Some standard content:
National Standard of the People's Republic of China
Tale powder
Main content and applicable scope
GB 15342-94
This standard specifies the classification, technical requirements, test methods, inspection rules and general requirements for product marking, packaging, storage and transportation of talcum powder.
This standard applies to the inspection and acceptance of talcum powder products. 2
References
GB1.3 Guidelines for Standardization Work Provisions for the Preparation of Product Standards GB5211.15 Determination of Oil Absorption of Materials
GB5950 General Rules for Whiteness Test Methods for Building Materials and Non-metallic Mineral Products Talc Chemical Analysis Method
GB/T 15343
GB/T15344 Physical Test Method for Talc
JC/T534 Bags for Talc Packaging
JC/T542
Microbiological Test Method for Talc
3 Product Classification and Grading
3.1 Classification and Varieties
Talc is divided into two types: ground talc and micro-fine talc according to its crushed particle size. Ground talc is divided into 9 varieties according to different industrial uses, see Table 1. Table 1. Talcum powder product varieties and uses
Product variety name
Cosmetic grade talcum powder
Medical-food grade talcum powder
Painted paper talcum powder
Papermaking grade talcum powder
Plastic grade talcum powder
Rubber pea grade talcum powder
Cable grade talcum powder
Ceramic grade talcum powder
Waterproof material grade talcum powder
Fine talcum powder
Industrial use
Used in various moisturizing powders, beauty powders, talcum powders and other medical tablets, sugar coatings, prickly heat powders and Chinese medicine prescriptions, food additives, high-insulating agents, etc. Used in white body pigments and various water-based and oil-based , tree chest industrial materials, primer, protective paint, etc. Used in various types of paper and paperboard fillers, wood paste control agent Used in polypropylene, nylon, polyvinyl chloride, vinyl, vinyl and resin and other plastic materials Used in rubber fillers and rubber products Anti-adhesive agent Used in electrical seam rubber reinforcing agent, electrical grade high insulation agent Used in the manufacture of electrical porcelain, wireless porcelain, various industrial ceramics, building seals, daily ceramics and porcelain shafts, etc. Used in waterproof membranes, waterproof coatings, waterproof ointments, etc. Used in high-grade paints and coatings, materials, electrical rubber, cosmetics, copperplate paper coatings, textile lubricants, etc. Approved by the State Bureau of Technical Supervision on December 22, 1994 and implemented on August 1, 1995
3-2 Product classification
GB 15342-94
Various types of talcum powder are divided into three quality grades: superior product, first-class product and qualified product according to their physical and chemical properties. 3.3 Specifications
3.3.1 Ground talcum powder is divided into the following two specifications according to its fineness and screen pass rate: 8. Fineness 45μm, expressed as the weight percentage of the product passing the screen b. Fineness 75μm, expressed as the weight percentage of the product passing the screen. 3.3.2 Fine talcum powder is expressed according to its particle size distribution and particle size composition, as the cumulative percentage content of products less than 20, 10.5, and 2μm. 3.4 Product Marking
3.4.1 The product marking of talcum powder is expressed in the following way: xx
X-×-XX
Standard No.
Product Name and Code
3.4.2 Marking Example
Example 1: Paint-grade talcum powder with a whiteness of 75%, a fineness of 45 μm and a pass rate of 98% Talc powder TL75-45-98GB
Example 2: Fine talcum powder with a whiteness of 80%, a particle size of less than 20 μm and a cumulative percentage content greater than 85% Fine talcum powder WF80-20-85GB
Example 3: Fineness of 75 μm and a pass rate of 99. 9% rubber grade talcum powder AJ75-99.9GB
4 Technical requirements
4.1 Technical requirements for cosmetic grade talcum powder
The physical and chemical properties of cosmetic grade talcum powder shall comply with the requirements of Table 2. Table 2 Physical and chemical properties of cosmetic grade talc Physical and chemical properties
Water-soluble matter
Acid-soluble matter
Superior product
Shows blue when not rubbed
Qualified product
Physical and chemical properties
Fineness, pass rate
Loss on ignition (1000)
Bacteria, pieces/g
Amphibole asbestos minerals
1534294
Continued Table 2
Superior product
45 μm
3×10-1
20×10-4
Total number 500, oxygen bacteria 100, no pathogenic bacteria shall be detectedX-ray diffraction analysis shall not find
Note, 1) Pathogenic bacteria mainly refer to Escherichia coli, Staphylococcus aeruginosa. Technical requirements for pharmaceutical-food grade talcum powder
