伊人亚洲天堂网,亚洲片精品,国产99视频精品

PRODUCTS

Dongying Haoyang Chemical

Azelaic acid

Product name

Azelaic acid

Appearance

solid powder

CAS NO

123-99-9

Molecular formula

C₉H₁₆O₄

Molecular weight

188.22

EINECS

204-669-1

Quality Standard

	Standard	Result
Appearance	white powder solid	qualified
Content	≥99.50	99.71
Total Dibasic Acid Content	≥99.90	99.29
Monoacid content	≤0.01	0.01
Melting point	108-108.5	108.1-108.4
Acid value	590.0-595.0	593.7
Moisture	≤0.5	0.3
Ash	≤0.05	0.02
Heavy metal	≤20	10
Transmittance	98-100	99

Package

20kg/cardboard drum

Advantage

This grade of azelaic acid is obtained by further extraction and adsorption of pharmaceutical grade azelaic acid, which further reduces various impurities. All indicators are better than pharmaceutical grade azelaic acid. It can be used for quantitative control analysis of azelaic acid, with the highest content , the maximum impurity does not exceed 0.05%, and the content exceeds 99.5%. It can be used in organic synthesis as a downstream product of azelaic acid.

Use

2 This grade of azelaic acid has been washed and adsorbed, and the derivatives synthesized with this grade of azelaic acid have less impurities, good color and high light transmittance.

[ BACK ]

日韩精品视频网站,日韩黄黄网站啊啊,国语自产偷拍精品视频,国产乱码一区二区三区,大香蕉婷婷,AAA小色网,久久久一二三区,伊人伊大人,k8经典网北条麻妃