GB/T 8372-2017Toothpaste (English PDF)

3.1 Toothpaste

A paste-like substance composed of a friction agent, a moisturizer, a thickener, a foaming agent, an aromatic, water, and other additives (including a functional composition for improving oral health) as the main raw materials.

4.1 Safety requirements

Under normal or reasonably foreseeable conditions of use, toothpaste shall not cause harm to human health.

4.2 Raw material requirements for toothpaste

The raw materials used in the production of toothpaste shall meet the requirements of GB 22115.

4.4 Sensory, physical and chemical indicators

The sensory and physical and chemical indicators of toothpaste products shall meet the requirements of Table 2.

4.5 Net quantity

The net quantity of toothpaste products shall comply with the requirements of "Measures for the Metrological Supervision and Administration of Products in Prepackages with Fixed Content".

4.6 Packaging appearance requirements

5.1 Microbiological indicators

It shall be in accordance with Clause 5 Microbiological inspection methods of "Safety and Technical Standards for Cosmetics".

5.2 Lead (Pb) content

5.2.1 General

This method is an arbitration inspection method. Non-arbitration inspection may be carried out in accordance with the provisions of Appendix A.

5.2.2 Toothpaste with calcium carbonate or calcium hydrogen phosphate as friction agent

5.2.2.1.13 Hg2+ solution. WEIGH 0.537 g of mercury oxide in a small beaker;

ADD 1 mL of nitric acid to dissolve it; ADD about 50 mL of water and filter;

WASH the beaker and funnel with a little water. ADD about 480 mL of water;

USE 5 mol/L and 0.2 mol/L nitric acid solution to adjust the pH to 1.6; ADD water to 500 mL. The solution contains Hg2+ 1000 µg/mL.

5.2.4 Allowable difference

The allowable difference of the results of the two parallel determinations is ±5%.

5.2.2.1.12 Trichloromethane

5.2.2.2 Apparatus

5.2.2.2.1 pH meter. Accuracy is 0.02pH unit. USE pH=4.00 buffer solution to correct.

5.2.3 Toothpaste with silica or aluminum hydroxide as friction agent

5.2.3.1 Reagents

Sulfuric acid. Other reagents are the same as 5.2.2.1.

5.2.3.2 Apparatus

Same as 5.2.2.2.

5.2.3.3 Preparation and determination of sample

5.2.3.3.1 Silica toothpaste

Randomly take 1 sample toothpaste, from which weigh 2 g of toothpaste, accurate to 0.01 g; PLACE it in a 250 mL conical flask; ADD 5 mL of water and 5 mL of nitric acid; USE a small fire to heat, until the paste dissolves. Slightly cool, add 1.5 mL of hydrogen peroxide solution and shake; USE a small fire to heat, until reddish brown nitrogen dioxide gas generates. Immediately add 2 mL of 10% ammonium sulfamate solution; REMOVE when slightly hot; ADD 20 mL of water; COOL to room temperature; USE two layers of filter paper to suction-filter.

5.2.3.3.2 Aluminum hydroxide toothpaste

Randomly take 1 sample toothpaste, from which weigh 2 g of toothpaste, accurate to 0.01 g; PLACE it in a 250 mL conical flask; ADD 15 mL of nitric acid and 1 mL of sulfuric acid; HEAT until reddish brown nitrogen dioxide gas generates and remove. Slightly cool, add 2 mL of hydrogen peroxide solution and shake;

5.3 Arsenic content

It shall be in accordance with the arsenic stain method in GB 7917.2.

5.4 Paste

Randomly take 2 sample toothpaste. After cutting the hose, visually test according to the sensory indicator requirements in Table 2.

5.5 pH value

5.5.1 Apparatus

5.5.2 Determination procedure

Randomly take 1 sample toothpaste, from which weigh 5 g of toothpaste, accurate to 0.01 g. PLACE it in a 50 mL beaker; ADD 20 mL of pre-boiled and cooled distilled water and stir well; at 20 ° C, use a pH meter to measure; within 10 min, read the indicated value.

5.5.3 Result representation

The absolute difference of the parallel measured values is not more than 0.1pH unit. The arithmetic mean is taken as the measurement result.

5.6 Stability

5.6.1 Apparatus

5.6.2 Determination procedure

TAKE 2 sample toothpaste. 1 sample is stored at room temperature. The other sample is placed in a refrigerator at -8 °C±1 °C. After 8 h, it is taken out; then placed in a constant-temperature incubator at 45 °C±1 °C and taken out after 8 h. Restore to room temperature; OPEN the lid; the paste shall not overflow the hose mouth. INVERT the toothpaste hose. Within 10 s, no liquid shall drip out from the hose mouth. After the paste is squeezed out, it is compared with the sample stored at room temperature. The fragrance and color shall be normal.

5.7 Hard particles

5.7.1 Apparatus

6.1 Inspection classification

6.1.1 Type inspection Toothpaste

type inspection includes all items in the standard. During normal production, it shall not be less than one time per quarter. In one of the following cases, type inspection shall also be carried out.

6.1.2 Exit-factory inspection

The product must pass the inspection of the manufacturer before it can leave the factory. The exit-factory inspection items are the physical and chemical indicators, sensory indicators, total number of colonies among microbiological indicators, net quantity, and packaging appearance requirements specified in Clause 4.

6.2 Lot grouping and sampling, decision rules

6.2.1 Lot grouping

Toothpaste shall be delivered in lots. The finished product of the same specification produced by the same raw materials and the same process conditions is one lot.

6.2.2 Sampling

SAMPLE in boxes. According to the lot size, determine the sample according to Table 3.

6.2.3 Decision rules

6.2.3.1 If the inspection fails, samples may be re-taken from the double number of box sample, to re-inspect the unqualified item. If the re-inspection result is still unqualified, this lot of products is judged to be unqualified.

8.1 Transportation

It must be lightly loaded and unloaded and stacked according to box arrows. It shall avoid severe shake, impact, and sun and rain.

8.2 Storage

It shall be stored in a ventilated and dry warehouse. It shall not be close to the water source and heating. When stacking, it shall be more than 10 cm away from the ground and be more than 50 cm away from the wall, leaving the passage. […]