一区二区三区中文字,欧美日韩一级黄色大片,亚洲日本A电影,A片久草,新A片网

Jinan Zhihe Fine Chemical Co.,Ltd.   Manager Li: +86-15165117603 +86-13854654186
Site language








Pharmaceutical grade Azelaic acid


Product name: Azelaic acid

State: solid powder

CAS NO: 123-99-9

Molecular formula: C9H16O4

Molecular weight: 188.22

EINECS: 204-669-1

Quality Standard:

  Standard Result Unit Note
Appearance White solidr Qualified -  
Content ≥99.00 99.72 %  
Total dicarboxylic acid content ≥99.50 99.65 %  
Monoacid content ≤0.10 0.07 %  
Melting point 107.5-108.5 107.6-108.2  
Acid value 585.0-595.0 593.7 MgKOH/g  
Warter content ≤0.5 0.3 %  
Ash content ≤0.05 0.02 %  
Heavy metal ≤0.001% 0.0008 %  
Light transmittance,440nm 97-100 98 %  
Light transmittance,550nm 97-100 98 %  
Partide Size 10um 98.0% <10um um  
The chloride ion ≤0.005% 0.003 %  
Sulfate ≤0.025% 0.020 %  
Iron ions ≤0.002% 0.0019 %  

Packing: 25kg/barrel
Advantages: Compared with Daily chemical grade, the pharmaceutical grade is mainly higher in Content, higher light transmittance, no color difference. After the refined product of Daily chemical grade, the color is uniform, the impurities are lower, and Acid Content is less than 0.1%, suberic acid Content is less than 0.05%, sebacic acid Content is less than 0.05%, heavy metal ions are less than 10ppm, chloride ions are less than 20ppm, and insolubles are less than 0.05%, which can be used in daily chemical products. And medical uses.
Main Uses:
1. Used in medicine to synthesize dermatology drugs, anti-acne inflammation and various skin pigment disorders to treat skin hyperpigmentation, such as melanoma, malignant freckles, acne, etc. Combined with anti-inflammatory drugs, vitamins, antihistamines, etc., it can improve drug penetration and improve the treatment effect.
Azelaic acid cream, Azelaic acid cream combined with vitamin A acid cream for topical topical treatment of post-burn pigmentation have a good effect.





  Previous product: Daily chemical grade Azelaic acid
  Next product: Derivative grade Azelaic acid

99超碰不卡在线播放| 爱久久在线免费观看视频| 欧美激情大屁股流白浆| AV网在线| 淫淫综合成人网| 成人77777| 看免费黄色A片| 高清A片网| 黄AV在线免费观看| av成人网站黄色电影| 亚洲免费黄色电影| 一级爱作片免费看| 动漫精品一区二区| av综合一区自拍| 黄色大片操逼| 你懂的日韩一二| 日韩成人无码影视| 青青AV偷拍| av在线观看网站| 中文字幕第98页| 玖玖妓女网| 成人a视频在线观看| 欧美WWWAAA| 欧美性爱精品五月天| 免费日韩AV在线播放| 超碰精品国产首页| 免费黄色不卡A片视频| 免看一级a怕| 免费观看无码A片| 最新免费能看到av网址| 97无码视频| 淫色综合无码| 亚洲色图2026| 一级无码内射| 超碰97在线线路| 无码A毛视频| 亚洲成人77777| 91无码入口| 91av无码电影| 欧美卡一卡二| 亚洲素人成人网|