BS EN 899:2009 pdf free download – Chemicals used for treatment of water intended for human consumption一 Sulfuric acid.
3.1.3 Relative molecular mass
98.
3.1.4 Empirical formula
H2S04.
3.1.5 Chemical formula H2S04.
3.1.6 CAS Registry Number’)
7664-93-9
3.1.7 EINECS reference 2)
231 .639.5
3.2 Commercial forms
Sulfuric acid is available as aqueous solutions.
NOTE For some waler treatment applications, diluted acd can be used.
3.3 Physical properties
3.3.1 Appearance
The product is clear or slightly turbid, colourless liquid.
3.3.2 Density
184 g/ml for sulfuric acid concentration of mass fraction of 96 % at 20 C.
1.71 g/ml for sulfuric acid concentration of mass fraction of 78 % at 20 C.
1.18 g/ml for sulfuric acid concentration of mass fraction of 25 % at 20 C.
3.3.3 Solubility in water
At all concentrations, the product is miscible with water.
3.3.4 Vapour pressure
Below 0,00001 kPa for sulfuric acid concentration of mass fraction of 96 % at 20 DC.
Below 0,1 kPa for sulfuric acid concentration of mass fraction of 78 % at 20 °C.
Below 1.9 kPa for sulfuric acid concentration of mass fraction of 25 % at 20 C.
3.3.5 Boiling point at 100 kPa 3)
+ 310 °C for sulfphuric acid concentration of mass fraction of 96 %.
Approximately + 200 °C for sulfuric acid concentration of mass fraction of 78 %.
+ 106.5 °C for sulfuric acid concentration of mass fraction of 25 %.
3.3.6 Melting point
+ 5 °C for sulfuric acid concentration of mass fraction of 98 %.
– 10 DC for sulfuric acid concentration of mass fraction of 96 %.
– 11 °C for sulfuric acid concentration of mass fraction of 78 %.
– 22 C for sulfuric acid concentration of mass fraction of 25 %.
3.3.7 Specific heat
1,465 kJJ(kg.K) for sulfuric acid concentration of mass fraction of 96 % at 20 DC
3.3.8 Viscosity (dynamic)
22 mPas for sulfuric acid concentration of mass fraction of 96 % at 20 °C.
16,7 mPa.s for sulfuric acid concentration of mass fraction of 78 % at 20 °C.
3.3.9 Critical temperature
Not applicable.
3.3.10 Critical pressure
Not applicable.
3.3.11 Physical hardness
Not applicable.