technical requirements

2.1 physicochemical indexes

2.1.1 

Bleach in use should be white, powder form, effective chlorine content should be > 20%.

2.1.2

Bleaching powder in use should be white or slightly gray, powder, effective chlorine content should be > 55%.

2.1.3

The tablet weight error rate should be < 5.0%;

Effervescent tablets should be labeled with disintegration time, which should be < 5.0min.

2.1.4

For disinfection of tableware, fruits and vegetables, the content of heavy metal (in terms of lead) shall be ≤30mg/kg, and the content of arsenic shall be ≤3.0mg/kg.

2.2 stability

The degradation rate of the effective chlorine content of the bleaching powder (tablet) within 6 months shall be less than 15%, and the fluctuation of the mark range of the effective chlorine content of the product shall be less than 15%.

The degradation rate of the effective chlorine content in bleaching powder (tablet) within 12 months should be < 10%, and the fluctuation of the mark range of the effective chlorine content of the product should be < 10%.

The effective chlorine content within the effective period of the product shall not be lower than the lower limit of the mark range.

2.3 disinfection effect

The requirements in table 1 should be met.

Table 1    

Bleaching powder, bleaching powder fine disinfectant disinfection effect test requirements

(1)“*”The concentration of the interfering organic substance used in the killing test is 0.3%.

(2)Testing requirements for product hygiene and safety evaluation: quantitative killing test of staphylococcus aureus for disinfection of surfaces and fabrics;

Quantitative killing test of escherichia coli for disinfection of drinking water, fruits and vegetables;

Poliovirus inactivation test for disinfection of food and drink utensils;

Quantitative killing test of bacterial spores for disinfection of humoral contaminated articles, sewage and excreta.