GB24568-2009
Calcium hydrogen phosphate for tooth-paste industry
牙膏工业用磷酸氢钙
GB 24568-2009 is a current mandatory Chinese national standard for Calcium hydrogen phosphate for tooth-paste industry. It appears in the Chemicals compliance cluster with a product safety focus and has an implementation date of Jun 1, 2010.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to calcium hydrogen phosphate (also known as dicalcium phosphate dihydrate) specifically manufactured for the toothpaste industry, where it is primarily used as an abrasive. It covers two types: Type I (fluoride-stable) and Type II (regular). This standard is mandatory for all manufacturers producing or supplying this chemical to the Chinese toothpaste market. It does not apply to calcium hydrogen phosphate used in other industrial or agricultural applications.
Technical requirements
The standard specifies stringent physical and chemical requirements for calcium hydrogen phosphate used in toothpaste. Chemical composition requirements include specific percentage ranges for calcium oxide (CaO) and phosphorus pentoxide (P2O5), as well as strict maximum limits for heavy metals (as Pb), arsenic (As), iron (Fe), fluoride (F), chlorides, and sulfates. Physical properties such as whiteness (Wg), pH value of a 20% suspension, fineness (passing through a 45μm sieve), water absorption, and apparent density are strictly regulated. Furthermore, the standard mandates stability tests, including a general stability test and a specific fluoride stability test for Type I products, ensuring the material does not degrade or react adversely in toothpaste formulations. Microbiological limits are also enforced, requiring the absence of pathogens like Pseudomonas aeruginosa and Staphylococcus aureus, and setting maximum counts for total bacteria, molds, and yeasts.
Testing methods
Testing methods involve a combination of titrimetric, gravimetric, and instrumental analyses. Calcium content is determined via EDTA titration, while phosphorus content is measured gravimetrically using the quinoline phosphomolybdate method. Whiteness is measured using a whiteness meter calibrated against standard white boards. Heavy metals and arsenic are evaluated using colorimetric comparison and spectrophotometry (referencing GB/T 7917.2-1987). Fluoride content and fluoride stability are assessed using ion-selective electrodes. Microbiological tests are conducted according to standard cosmetic microbiological examination methods (GB/T 7918 series) to detect specific pathogens and count total microbial loads.
FAQs
What products are regulated under GB 24568-2009?
GB 24568-2009 regulates calcium hydrogen phosphate specifically used as an abrasive in the toothpaste industry. It covers both fluoride-stable (Type I) and regular (Type II) variants.
Are there any updates from the previous version of GB 24568-2009?
GB 24568-2009 is the first published version of this national standard for toothpaste-grade calcium hydrogen phosphate. There are no previous versions to compare it against.
What are the key microbiological requirements under this standard?
The standard mandates that harmful pathogens such as fecal coliforms, Pseudomonas aeruginosa, and Staphylococcus aureus must not be detected. Additionally, the total bacterial count and total mold/yeast count must not exceed 200 CFU/g.
The summary above provides a high-level overview of GB 24568-2009. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 24568-2009 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- G12
- ICS
- 71.060.50
- Competent department
- National Medical Products Administration
- Technical committee
- National Medical Products Administration