Heavy Kaolin IP/BP/EP

Chemical Name: Hydrated Aluminum Silicate (AlSiO…(OH)„). Appearance: A fine, white or off-white powder, odorless and tasteless. Purity Requirements: Must primarily consist of kaolin (hydrated aluminum silicate). Impurities such as heavy metals, arsenic, lead, and iron must be within specified limits. Moisture Content: The loss on drying is usually specified, with limits typically around 10-15% moisture. pH: The pH of an aqueous suspension (usually at 1-2% w/v) is typically 4.5 - 5.5 (slightly acidic). Microscopy: It should meet specified requirements for microscopic examination, which can verify the presence of kaolin and the absence of contaminants. Microbial Contamination: Must comply with limits for total microbial count, and there should be no pathogenic organisms present. Heavy Metal Content: Limits on heavy metals, typically not exceeding 20 ppm for lead and other metals as specified by BP standards. Ash Content: Ash value is typically specified to check the inorganic content, generally around <1%. Application: Primarily used in pharmaceutical formulations for its absorbent properties (e.g., in antacid preparations and diarrhea treatments) and for topical use in cosmetics.

Chemical Name: Kaolinite (Hydrated Aluminum Silicate) CAS Number: 1332-58-7 Molecular Formula: AlSiO…(OH)„ Appearance: White to off-white powder, free from visible foreign matter. Odor: Odorless. Solubility: Insoluble in water and alcohol. pH: Typically between 5.0 - 7.0 in a 5% aqueous suspension. Loss on Drying: Typically around 10% - 14% (depending on the specific grade and processing). Ash Content: Typically less than 10%. Identification: Confirmed through infrared spectroscopy or X-ray diffraction showing the presence of kaolinite. Key Characteristics: Purity: Must be at least 90% Kaolinite. Microbial Limits: Free from harmful levels of microbial contamination, including Salmonella and E. coli. Heavy Metals: Must meet limits specified by the European Pharmacopoeia (typically less than 10 ppm for lead (Pb) and 2 ppm for arsenic (As)). Applications: Pharmaceutical Uses: As an antidiarrheal agent, suspending agent, and in topical treatments. Industrial Uses: In ceramics, paint, and paper manufacturing for its thickening and filler properties. Storage: Store in a clean, dry container to prevent contamination from moisture or foreign substances. This specification ensures that the Heavy Kaolin EP meets the standards required for pharmaceutical and industrial applications, ensuring safety and quality.