The physical and chemical properties of pharmaceutical-food grade talcum powder shall comply with the provisions of Table 3. 3 Physical and chemical properties of pharmaceutical-food grade talcum powder Table 3
Physical and chemical properties
Details, g
Loss on ignition (1000℃)
Acid soluble
Water soluble
Acidity and alkalinity
Details, pass rate
Superior quality
No odor, no sandy particles, with lubrication 85.0
Total 500, mildew 100, no pathogenic brain detected 6.50
Normal test paper shows neutral reaction
Does not show blue immediately
75 μm
45 μm
3×10-*
10X10-4
40×10-
Note, 1) Pathogenic bacteria mainly refer to Escherichia coli, Staphylococcus aeruginosa, and Pseudomonas aeruginosa. Technical requirements for paint-grade talcum powder
The physical and chemical properties of paint-grade talcum powder shall comply with the requirements of Table 4. Qualified products
Qualified products
Physical and chemical properties
Fineness, 45 μm Pass rate
<20 μm
Cumulative total particle size distribution
Oil absorption
Loss on ignition (1000℃)
Water-soluble matter
4.4 Technical requirements for papermaking grade talc
GB15342-94
Table 4 Physical and chemical properties of coating grade talc Superior products
The physical and chemical properties of papermaking grade talc shall comply with the requirements of Table 5, First-class products
0. 5~1. 0
20.0~50.0
8. 0~10. 0
Table 5 Physical and chemical properties of paper-grade talc Physical and chemical properties
Dust, mm\/g
Calcium iodate
Soluble iron (in Fez())
Loss on ignition (800℃)
Abrasion (copper mesh), mg
Fineness, 45μm pass rate
Oil absorption
4.5 Technical requirements for plastic-grade talc
Superior product
The physical and chemical properties of plastic-grade talc shall comply with the requirements of Table 6. Quality products
Qualified products
Low carbonate talc
8. 0 ~~9. 0
20. 0~50. 0
High carbonate talc
8. 0~10. 0
Physical and chemical properties
Fineness, 45μtn pass rate
.20 μm
Cumulative content of particle size distribution
Silicon dioxide
Magnesium oxide
Ferric chloride
Aluminum oxide
Calcium oxide
Loss on ignition (1000℃)
Volume density/cm
<10 μm
Bulk density
Ignition density
4.6Technical requirements for rubber-grade talcum powder
GB15342-94
Table 6 Physical and chemical properties of plastic-grade talcum powderSuperior products
The physical and chemical properties of rubber-grade talcum powder shall comply with the provisions of Table 7. 0. 5
First-class products
Table 7 Physical and chemical properties of rubber-grade talcum powderPhysical and chemical properties
Group density, 75μmPass rate
Loss on sintering (1000℃）
Acid soluble matter
Acid soluble iron (as Fe,),)
Soluble copper
Soluble manganese
4.7Technical requirements for cable-grade talcum powder
Superior products
The physical and chemical properties of cable-grade talcum powder shall comply with the provisions of Table 8. Quality products
8. 0~10. 0
Qualified products
Qualified products
Physical and chemical properties
Acid insoluble matter
Acid soluble iron (Fe:O,(calculated)
Ignition loss (1000)
Iron absorption
Fineness, pass rate
Technical requirements for Japanese ceramic grade talcum powder
GB15342-94
Table 8 Physical and chemical performance indicators of cable grade talcum powder Superior product
45 μm,98. 0
The physical and chemical properties of ceramic talc powder shall comply with the requirements of Table 9. The physical and chemical properties of ceramic talc powder shall comply with the requirements of Table 9. Table 9 Physical and chemical properties of ceramic talc powder Physical and chemical properties
Silicon dioxide
Magnesium oxide
Aluminum oxide
Calcium oxide
Ferric oxide
Potassium oxide and sodium oxide
Alkane loss (1000℃)
Acid latent reaction (calculated as CaO)
Fineness, 45 μm Pass rate
Technical requirements for waterproof material grade talc
The physical and chemical properties of waterproof material grade talc shall comply with the provisions of Table 10.
Physical and chemical properties of waterproof material grade talc Table 10
Physical and chemical properties
Density g/cm
Silicon dioxide and magnesium oxide
Ignition loss (1000℃）
Fineness, 75 μm Pass rate
Technical requirements for fine talcbzxz.net
75 μm,98. 0
Qualified products
Qualified products
Qualified products
GB 15342—94
The physical and chemical properties of fine talc shall comply with the provisions of Table 11 Table 11 Physical and chemical properties of fine talc Physical and chemical properties
Fineness, 45 μm Screen residue
Particle size distributionOriginal volume content≥
Volume density
Ignition loss (1000℃)
Water soluble matter
Oil absorption
Bulk density
Compactness
Note, other physical and chemical properties and indicators shall be negotiated by the supply and demand parties. 5 Test method
According to official appraisal.
