日韩 一区 在线,色香欲天天影视综合网,性欧美丰满熟妇XXXX性久久久,午夜视频国产在线观看

Welcome to Fujian Yongjing Technology Co., Ltd. the website!

Contact us

Add: 18#, Xin'An Road, Shaowu City, Fujian, China
International Trade Dept.
Tel: +86-599-6655932/6654968
Fax: +86-599-6654591
Home Trade Dept. 
Tel: +86-599-6654866/6654968
Fax: +86-599-6655755
High-purity Chemicals Dept.
Tel: +86-599-6655536/6654968
Fax: +86-599-6655755


Products

Chemical Reagent Ammonium Bifluoride

Quality StandardGB/T 1278-1994

Molecular FormulaNH4HF2                             Molecular Weight57.05

Item

Index

A.R.

C.P.

Ammonium Bifluoride (NH4HF2)   w/%   ≥

98.0

97.0

Ignition residue(Sulfate) w/%   ≤

0.01

0.05

Chloride(Cl) w/%   ≤

0.001

0.005

Sulfate(以SO4計(jì))  w/%   ≤

0.005

0.01

Fluorosilicate(SIF6) w/%   ≤

0.2

0.5

Fe w/%   ≤

0.001

0.005

Heavy metal(Pb)  w/%   ≤

0.002

0.005

Properties
The product is a rhombohedra or flaky crystal. It can deliquesce easily and dissolve easily in water. It can dissolve in alcohol slightly. It can be resolved when it is affected by the heat or it is in hot water. It can corrode glass. It’s poisonous.
Application
The product can be used for glass frosting or extracting rare elements and used as a preservative or a mordant.
Storage
Moisture-proof and sealed preservation is needed.
Transport
It should be treated as inorganic poisonous goods.
Packing
The product is packed in a 25kg polythene plastic bag. Also pack it on consumer requests.

【Back】

Copyright(C)2017,Fujian Yongjing Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice

色五月丁香六月欧美综合| 久久午夜夜伦鲁鲁片无码免费| 午夜免费视频又黄又刺激| 日韩人妻中文无码一区二区| 欧美日韩一区二区在线视频播放| 国产伦精品一区二区三区免.费| 国产成A人片在线观看视频下载| 欧美xxxx印度人| 国产汉服被啪福利在线观看| 日韩精品无码一区二区中文字幕| 人禽伦免费交视频播放| 差差软件下载免费| 欧美激情一区二区亚洲专区| 天堂在线男人天堂| 日韩漫画在哪免费看| 日韩中文在线中文网三级| AV无码中文字幕不卡一区二区三区| 国产精品自拍亚洲| 龚玥菲版新梅瓶国语在线观看| 色屁屁一区二区三区视频国产| 韩国成人理伦片免费播放| 国模无码视频一区二区三区| 午夜理论片一区二区三区| 国产视频日韩| 亚洲AV无码国产精品色午友在线| 精品日韩国产伦一区二区三区| а√天堂资源中文在线官网| 欧美日韩不卡视频一区二区三区| 亚洲欧美精品午睡沙发| 国产成人无码AV大片大片在线观看| 少妇高潮潮喷到猛进猛出小说| 精品无码三级在线观看视频| 国产一区二区三区在线电影| 后入内射国产一区二区| 欧美伊人网| 精品国产自在在线午夜精品| 国产无圣光一区二区三区四区| 麻花传媒MV国产免费观看视频| 老熟妇高潮一区二区三区| 少妇BBBB| 精品国产品香蕉在线观看75|