婷婷六月性,久热超碰精品五区,成年人一二三区视频,精品91在线,日韩五区久久,亚洲色图欧美色图综合,色av狠狠操丁香,中文人妻在线,97超碰资源共享

板桥市| 托克托县| 黄冈市| 呼玛县| 大安市| 晋江市| 晴隆县| 手游| 唐山市| 潜山县| 铁力市| 扶沟县| 井冈山市| 含山县| 土默特左旗| 南乐县| 七台河市| 连平县| 峨边| 福泉市| 大安市| 东台市| 白朗县| 集贤县| 盐亭县| 临夏县| 舟曲县| 浪卡子县| 繁昌县| 莒南县| 江永县| 祁连县| 邯郸市| 和林格尔县| 密云县| 揭东县| 台江县| 固安县| 玛纳斯县| 南江县| 邢台县|
 
Today is:

Products

2-Butyne-1,4-diol


Trade name: 1,4-butynediol 1,4-butynediol
Molecular formula: C4H6O2
Structural formula: OHH2C-C ≡ C-CH2OH
Physical and chemical properties: industrial butyne diol appearance was amber or brown, pure solid as colorless crystals or slightly yellow crystals. A melting point of 58 ℃, a boiling point of 238 , a flash point of 152 and a natural point of 248 ℃.

Industrial Butylene Glycol:

project
index
Qualified product
Butyne diol content%
4 5.00~ 80.00
Formaldehyde content% ≤
0.5
PH value ≥
7
Propynol content% ≤
0.25

Application: It can be used in the manufacture of a series of important organic chemical products such as 1,4-butenediol, 1,4-butanediol, n-butanol, tetrahydrofuran, Y-butyrolactone and pyrrolidone and can be used in the production of synthetic fiber , Artificial leather, medicine, pesticides, solvents and preservatives. Butylene glycol itself is a good solvent, you can also do in the electroplating industry brightener.

Packing: iron drum, 200kg / barrel.

Note: try to avoid contact with the human body.

 

Last page:1,4-Butenediol (Crude) Next page: Propargyl alcohol