T/TJWL 004-2018 Food cold chain refrigerant absorber

Scope

Main technical content: 5 Technical Requirements 5.1 Raw Materials 5.1.1 Main components include: water, salt (sodium chloride), sodium carboxymethyl cellulose, and food dyes. 5.1.2 The material is a mixed liquid composed of the above raw materials. After mixing, the properties are stable and no chemical changes occur. 5.1.3 The appearance of the refrigerant is clear and semi-transparent liquid. 5.2 Safety 5.2.1 Requirements for food-grade safety indicators 5.2.1.1 The safety test of drinking water meets the requirements of GB 5749. 5.2.1.2 The safety requirements for edible salt comply with the provisions of GB/T 5461. 5.2.1.3 The safety requirements for sodium carboxymethyl cellulose comply with the provisions of GB 2760. 5.2.1.4 The safety requirements for food dyes comply with the provisions of GB 2760. 5.2 Refrigerant food safety requirements According to GB 15193.3, the acute oral toxicity test of the refrigerant meets the requirements. 5.3 Performance According to the requirements of the usage scenarios, it is divided into deep-cooled solid state, cold-preservation slushy state, and freshness and heat-preservation liquid state. 5.4 Physical and chemical indicators The allowable deviation values of the refrigerant's physical and chemical indicators and the allowable deviations are shown in Table 1. Table 1: Allowable deviation values of the refrigerant's physical and chemical indicators Standard indicator Limit deviation No. Temperature characteristics (phase change temperature) Latent heat of phase change (kJ/kg) Salt content Sodium carboxymethyl cellulose content 1 Upper limit: -2.5°C > 280°C Upper limit: 1.25% Upper limit: 0.20% Lower limit: -1.5°C Lower limit: 1.15% Lower limit: 0.15% 2 Upper limit: -6.5°C > 280°C Upper limit: 1.95% Upper limit: 0.20% Lower limit: -5.5°C Lower limit: 1.85% Lower limit: 0.15% 3 Upper limit: -10.5°C > 280°C Upper limit: 2.55% Uppe

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