Appearance  

Clear colourless to pale tan liquid, free from foreign matter.

Odour

Slight to none

Active Acid (%)

59.5 - 61.0

pH (1% solution at 20°C) w/v

2.0 max

pH (1% solution at 20°C) v/v

2.5 max

Sequestrant value (mgCaCO₃/g )

400 min

Phosphorous acid as H₃PO₃         phosphoric acid as H₃PO₄ (%)

4.0 max

Orthophosphate as PO₄^3- (%)

0.5 max

Viscosity at 25°C (mm²/s)

35.0 - 41.0

Specific Gravity at 20/20°C

1.440 - 1.455

Colour (APHA)

80 max

Cu content, as Cu (ppm)

1.0 max

Co content, as Co (ppm)

1.0 max

Ti content, as Ti (ppm)

1.0 max

Iron, as Fe (ppm)

10.0 max

Pb content, as Pb (ppm)

10.0 max

Chloride (as Cl^-, ppm)

25.0 max