1 Scope
This standard specifies requirements, test methods, inspection rules, marking, labelling, packaging, transportation and storage of calcium hydrogen phosphate for tooth-paste industry (also known as dicalcium phosphate dihydrate for toothpaste, dicalcium dhosphate for toothpase, or dicalcium phosphate dihydrate for toothpase).
This standard is applicable to calcium hydrogen phosphate for tooth-paste industry. The product is mainly used as toothpaste abrasive.
2 Normative References
The following documents contain provisions which, by reference in this Standard, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding the correction contents), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of these references indicated below. For undated references, the latest edition of the normative document applies.
GB/T 191-2008 Packaging - Pictorial Marking for Handling of Goods (ISO 780: 1997, MOD)
GB/T 3049-2006 Chemical products for industrial use - General method for determination of iron content - 1,10-Phenanthroline spectrophotometric method (ISO 6685: 1982,IDT)
GB/T 6003.1-1997 Test Sieves of Metal Wire Cloth
GB/T 6678 General Principles for Sampling Chemical Products
GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test Methods (ISO 3696:1987, MOD)
GB/T 7917.2-1987 Standard Method of Hygienic Test for Cosmetics - Arsenic
GB/T 7918.2 Standard methods of microbiological examination for cosmetics - Standard plate count
GB/T 7918.3 Standard Methods of Microbiological Examination for Cosmetics - Fecal Coliforms
GB/T 7918.4 Standard Methods of Microbiological Examination for Cosmetics - Pseudomonas Aeruginosa
GB/T 7918.5 Standard Methods of Microbiological Examination for Cosmetics - Staphylococcus Aureus
GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 9086-2007 The white ceramic standard plate for colorimetry and photometry
HG/T 3696.1 Inorganic Chemical Products - Preparations of Standard Volumetric Solutions for Chemical Analysis
HG/T 3696.2 Inorganic Chemical Products Preparations of Standard Solutions for Chemical Analysis
HG/T 3696.3 Inorganic chemical products - Preparations of reagent solutions for chemical analysis
3 Molecular formula and relative molecular mass
Molecular formula: CaHPO4•2H2O
Foreword i
1 Scope
2 Normative References
3 Molecular formula and relative molecular mass
4 Requirements
5 Test method
5.1 Safety Warning
5.2 General Requirements
5.3 Appearance Test
5.4 Determination of Calcium Oxide Content
5.5 Determination of Phosphorus Pentoxide
5.6 Whiteness (Wg) Determination
5.7 Determination of pH Value
5.8 Fineness Determination
5.9 Determination of Water Absorption
5.10 Determination of Apparent Density
5.11 Stability Test
5.12 Fluoride Stability Test
5.13 Determination of Loss on Ignition
5.14 Determination of Loss On Drying (60℃)
5.15 Determination of Heavy Metal Content
5.16 Determination of Arsenic Content
5.17 Determination of Iron Content
5.18 Determination of Fluorine Content
5.19 Determination of Chloride Content
5.20 Determination of Carbonate
5.21 Determination of Sulfate
5.22 Determination of Sulfide
5.23 Determination of HCl Insoluble
5.24 Determination of Total Colony Number
5.25 Determination of Fecal Coliform
5.26 Determination of pseudomonas aeruginosa
5.27 Determination of staphylococcus aureus
5.28 Determination of Total Mold and Yeast Number
6 Inspection Rules
7 Marking and Labeling
8 Packaging, Transportation and Storage
