hydroxypropyl-beta-cyclodextrin 128446-35-5

Name: hydroxypropyl- beta-cyclodextrin 128446-35-5 Other name : hydroxypropyl betadex ; 2-hydroxypropyl-beta-cyclodextirn ; Hydroxypropyl-β-cyclodextrin . Abbreviation : HPBCD CAS: 128446-35-5; 94035-02-6; 136019-12-0 EINECS: 420-920-1 Molecular formula : C42H70-nO35(C3H8O2)n Molecular weight: 1134.98+58n Solubility(in 100cm3 solvent,Website:http://www.cydextrin.com, at 25℃) : water: >180 g Methanol: >33g DMSO: >33g Qaulity ： Pharma grade / food grade / cosmetics grade / industry grade Standard : USP38/ EP8.0 / CP2015 Package: 500g/bag , 2kg/bag, 10kg/drum , 20kg/drum Use : medical \ food \ chemical \ cosmetic \ other industries Specification : ITEMS SPECIFICATION(USP38) RESULTS Appearance white powder, insipid, innocent Qualify Assay ≥98％ 99.5% Degree of Substitution 2.8-10.5 5.5 Clarity of solution 50%(w/v) water solution is clear clear Identification(IR) same absorption bands with USP Hydroxypropyl Betadex RS Qualify Loss on Drying ≤10％ 4.5% Conductivity 10%(w/v) water solution ≤200µS/cm 70 Propylene oxide ≤1ppm ＜0.18ppm Propylene glycol　 ≤2.5％ 0.05%　 Sum of Other Impurities ≤1％ 0.51%　 Betadex ≤1.5% 0.39% Residue on Ignition ≤0.2％ 0.09% Heavy Metal ≤20ppm ＜10ppm chloride ≤0.05% ＜0.05% Bacterial endotoxins ≤25EU/g <20EU/g TAMC(cfu/g) ≤1000 80 TYMC(cfu/g) ≤100 30 Salmonella/E. Coli (cfu/g) Absent Absent Storage: at room temperature, in tightly closed container. Applications: Hydroxypropyl-β-cyclodextrin (HP-β-CD) is one of the most widely used cyclodextrin derivatives in current scientific researches and industry applications. It mainly used in food, pharmaceutical and cosmetics industries.     1. In pharmaceuticals industry, HP-β-CD can increase solubility and bioavailability of insoluble drugs, so that the efficacy of drugs can last longer with less ingestion of drugs. It can adjust and control drugs release ratio, decrease side effects of drugs, and enhance stability of drugs. HP-β-CD can be used for oral medication, injection, mucosal delivery systems (including the nasal mucosa, rectum, cornea, etc.), dermal drug delivery systems, lipophilic drugs targeting delivery, and also used as protective agent and stabilizer of protein.     2. In food and perfume industry, HP-β-CD can enhance the stability of nutritional constituent and extend active time of effective constituent. It can cover up bad smell and bad taste of nutritional constituent. It also can improve production processes and product quality.     3. In cosmetics industry, HP-β-CD can reduce stimulate of organic molecular in cosmetic to the skin and mucosa. It can enhance the stability of matter, by preventing oxidation and volatilization of nutrients.