Orthophosphoric acid 33% solution [7664-38-2]
Orthophosphoric acid is used as a food additive, intermediate, laboratory reagent, descaling solvent, corrosion inhibitor, pH adjusting agent, degreasing agent, fertilizers.
Physical description. Clear, colorless liquid
Lead (Pb) ≤ 0.5 ppm
Arsenic (As) ≤ 0.5 ppm
Fluorine (F) ≤ 10 ppm
Cadmium (Cd) ≤ 0.2 ppm
Mercury (Hg) ≤ 0.05ppm
Heavy metals (as Pb) ≤ 5 ppm
Iron (Fe) ≤ 5 ppm
Copper (Cu) ≤ 1ppm
Nickel (Ni) ≤ 1ppm
Chlorine (Cl) ≤ 10 ppm
Sulphate (SO4) ≤ 350 ppm
Volatile acids ≤ 10 ppm (as acetic acid)
Nitrates ≤ 5 ppm (as NaNO3)
Density 1.685 – 1.697 g / cm³ (20 ° C)
Labels for hazardous chemicals and mixtures that are part of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The pictograms recommended by GHS have the shape of a square set on the top. They should contain a black symbol on a white background with a red border.
Priority rules to be observed in connection with the labeling of a substance:
– the skull and crossbones, the exclamation mark pictogram should not be added.
– corrosive effects, the exclamation mark pictogram should not be added if it concerns eye or skin irritation.
– health hazard determining respiratory sensitization, the exclamation mark pictogram should not be added if it concerns skin sensitization or irritation to eyes or skin.
Source: GHS pictograms