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Carbomer(synonym: Carpobol), chemical name: Carboxypolymethylene. It is high molecular weight cross-linked polymer. As a pharmaceutical and cosmetic excipient, it was included in some pharmacopeias such as US and UK ones in 1957. Now it is extensively and used in pharmacy,daily chemical industries and other industrial fields.1. Composition: Acrylic acid polymer2. Character: White loose powder with relatively strong moisture absorption and slight particular odor, soluble in alcohol, glycerol.3. Specifications: Based on China Pharmacopeia 2005 edition,Part Two Sanction number: (2005)428401 (Approved by Jinagsu Food And Drug Administration)
Item | Specification |
Appearance | White loose powder |
pH | 2.5-3.5 |
Benzene,% | ≤0.0002 |
Loss on drying,% | ≤2.0 |
Residue on ignition,% | ≤2.0 |
Heavy metal,ppm | ≤20 |
Viscosity | 15-30 |
Assay for carboxylic acid content,% | 56.0-68.0 |
US Pharmacopoeia(USP 24 NF 19)
Carbomer | Viscosity(5% neutral solution) | Usage |
934 | 30500-39400 | Preparation for topical use,gels,emulsion,suspension |
940 | 40000-60000 | Preparation for topical use,crystal gels with good clarity |
941 | 4000-11000 | Preparation for topical use,crystal gels with good clarity |
1342 | 9500-26500(1%) | Preparation for topical use, emulsification,excellent electrolyte tolerance |
934P | 29400-39400 | Controlled release prepartaion for oral,topical delivery system |
Chinese good quality Carbomer