This standard specifies the analysis methods for various hygienic indicators of rubber gaskets (rings) for food use, which are made of natural rubber as the main raw material and certain additives. This standard is applicable to the analysis of various hygienic indicators of gaskets and washers, etc., which are made of natural rubber as the main raw material, according to a specific formula and with certain additives, and are used for sealing various fruit juice drinks, wine, condiments and canned foods in bottles. GB/T 5009.64-2003 Analysis methods for hygienic standards of rubber gaskets (rings) for food use GB/T5009.64-2003 Standard download decompression password: www.bzxz.net

ICS 67.04C
National Standard of the People's Republic of China
GB/T5009.64—2003
GB/T5009.64—2003
Methud for analysis of hygienic standartlof rubber shtel (ring) for food
use2003-08-11 Issued
Ministry of Health of the People's Republic of China
National Standardization Administration of the People's Republic of China
2004-01-01 Implementation
CB/I5009.64—2003
This standard represents the analytical method of the standard for rubber products (type) of the health of B/I06.64-199. Compared with H/00S.G1-9, this standard mainly modifies the original standard structure according to G[3/T200014-20018 standard, which can be called Part 4: Chemical analysis method. This standard is issued by the Ministry of Health of the People's Republic of China The Ministry of Health has brought it back to the Ministry of Health. The standard was first issued in 1853 by Shanghai Municipal Health and Epidemic Prevention Station and Shanghai Rubber Products Evaluation Center. It was revised for the second time in 1995 and this is the second time. 434
1 Scope
Analysis method of hygienic standard for rubber sheets (rings) for food
GB/T5009.64—2003
This standard defines the analysis method of various health indicators of rubber sheets (rings) made from natural rubber as the main raw material and with the addition of rottenness additives. It is suitable for the analysis of various health indicators of natural rubber sheets (rings) made from natural rubber as the main raw material and with the addition of rottenness additives. It is made with a certain brush; it is used to pack various fruit and vegetable ingredients, wine, condiments and other food in bottles. The analysis of various hygiene indicators of gaskets, some drawings, etc. 7 Normative cited documents
The clauses in the following documents become the fixed software of this standard through reference in this standard: For any cited document with a date, all subsequent amendments or revisions excluding errors shall not apply to this standard. However, all parties involved in this standard are encouraged to consider whether the latest version of this document can be used as soon as possible. For any cited document without a date, its latest version shall apply to this standard. GB806. Quality control of rubber products.11 Standard GBT513 .-210% ethylene for food packaging, ethylene, ethylene, and other hygiene standards 3 Sampling method
Take the production as a batch number, take 5006 from each batch, put them in a 10-pack bottle, and affix a label with the product name, batch number and sampling date. The number is for testing, and half of it is kept for arbitration. 4 Appearance inspection and sensory index
The product is opened, free of substances, and its filter index is 150%. 1 is determined by the standard 5 Shen sample treatment
The sample is washed with detergent, rinsed with water, and then washed with water, and the bottom is dried for standby use (Figure) 1! If 208 is less than 20, take more, soak the piece
add 20% standard liquid
6.1 water: 63. Soak for 5.3 h.
6.22 4% 6n u, bh
6.3 2% ethyl, u, no more than 0.5h
6.4 n-hexane water bath heat to flow.5t step on the head pad). 7 Evaporation residue
Safety: 0.60-203 No. 5 Preparation:
6 Potassium rust elimination coefficient
According to the principle of No. 9.1 in B/5U9.603
GB/I5009.64—2003
9.1 The precipitate reacts with potassium iodide under acidic conditions to generate protein iron iodide. The oil is very oily and can be quantitatively compared with the standard turbidity. The minimum detection limit is 2. 5e/T.
9.2 Reagents
9.2.1 Ferrous acid solution (5/1.):
9.2.2 Sodium sulfate solution 213; freshly prepared before use 9.2.3 Hydrochloric acid (1-1). wwW.bzxz.Net
9.2.4 Hydrogen monoxide solution (10g/L).
9.2.E Standard microstructure: standard common glue J.1 non-L acid (+1). Solution carrier 1 container: water Dilute to degree. This full liter of reagent is equivalent to 2.ug. 9.2. Zinc standard Make full absorption 1C detailed standard drop, simple 1m and so on dilute to the maximum, this full liter of old liter is equivalent to 1C,5 zinc,
9.3 Analysis steps
Absorb 5.0ml. acetaldehyde () short bubble liquid, "25ml. Colorimetric medium, add this rate 10ml. Absorb 0c,51,0.2.0.2.C.4.0ml. Shovel standard use liquid (relative When CF.C10,0,25.5.30.9,40.0u zinc), chromatograph 4 and then add 1ml of each sample and standard. 12ml of chromatograph acid <1:1). 0.1ml of ammonium hydroxide solution: 00/1.0, 0.1ml of sulfuric acid solution (2a2g/.), 5min later, 5mL of potassium chloride solution (2g/L), add water to the scale and mix, then compare the quantitative data.
9.4 Calculation of results
rx=300
The total content of the sample in the immersion tank is expressed in grams per liter (r&/! The mass of the selected item in the test tank during the determination is expressed in micrograms): V——The volume of the test tank at the time of determination is expressed in liters (1ml). The calculation result is a three-digit effective number.
9.5 Density
Under heavy conditions, the overall density of the test results shall be calculated as the arithmetic mean. 10 Heavy metals
10.1 Principle
Same as GB/T 500.6u—20c3 1:1 5, 110.2 Reagents
*0.2.1 Acid soluble microspheres (<50 g/L)
10.2.2 Potassium chloride (1005 L).
10.2.3 Water.
10.2.4 Other reagents shall be in the range of 15/5333,60—2003 6,2. 10.3 Analysis step
Pipette 2000ml. (4 pool into 50uL colorimetric tube to collect 2m standard value (equivalent to 20 pin) in 156m colorimetric tube, add acetic acid (4% to 20ml, add mL citric acid according to the box solution: 5/1), mL nitrogen water, mL chemical reduction (10R/T), add to the scale, mix and then add 2 full sodium ion microparticles, place in a row for 1m, take the concave color as the background, from the top or side observation rate, the test column can not show the color will be changed with ST
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