Perform according to GB5950.
5.3 Oil absorption
Perform according to GB5211.15.
20. 0~50. 0
Qualified products
5.4 Fineness (pass rate or sieve residue), particle size distribution, density, bulk density, abrasiveness, dust, iron ore, amphibole asbestos minerals, moisture, pH value, etc.
According to GB/T 15344. When several test methods are used in parallel, method A is used as the intermediate method. 5.5 Bacteria
According to JC/T 542.
5.6 Silicon dioxide, magnesium oxide, aluminum oxide, calcium oxide, iron oxide, potassium oxide and sodium oxide, ignition loss, acid insoluble matter, acid soluble matter, water soluble matter, acid soluble iron, iron salt, acid soluble calcium, copper, manganese, arsenic, lead, heavy metals, acidity and alkalinity, etc. are carried out in accordance with GB/T15343. When several test methods are used in parallel, method A is used as the arbitration method. 6
Inspection rules
6.1 Inspection classification
6.1.1 Talc inspection is divided into factory inspection and type inspection. The various inspection items are shown in Table 12. Product name
Cosmetic satin talc
Medicine-food satin talc
Paint paper talc
Papermaking satin talc
Ink paper talc
Rubber grade talc
Electroshrinkage grade talc
Ceramic grade talc
Waterproof material talc
Fine cyanite powder
GB 15342-94
Table 12 Talc factory inspection and type inspection test items Factory inspection items
Whiteness, fineness, moisture, water-soluble matter, loss on ignition, bacterial properties, whiteness, fineness, moisture, loss on ignition, sleeping matter, water-soluble matter, bacterial whiteness, fineness, oil absorption, moisture, loss on ignition Whiteness, fineness, abrasion, dust, moisture Whiteness, fineness, loss on ignition, ferric oxide fineness, loss on ignition, moisture, acidity
Fineness, moisture, loss on ignition, metallic iron
Silicon dioxide, stearic acid, ferrous oxide, component density, fineness, moisture, pH
Whiteness, loss on ignition, moisture, particle size distribution, bulk densityType inspection items
All items specified in Article 4.2
All items specified in Article 4.3
All items specified in Article 4.4
All items specified in Article 4.5
All items specified in Article 4.6
All items specified in Article 4.7
All items specified in Article 4.8
All items specified in Article 4.9
All items specified in Article 4.10
All items specified in Article 4.11
6.1.2 When any of the situations specified in GB 1.3\6.6.1 occurs, type inspection shall be carried out. During normal production, a type test is required every 6 months.
6. 2 Batch rules
Talc powder must be submitted for inspection in batches. 6.2.1 Batch composition principles
: Talc powder of the same type, specification and quality grade produced from the same talc raw material under the same process conditions can be batched, otherwise they cannot be batched
b. The same product produced at different times or intermittently cannot be mixed in batchesc, and the packaging method in the batch should remain consistent. 6.2. 2 Batch
The batch size of talc powder should be determined according to production capacity, packaging method and actual sales situation. For small packages below 50 kg, 50 tons is generally used as a basic batch. For large packages of 1 t, 100 tons is generally used as a basic batch. When the actual batch is larger than the basic batch, it can be divided into several batches and inspected batch by batch. When the actual batch is smaller than the basic batch, it is regarded as one batch.
6.3 Sampling
6.3.1 Sampling method
Equally spaced sampling is adopted for talcum powder. The sampling interval is expressed by the total number of bags N in the batch divided by the sample size, and the integer part is taken, which is recorded as (N/n). The total number of bags in the batch is numbered in sequence, and the first sub-sample is randomly selected from 1 to (N/n) bags, and then a sub-sample is selected every (N/n) bags.
6.3.2 Sample size and total sample quantity
6.3.2. The sample size of small packages below 150 kB should not be less than 40 bags. Take 0.1 kg sub-sample from each sampling bag in turn. Combine all sub-samples to reduce the sample of the inspection batch, and the total sample quantity shall not be less than 4 k. The sample is fully mixed and divided into two equal parts, one for inspection and the other for reference.
