# Commission Regulation (EU) No 298/2014 of 21 March 2014 amending Annex II to Regulation (EC) No 1333/2008 of the European Parliament and of the Council and the Annex to Commission Regulation (EU) No 231/2012 as regards Magnesium dihydrogen diphosphate for use as raising agent and acidity regulator (Text with EEA relevance), Annex II

Extent: E+W+S+N.I.

In the Annex to Regulation (EU) No 231/2012, the following entry is inserted after the specifications for food additive E 450 (vii):
‘
E 450(ix) MAGNESIUM DIHYDROGEN DIPHOSPHATE
Synonyms
Acid magnesium pyrophosphate, monomagnesium dihydrogen pyrophosphate; magnesium diphosphate, magnesium pyrophosphate
Definition
Magnesium dihydrogen diphosphate is the acidic magnesium salt of diphosphoric acid. It is manufactured by adding an aqueous dispersion of magnesium hydroxide slowly to phosphoric acid, until a molar ratio about 1:2 between Mg and P is reached. The temperature is held under 60 °C during the reaction. About 0,1 % hydrogen peroxide is added to the reaction mixture and the slurry is then heated and milled.
EINECS
244-016-8
Chemical name
Mono magnesium dihydrogen diphosphate
Chemical formula
MgH2P2O7
Molecular Weight
200,25
Assay
P2O5 content not less than 68,0 % and not more than 70,5 % expressed as P2O5
MgO content not less than 18,0 % and not more than 20,5 % expressed as MgO
Description
White crystals or powder
Identification
Solubility
Slightly soluble in water, practically insoluble in ethanol
Particle size:
The average particle size will deviate between 10 and 50 μm
Purity
Loss on ignition
Not more than 12 % (800 °C, 0,5 hours)
Fluoride
Not more than 20 mg/kg (expressed as fluorine)
Aluminium
Not more than 50 mg/kg
Arsenic
Not more than 1 mg/kg
Cadmium
Not more than 1 mg/kg.
Lead
Not more than 1 mg/kg
’

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Source: https://www.legislation.gov.uk/eur/2014/298/annex/II (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-298/annex-II
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.