国产色 在线I777视频在线观看I日韩视频中文字幕在线观看I五月花激情I91av电影网I亚洲精品裸体I欧美综合干I中文字幕123区I日韩免费在线视频I久久婷婷国产I最新在线你懂的I日韩一级片网址

[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