Набор подарочных коробок, силиконовая присоска для новорожденных
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Product | Montmorillonite Clay |
CAS | 1318-93-0 |
Purity | >99% |
APS | <80nm |
Molecular Formula | Al2[(OH)2|Si4O10].nH2O |
Solubility | Insoluble in water |
Test Item | Standard | Result | ||
Character | Grey fine powder; clay smell and color deepened if moistured withwater. Practically insoluble in water, diluted hydrochloric acid and alkali Hydroxide. | Complies | ||
Identification | (1) A gelatinous white matter will appear on the surface of the water drop. (2) the diffraction pattern of the sample should be consistent with the characteristic peaks of montmorillonite (2θ angles are 5.8°,19.8° and 61.9° respectively) in the diffraction pattern of the reference standard. (3) The white colloidal precipitate was formed by taking the solution of the sample and dropping it with sodium hydroxide.Separation,precipitation can be dissolved in excess of sodium hydroxide solution.Take the sample solution, add ammonia solution to form a white colloidal precipitation, add alizarin sodium sulfate to indicate the number of drops, the precipitation is fuchsia. | Positive The diffraction angle(2θ)are 6.0°、19.7° and 61.9° Positive | ||
Acidity and alkality | 5.0~9.0 | 7.1 | ||
Chloride | Not more intense than white precipitate produced by 5.0 ml of standard sodium chloride solution. | Complies | ||
Carbonate | Negative | Negative | ||
Water-solute Matter | No more than 0.7% | 0.1% | ||
Loss on Drying | Loss wt. not more than 10.0% | 2.1% | ||
Particle size | D(0.5) 6-23μm; D(0.9) 16-50μm; Volume average particle size D【4,3】8-27μm | D(0.5)14μm; d(0.9)35μm; D【4,3】17μm | ||
Heavy Metal | Not more than 10 ppm | Complies | ||
Arsenic | Not more than 2 ppm | Complies | ||
Swelling Capacity | 2.0-5.0 | 3.2 | ||
Absorbability | Each 100g product contains [Co(NH3)]CL3 80-130mmol | 115mmol/100g | ||
Christobalite and other impurities test | In the obtained sample X-ray diffraction spectrum, peak height ratio of christobalite should be ≤50%, any other impurity ≤70% | Cristobalite:19%; any other impurity:31% | ||
Microbial limit | ||||
Total Bacterial Count | <1000 cfu/g | Complies | ||
Total Molds and Yeasts count | <100 cfu/g | Complies | ||
Escherichia coli | None/g | None/g | ||
Bile-tolerant gram negative bacteria | <100 cfu/g | <10 cfu/g | ||
Salmonella | None/10g | None/10g | ||
Live Mites | None | None | ||
Assay(on dried basis) | The assay of Al2O3 should be 12.0%-25.0% | 15.6% | ||
The assay of SiO2 should be 55.0%-65.0% | 57.3 % | |||
Conclusion: Complies with Chinese Pharmacopoeia 2020 |
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