# Commission Regulation (EU) 2017/1399 of 28 July 2017 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 potassium polyaspartate (Text with EEA relevance), Annex II

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

In the Annex to Regulation (EU) No 231/2012, the following new entry is inserted after the entry for food additive E 452(iv):
‘
E 456 POTASSIUM POLYASPARTATE
Synonyms
Definition
Potassium polyaspartate is the potassium salt of polyaspartic acid, produced from L-aspartic acid and potassium hydroxide. The thermic process transforms the aspartic acid in polysuccinimide that is insoluble. Polysuccinimide is treated with potassium hydroxide allowing the opening of the ring and polymerisation of the units. The last step is the spray drying phase, which results in a light tan powder
CAS number
64723-18-8
Chemical name
L-aspartic acid, homopolymer, potassium salt
Chemical formula
[C4H4NO3K]n
Weight average molecular weight
Approximately 5 300 g/mol
Assay
Not less than 98 % on dry weight basis
Particle size
Not less than 45 μm (not more than 1 % in weight of particles of less than 45 μm)
Description
A light brown odourless powder
Identification
Solubility
Very soluble in water and slightly soluble in organic solvents
pH
7,5-8,5 (40 % aqueous solution)
Purity
Degree of substitutions
Not less than 91,5 % on dry weight basis
Loss on drying
Not more than 11 % (105 °C,12 hours)
Potassium hydroxide
Not more than 2 %
Aspartic acid
Not more than 1 %
Other impurities
Not more than 0,1 %
Arsenic
Not more than 2,5 mg/kg
Lead
Not more than 1,5 mg/kg
Mercury
Not more than 0,5 mg/kg
Cadmium
Not more than 0,1 mg/kg
’

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Source: https://www.legislation.gov.uk/eur/2017/1399/annex/II (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1399/annex-II
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.