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Commission Regulation (EU) No 10/2011Show full title

Commission Regulation (EU) No 10/2011 of 14 January 2011 on plastic materials and articles intended to come into contact with food (Text with EEA relevance)

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4.Detailed specification on substances

Table 4 on detailed specifications on substances contains the following information

Column 1 (FCM substance No): contains the unique identification number of the substances referred to in Column 1 in Table 1 of Annex I to which the specification applies.

Column 2 (Detailed specification on the substance): contains the specification on the substance.

Table 4

(1)(2)
FCM substance NoDetailed specification on the substance
744DefinitionThe copolymers are produced by the controlled fermentation of Alcaligenes eutrophus using mixtures of glucose and propanoic acid as carbon sources. The organism used has not been genetically engineered and has been derived from a single wildtype organism Alcaligenes eutrophus strain H16 NCIMB 10442. Master stocks of the organism are stored as freeze-dried ampoules. A submaster/working stock is prepared from the master stock and stored in liquid nitrogen and used to prepare inocula for the fermenter. Fermenter samples will be examined daily both microscopically and for any changes in colonial morphology on a variety of agars at different temperatures. The copolymers are isolated from heat treatment bacteria by controlled digestion of the other cellular components, washing and drying. These copolymers are normally offered as formulated, melt formed granules containing additives such as nucleating agents, plasticisers, fillers, stabilisers and pigments which all conform to the general and individual specifications
Chemical namePoly(3-D-hydroxybutanoate-co-3-D-hydroxypentanoate)
CAS number0080181-31-3
Structural formula

where n/(m + n) greater than 0 and less or equal to 0,25

Average molecular weightNot less than 150 000 Daltons (measured by gel permeation chromatography)
AssayNot less than 98 % poly(3-D-hydroxybutanoate-co-3-D-hydoxy-pentanoate) analysed after hydrolysis as a mixture of 3-D-hydro-xybutanoic and 3-D-hydroxypentanoic acids
DescriptionWhite to off-white powder after isolation
Characteristics
Identification tests:
SolubilitySoluble in chlorinated hydrocarbons such as chloroform or dichloromethane but practically insoluble in ethanol, aliphatic alkanes and water
RestrictionQMA for crotonic acid is 0,05 mg/6 dm2
PurityPrior to granulation the raw material copolymer powder must contain:
  • nitrogen,

Not more than 2 500 mg/kg of plastic
  • zinc,

Not more than 100 mg/kg of plastic
  • copper,

Not more than 5 mg/kg of plastic
  • lead,

Not more than 2 mg/kg of plastic
  • arsenic,

Not more than 1 mg/kg of plastic
  • chromium,

Not more than 1 mg/kg of plastic

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