BS EN 1204-2005 pdf download.Chemicals used for treatment of water intended for human consumption Calcium tetrahydrogen bis(orthophosphate).
3 Description
3.1 Identification
3.1.1 Chemical name
Calcium tetrahydrogen bis(orthophosphate),
3.1.2 Synonym or common name
Monocalcium phosphate
3.1.3 Relative molecular mass
234.0.
3.1.4 Empirical formula
Ca(H2P04)2.
3.1.5 Chemical formula Ca(H2P04)2.
3.1.6 CAS Registry NumberU
7758-11-4
31.7 EINECS reference2)
231-837-1
3.2 Commercial form
The calcium tetrahydrogen bis(orthophosphate) is a powder
3.3 Physical properties
3.3.1 Appearance
The product is a white powder.
3.3.2 Density
The bulk density of the product vanes from 500 gfdm3 to 800 g!dm3.
3.3.3 Solubllity In water
The solubility in water is approximately 0.005 g/l at 25 C.
1) Chemical Abstrats Service Registry Number.
2) European Iriventofy of Existing Commercial Chemical Substances,
3.3.4 Vapour pressure
Not applicable.
3.3.5 Boiling point at 100 kPa3)
Not applicable.
3.3.6 Melting point
1 000 C.
3.3.7 Specific heat
Not known.
3.3.8 Viscosity (dynamic)
Not applicable.
3.3.9 Critical temperature
Not applicable.
3.3.10 Critical pressure
Not applicable.
3.3.11 Physical hardness
Not applicable
3.4 Chemical properties
The suspensions of calcium tetrahydrogen bis(orthophosphate) have acidic reactions.
The pH value of a suspension of a mass fraction of 10 % is approximately 3.
5 Test methods
5.1 Sampling
Observe tne recommendations 0* iU 3103 and take account ot iu ouo. i-’repare me iaooratory sampies;
required by the relevant procedure described in ISO 8213.
5.2 Analyses
5.2.1 Main product
The determination of the concentration of phosphate (P205) is carried out according to ISO 3357.
The determination of the concentration of calcium oxide (CaO) is carried out according to ISO 5373.
5.2.2 ImpurIties
5.2.2.1 Sulfate
The sulfate (5042) content shall be determined in accordance with ISO 2997.
5.2.2.2 Fluoride
The fluoride (F-) content shall be determined in accordance with ISO 336O
5.2.3 Chemical parameters
NOTE When prepanng the calcium tetrahydrogen b.s(orthophosphate) for analysis, it is important to ensure that the chemical parameters are effectively dissolved. The concentration of the soluhon should be sufficient to penhlit adequate
6.4 Marking
The marking shall include the following information:
— name calcium tetrahydrogen bis(orthophosphate)”. trade name and grade:
net mass;
name and the address of the supplier and/or manufacturer:
statement “this product conforms to EN 1204”.
6.5 Storage
6.5.1 Material
Use plastics, avoid contact with metals.
6.5.2 Long term stability
Product is stable for at least one year if stored in closed containers.
6.5.3 Storage incompatibilities No special requirement.BS EN 1204-2005 pdf download.

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