When N is less than 40 bags, a sub-sample should be taken from each bag. 6.3.2.2 The sample size of 1t-level large packages shall not be less than 10 bags. Take 0.4kg subsamples from each sampling bag in turn. Combine all subsamples to form the sample of the inspection batch, and the total sample volume shall not be less than 4kB. After fully mixing, the samples shall be divided into two equal parts, one for inspection and one for reference. GB 15342-94
When N is less than 10 bags, subsamples shall be taken from each bag. 6.3.2.3 When testing the abrasion project, subsamples shall be taken from each sampling bag with a size doubled. The sample volume for inspection shall not be less than 4 kg. 6.3.3 Sampling points
When sampling small packages below 50kg, it is advisable to take subsamples at one time during the bagging process. When sampling inside, a small sampler can be used to take subsamples from the center of the bag.
1 When sampling large packages of t-level, it is advisable to collect equal materials in 2 to 3 portions at the loading port (or at the unloading port) to form a sub-sample. When sampling inside, a large sampler should be used to continuously collect powder from the upper loading port to the center of the bag as a sub-sample. 6.4 Judgment rules
6.4.1 When all physical and chemical performance indicators of the batch meet the standard requirements, the batch is judged to be qualified. 6. 4. 2 When any physical and chemical performance indicator of the batch does not meet the standard requirements, double the number of sub-samples should be re-drawn and the unqualified items should be re-inspected. If the indicators of the re-inspected items meet the standard requirements, the batch is judged to be qualified: if they still do not meet the standard requirements, the batch is judged to be unqualified. 6.4.3 In the inspection batch, if only the moisture index is unqualified and does not affect the performance of talcum powder, the batch is judged to be qualified after deducting the excess moisture from the batch with the consent of the user. 6.4.4 After receiving the product, if the user finds that the quality of the delivered batch does not meet the standard requirements, he shall submit a re-inspection report within 45 days according to the inspection rules and test methods specified in this standard. The supply and demand parties shall negotiate to resolve the dispute. If both parties still have objections, they may entrust the national quality supervision agency to conduct arbitration. 7 Marking, packaging, transportation, storage
7.1 Marking
The talcum powder logo should be printed on the front of the packaging bag in a durable color, and the main content includes: Product name!
b.Trademark,
Product mark;
Quality grade mark;
Net weight:
Production batch number (or number),
Manufacturer (mine) name.
7.2 Packaging
The packaging bags for talcum powder shall comply with the provisions of JC/T534.7.2.1 Packaging requirements for talcum powder
The packaging bags shall be dry, clean and hygienic, without mud, sand or impurity pollution: the packaging bags for medical and cosmetic talcum powder shall be sterilized pre-treated;bE
. The packaging method, quantity and error shall be implemented in accordance with the provisions of Table 13. Table 13 Packaging method, net weight and error table of talcum powder Packaging method
Food exchange (20~30 bags-carton)
Three-layer paper bag
Four-layer paper bag or two-layer paper bag with plastic woven bagFive-layer paper bag or three-layer paper bag with plastic woven bag
One-ton plastic-coated container exchange
7.2.2 On the reverse side of the packaging bag, packaging marks such as moisture-proof, anti-pollution, and anti-damage can be printed. Misuse of prohibition is allowed
7.3 Transportation
GB15342-94
7.3.1 The transportation vehicle or cabin should be clean and sanitary, without stagnant water and odor. 7.3.2 During loading and unloading, it is strictly prevented to directly hook or drop the bag to cause the bag to break. 7.4 Storage
7.4.1 Storage place, generally stored in warehouse. Open air or shed is only suitable for short-term storage. 7.4.2 Storage conditions: The talcum powder in stock should be well ventilated; if stored outdoors, the bottom should be covered with a moisture-proof board and the top should be covered with a canopy. 7.4.3 Storage method: Small packages should be stacked horizontally, with a layer height of 15 to 20 bags. Ton-packaging bulk bags should be placed vertically in a single layer. 7.4.4 Storage period: The peak storage period is 6 months. Additional instructions:
This standard was proposed by the State Building Materials Industry Bureau. This standard was drafted by the Institute of Non-Gold Minerals of Wuhan University of Technology. The main drafters of this standard are Jiang Deyu, Peng Ping, Ouyang Fu, Lu Jicheng, Yan Cuihua, Shang Yubao, Qin Zhengnian, and Lin Jusheng. From the date of implementation of this standard, the former national partial standards for building materials JC161-82 "Talc for papermaking", JC294-82 "Talc for ceramics", JC295-82 "Talc for cables, rubber and plastics", JC296-82 "Talc for textiles", JC297-82 "Talc for carpets", JC298-82 "Talc for medicine, cosmetics and food", and JC299-82 "Talc for coatings" shall be invalid.
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