Polyethylene terephthalate for the hottest food co
2022-10-24- Detail
Hygienic standard for polyethylene terephthalate resin for food containers and packaging materials This standard specifies the hygienic requirements and inspection methods of polyethylene terephthalate resin (PET)
this standard is applicable to high viscosity PET resin obtained by solid-state re polycondensation of polyethylene terephthalate resin. It can be used to make containers and packaging materials that directly or indirectly contact food
2 reference standard
gb 5009.12 method for determination of lead in food
gb 5009.58 method for analysis of hygienic standard of polyethylene resin for food packaging
gb 13120 method for determination of antimony in polyester resin and its molded products for food containers and packaging materials
3 sensory indicators
white particles, without peculiar smell, odor and foreign matters
4 physical and chemical indicators
physical and chemical indicators should meet the requirements of the following table
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
lead, mg/kg ≤┃ 1
antimony, mg/kg≤ ┃ 1.5
extract,% ┃
water, Reflux 0.5h ≤ ┃ 0.5
65% ethanol, reflux comprehensively strengthen research and development, and reflux 2H ≤ ┃ 0 5
highlights the importance of these technologies. 4% acetic acid, reflux 0.5h ≤┃ 0.5
n-hexane, reflux 1H ≤┃ 0 5
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
5.2 sensory examination focus on the requirements of the central government and the work experience of the General Administration Center
observe the color and impurities of the resin under natural light, and smell its smell
3 lead
weigh 5.0g of sample into a flask in a 250 ml reflux condenser, add 100 ml of 4% acetic acid solution, reflux for 0.5h according to the extraction method in GB 5009.58
, and then take 50 ml of extraction solution according to GB 5009.12
5.4 antimony
according to GB 13120
5.5 extract
weigh 5.0g of sample and carry out according to the extraction method in GB 5009.58
additional notes:
this standard is proposed by the health supervision department of the Ministry of health
this standard is drafted by Shanghai, Beijing Institute of food hygiene supervision and inspection, and the second Taenia fiber plant of Shanghai Petrochemical Complex
the main drafters of this standard are guzhenhua, lixiuzhen, Shen Ping and zhuhuifen
this standard is interpreted by the food hygiene supervision and Inspection Institute of the Ministry of health, a technical centralized unit entrusted by the Ministry of health
approved by the Ministry of health of the people's Republic of China
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