a. chemical name: ipp b. molecular formula:ch3(ch2)14cooch(ch3)2 c. molecular weight:298 d. property: colorless oily liquid,soluble in alcohol and aether, insoluble in water. e. quality standard:enterprise standard f. special gravity:(d204 ):0.850-0.855 g. refractive index:(n20d ):1.435-1.439 h. acid number(mgkoh/g):≤0.3 i. heavy metal (base on pb)%:≤0.0005 j. as %:≤0.0002 k. use:it has the functions of moistening when used in cosmetics. use level in cosmetics:2-10%. l. storage:stored in cool and dry place. kept in airproof condition m. packaging:packed in polyethylene plastic pail(with inner cover), 50kg per pail or in polyethylene plastic pail(with inner cover), 175kg per pail.