亚洲夂夂婷婷色拍WW47,性做久久久久久免费观看,夜夜高潮夜夜爽夜夜爱爱,精品亚洲欧美无人区乱码

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

国产精品久久无码一区二区三区网| 高清毛片aaaaaaaaa片| 国产av一区二区三区最新精品| 亚洲午夜av久久久精品影院色戒| 狠狠色综合7777久夜色撩人| 亚洲国产成人精品女人久久久| 精品国产乱码久久久久久浪潮| 亚洲av无码片vr一区二区三区 | 亚洲综合无码一区二区三区不卡| 日本精品少妇一区二区三区| 久久夜色精品亚洲噜噜国产av| 精品香蕉99久久久久网站| 中文av人妻av无码中文| 少妇人妻88久久中文字幕| 亚洲欧美精品无码一区二区三区| 精品人妻av区波多野结衣| 亚洲AⅤ无码专区在线观看Q| 午夜人妻久久久久久久久| 久久国产精品波多野结衣av | 一区二区三区在线 | 网站| 亚洲gv猛男gv无码男同| 亚洲国产精品精华液| 年轻又漂亮的后妈2| 蜜臀久久av无码牛牛影视| 欧美VPSWINDOWS另类| 人妻斩| 欧美日韩国产| 人妻杨丽的无奈献身| 久久久久久人妻毛片a片| 勾搭已婚妇女露脸对白在线| 性 色 国产 视频| 八戒八戒在线观看免费完整版| 麻豆av一区二区天美传媒| 国产又爽又大又黄a片| 蜜臀av人妻国产精品| 给我免费的视频在线观看| 欧美日韩在线视频一区| 国产精品久线在线观看| 国产av无码专区亚洲av| 亚洲av午夜福利精品香蕉麻豆 | 亚洲av毛片一区二区三区|