毛片24种姿势无遮无拦,丁香色情成人免费视频网站,亚洲精品无码高潮喷水A片第一次,亚洲精品无码久久毛片

中文版 English Korean

??:+86-573-82813639, 83621335
??:+86-573-82813637
???:? ? +86-13605839392
??:sales@jlightchem.com
???:http://www.xwzoi.cn

????

 

[Alias]:

Oxydiacetic anhydride, 1,4-dioxine-2,6-dione

[Product name]:

Diglycolic anhydride

[Structural formula]:

[Molecular formula]:

C4H4O4

[Molecular weight]:

116.0722

[CAS NO]:

4480-83-5

[Packing]:

25kg/Cardboard drum

Physicochemical data

Appearance

light brown or off-white crystalline powder

Melting range °C

90-95 °C


Quality standard

Purity %HPLC

≥98

Moisture%

≤0.5

 

[ CLOSE ]
Copyright(C)2012, ??? ????? ?? All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle