I. Introduction Chinese name: imidazolidinyl urea Chinese Nickname: very beautiful 115 English name: Imidazolidinyl Urea CAS #: 39236-46-9 Formula: C11H16N8O8 Second, technical indicators Item Index Appearance white hygroscopic powder flowability, microstrip formaldehyde odor acidity (PH) 6.0-7.5 color (black by APHA) <15% nitrogen content 26.0-28.0% ≤ ≤3.0 Residue on ignition 3.0% Loss on drying three, bacteriostatic properties of bacterial names MIC (ppm) of colorectal Egypt Xi coli (Escherichia coli) 500 Pseudomonas aeruginosa (pseudomonas aeruginosa) 500 Staphylococcus aureus (Siaph aureus) 500 Bacillus subtilis (Bacillus subtitis) 250 Aspergillus niger (Aspergillus niger)> 1000 Candida albicans (Candida albicaus) > 1000 four products used in the oil low solubility. PH in a wide range of stable, Yang and has bactericidal activity. And other preservatives different, with the formation of thin film properties. In the cosmetic industry, following parabens, the most widely used preservatives. With a spectrum antibacterial efficiency, PH value 3-9 range. Unlike most cosmetic products can ah compatibility, various types of surfactants can adapt. Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and other bacteria have inhibitory effect, and methylparaben, propylparaben mixed with better results, can improve the corrosion effect. To skin non-toxic, non-allergenic, non-irritating, safe to use. Widely used in various types of cream, cream, honey and other personal care products and shampoo, conditioner, etc. in cleaning products. In cosmetics is usually 0.2% to 0.3%, the maximum amount of not more than 0.6%. And 0.2% as methyl paraben and propyl paraben 0.1% with the use, can greatly improve corrosion resistance. Paraben load phase dissolved in water, propylparaben added dissolved in the oil phase, a very beautiful -115 after emulsification, and after adding a small amount of water to dissolve. Fifth, packaging and storage drum: 25 kg / barrel. Products in the packaging is intact and not from the closure of the case, to avoid freezing environment, placed in a dark, cool, dry place at room temperature for a period of 2 years.