BS EN 16004-2011 pdf download.Chemicals used for treatment of water intended for human consumption – Magnesium oxide.
This BS EN 16004 is applicable to magnesium oxide used for treatment of water intended for human consumption. It describes the characteristics of magnesium oxide and specifies the requirements and the corresponding test methods for magnesium oxide. It gives information on its use in water treatment.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12485, Chemicals used for treatment of water intended for human consumption — Calcium carbonate, high-calcium lime, ha if-burnt dolomite, magnesium oxide and calcium magnesium carbonate — Test methods
ISO 3165, Sampling of chemical products for industrial use — Safety in sampling ISO 6206, Chemical products for industnal use — Sampling — Vocabulary
3 Description
3.1 Identification
3.1.1 Chemical name
Magnesium oxide.
3.1.2 Synonym or common name Perikias/magnesia.
3.1.3 Relative molecular mass
40.31.
3.1.4 Empirical formula
MgO.
3.1.5 Chemical formula
MgO.
3.3 Physical properties
3.3.1 Appearance
The product is a grey material in round granular form.
3.3.2 Density
The density is 3,6 glcm3 at 20 °C.
The bulk density Is from 1,1 glcm3 to 1.3 glcm3.
3.3.3 Solubllity In water
The solubility of product is equal to 0,0062 g/l at 20 C.
3.3.4 Particle size
It varies depending on the application (see A.2.3).
3.4 Chemical properties
Magnesium oxide product reacts as an alkali when dissolved in water. With carbon dioxide and water it hydrolyses and reacts to form magnesium hydrogen carbonate.
4 Purity criteria
4.1 General
This European Standard specifies the minimum purity requirements for calcium magnesium oxide used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to the relevant authorities.
NOTE Users of this product should check the national regulations in order to danty whether It is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used iri the product not stated in this product standard.
Limits have been given for impurities and toxic substances where these are likely to be present in significant quantities from the current production process and raw materials. If a change in the production process or raw materials leads to significant quantities of other impurities or by-products being present, this shall be notified to the user.
5 Test methods
5.1 Sampling
Observe the general recommendations of ISO 3165 and take account of ISO 6206.
Prepare the laboratory sample(s) required by the relevant procedure described in EN 12485.
5.2 Analyses
Use the relevant methods for analysis described in EN 12485.
6 Labelling – Transportation – Storage
6.1 Means of delivery
Magnesium oxide can be delivered In bags, containers and as a bulk material.
In order that the purity of the products is not affected, the means of delivery shall not have been used
previously for any different product or it shall have been specially cleaned and prepared before use.
6.2 Risk and safety labelling according to the EU directives 3)
At the date of publication of this standard, no labelling is required.
NOTE Regulation (EC) No 190712006 of the European Parliament and of the Council of 18 December 2006
concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), estabtishmg a European
Chemicals Agency, amending Directive 1999/45/EC and repealing Council Regulation (EEC) No 793193 and Commission
Regulation (EC) No 1488/94 as well as Council Directive 761769/EEC and Commission Directives 91/155/EEC,
93)67/EEC, 93/105!EC and 2000121/EC contains a list of substances classified by the EU. Substances not listed in this regulation should be classified on the basis of their intrinsic properties accocding to the cnteria in the Regulation by the person responsible for placing the product on the market.
6.3 Transportation regulations and labelling
At the date of publication of this standard, Magnesium oxide products are not classified as dangerous goods.
6.4 Marling
The marking shall Include the following:
— “magnesium oxide”, trade name and grade;
— net mass:
– name and address of supplier andlor manufacturer; the statement “this product conforms to EN 16004.”
6.5 Storage
6.5.1 Long term stability
Product can be stored for unlimited period of time if kept dry,
6.5.2 Storage incompatibilities
Product shall be kept away from acids.BS EN 16004-2011 pdf download.