亚洲精品无码少妇30p,久久久久久精品中文字幕,午夜男女爽爽影院a片免费,五月天亚洲综合

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

国产欧美一区二区精品久久久| 国语熟妇乱人乱a片久久| 无码久久久久久精品同性| 国产乱子伦精品无码专区| 日本台湾韩国三级在线播放| 亚洲片中文字幕A∨影片| 中文字幕亚洲无线码| а√天堂地址在线含羞草| 在线欧美精品视频在线观看| 精品久久久久久不卡亚洲| 久久这里只有精品好国产| 亚洲狠狠爱综合影院网页| 亚洲人成亚洲人成在线观看| 美女内射毛片在线看3d| 亚洲国产成人精品无码区| 好痒啊,射进来在线观看| 久久久在线免费观看视频| 97亚洲狠狠色综合久久久久| 亚洲成a人片在线观看中| 曰本无码人妻丰满熟妇啪| 少妇高潮喷水久久久影院| 五月天天天综合精品无码| 日本不卡的一区二区三区| 亚洲午夜成人片在线观看| 国产裸舞福利在线视频合集| 美女靠比视频在线免费看| 国产精品久久久久久久小说| 亚洲五月综合自拍区| 六月丁香婷婷久久久久久久| 亚洲AV永久无码天堂影院黑人| 久久久无码av精品亚洲a片软件| 色一情一区二区三区四区| 久久亚洲AV成人无码电影A片| 国产乱人伦偷精精品视频| 性裸交a片一区二区三区| 久久人人爽爽爽人久久久| 成人欧美一区二区三区小说| 亚洲 欧美 综合 激情| 亚洲欧美另类激情第一页| 大鸡巴狂操在线| 亚洲精品一线天粉嫩白浆|