I. Introduction; Chinese name: diazoimidazole alkylurea Chinese Nickname: very beautiful -Ⅱ English name: Diazolidinyl Urea CAS #: 78491-02-8 Formula: C8H14N4O7 Second, technical indicators Item Index Appearance white hygroscopic fluidity powder, microstrip smell of formaldehyde acidity (PH) 6.0-8.0 color (black by APHA) <15% nitrogen content of 19.0 to 21.0 Residue on ignition% ≤ 3.0% Loss on drying 3.0 three, bacteriostatic properties of bacterial names MIC (ppm ) Escherichia coli (Escherichia coli) 250 Pseudomonas aeruginosa (pseudomonas aeruginosa) 250 Staphylococcus aureus (Siaph aureus) 250 Bacillus subtilis (Bacillus subtitis) 250 Aspergillus niger (Aspergillus niger)> 800 Candida albicans ( Candida albicaus)> 1000 Fourth, the product should be using is the most widely used international eighties new preservative, approved by the US and the EU. It has a broad-spectrum antimicrobial activity against bacteria, yeasts, molds and fungi kill suppression effect. Especially against Gram bacteria, Escherichia coli with special effects. Its bactericidal activity is imidazolidinyl urea 2-4 times, and the PH in a wide range, does not affect its bactericidal activity inhibition. Very beautiful -Ⅱ turning powder soluble in water, soluble in propylene glycol and glycerin, insoluble in ethanol, almost all the ingredients in cosmetics compatibility, experimental results show very beautiful -Ⅱ inhibitory ability against cosmetics surfactant agents, such as protein supplements and herbal liquid impact. Can be used in cream, gel, shampoo, conditioner, liquid cosmetics and eye cosmetics remain attached type and wash products. Rich in nutrients such as corrosion of high-end cosmetics and because it is difficult, it is recommended the product with parabens and IPBC mixed use, will constitute its good spectrum antibacterial agent system. Is generally added in an amount 0.1-0.3%, preferably added at less than 50 ℃. 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.