 1805 , 8, III

Declaration (transport by sea) IMDG-Code

UN 1805 , 8, III, Segregation Group: 1 (Acids)

Assay (alkalimetric)

≥ 85.0 %

Identity

passes test

Appearance of solution

passes test

Colour

≤ 10 Hazen

Chloride (Cl)

≤ 2 ppm

Fluoride (F)

≤ 1 ppm

Nitrate (NO₃)

≤ 3 ppm

Phosphite and Hypophosphite (as H₃PO₃)

≤ 20 ppm

Hypophosphite, phosphite

passes test

Heavy metals (as Pb)

≤ 10 ppm

Sulphate (SO₄)

≤ 20 ppm

As (Arsenic)

≤ 0.5 ppm

Ca (Calcium)

≤ 20 ppm

Cd (Cadmium)

≤ 0.5 ppm

Co (Cobalt)

≤ 0.5 ppm

Cu (Copper)

≤ 0.5 ppm

Fe (Iron)

≤ 10 ppm

K (Potassium)

≤ 5 ppm

Mg (Magnesium)

≤ 5 ppm

Mn (Manganese)

≤ 0.5 ppm

Na (Sodium)

≤ 200 ppm

Ni (Nickel)

≤ 1.0 ppm

Pb (Lead)

≤ 0.5 ppm

Sb (Antimony)

≤ 5 ppm

Zn (Zinc)

≤ 2 ppm

Matter precipitated by ammonia

passes test

Volatile acids (as Acetic acid)

≤ 10 ppm

Substances reducing potassium permanganate (as O)

≤ 10 ppm

Insoluble matter

≤ 10 ppm