国产亚洲av人片在线观看,最新国产av无码专区亚洲,欧美激情内射喷水高潮,中国极品少妇videossexhd

Qingdao Unichem International Trade Co., Ltd.
Add: Hua Run Mansion A, No.6, Shandong Road, Qingdao, China.

Tel: 0086 532 85819859 85826252 88789568
Fax: 0086 532 85816786
E-mail: president@sinounichem.com Contact Person: Zhang Huanyu
Http://www.tpyad.com

FURAN SERIES
TDS OF TETRAHYDROFURAN THF
·pre
2024-1-24 4:35:58 | FROM:admin
·next

CAS RN.:109-99-9
Molecular formula: C4H8 O
Produced from 1,4-butanediol odor. Miscible with water and most organic solvents. Flammable. May cause peroxide explosion in air.

Specification:
Purity
Water
Color (ALPHA)
Peroxides
99.9% min
0.03% max
10 max
2ppm max
 
Use: Solvent for high polymers, especially polyvinyl chloride. As reaction medium for Grignard and metal hydride reactions. In the synthesis of butyrolactone, succinic acid, 1,4-butanediol diacetate. Solvent in histological techniques.

Packaging: iron barrel, net weight 180kg.

Storage: THF shall be kept well closed in a cool, dry and ventilated place. Avoid flame, heat and static. Keep away from oxidant and strong acid. Flammable labeling is required.
.

欧美老熟妇乱大交xxxxx| 中文 在线 日韩 亚洲 欧美| 老地方在线观看免费视频社区| 日韩人妻无码精品久久| 无码人妻一区二区三区免费N鬼沢| 亚洲欧美在线制服丝袜国产| 五月综合激情婷婷六月| 国产成人无码一区二区在线播放| 中文字幕乱码熟妇五十中出| 狠狠色噜噜狠狠狠狠97俺也去| 特级西西人体444www高清大胆| 国产黑色丝袜在线观看下| 英语老师解开胸罩喂我乳| 国内偷自第一区二区三区| 精品免费看国产一区二区| 被黑人伦流澡到高潮HNP动漫| 熟女少妇丰满一区二区| 亚洲国产AV无码一区二区三区| 337P日本欧洲亚洲大胆张筱雨| 热RE99久久精品国产66热| 欧美巨大极度另类| 福利姬国产精品一区在线| 下药伦姧在线观看无码| 夜夜高潮夜夜爽高清视频| 国产黄在线观看免费观看网站不卡| 国产日产欧产美韩系列| 亚洲伊人久久成人综合网| 夜夜夜夜猛噜噜噜噜噜试看| 亚洲欧洲久久av| 国产成a人亚洲精v品无码| 男女爽爽无遮挡午夜视频| 日本WWW一道久久久免费| 人妻巨大乳hd免费看| 人妻系列影片无码专区| 免费人成年激情视频在线观看| 成人一区二区免费视频| 骚虎视频在线观看| 久久国产免费观看精品3| 国产免费看插插插视频| 精品人人妻人人澡人人爽牛牛| 亚洲无人区码一二三码区别|