亚洲精品乱码I成人免费在线网Ia'aaa级片在线观看I亚洲午夜av电影I国产精品一区二区62I三级黄色在线观看I中文字幕丝袜

[Product name]:

Pentaerythritol diformal;
Formaldehyde,cyclic diacetal with pentaerythritol; 5,5'-spirobis(1,3-dioxane); 5,5'-spirobi<1,3-dioxane>;
Pentaerythrit-diformal;

[Structural Formula]:

[Molecular Formula]:

C₇H₁₂O₄

[Molecular Weight]:

160.168

[CAS NO]:

126-54-5

[Packing]:

Properties

Appearance

White crystal powder

Melting range ℃（1.5 mmHg）

80-83

Quality Specifications

Purity%

≥98.0

Moisture %

  ≤0.5