国产高清一区二区精品-日本道精品一区二区三区-精品少妇午夜福利视频-亚洲午夜av福利精品

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

很黄无遮挡在线免费网站| 国产高潮精品呻吟久久av| 久久精品国产亚洲七七| 免费可以看的黄片欧美| 中文字幕人妻日韩在线| 国产美女无遮挡免费网站| 国产成人亚洲综合色影视| 熟女人妻视频一区二区| 九九九热在线观看视频| 欧美v日韩v亚洲综合国产高清| 日韩亚洲国产激情一区二区| 91国产精品视频在线| 欧美三级精品三级在线| 在线观看91精品国产秒播| 久久精品人妻中文av| 少妇互射视频免费视频| 久国产亚洲精品久久久极品| 亚洲码与欧洲码一二三| 成人深夜福利视频在线| 中国日本欧美最黄大片| 日韩区一区二在线视频| 未满十八勿进黄网观看| 欧美影院波波在线影院| 国产精品网站在线观看| 白白色成人永久在线观看视频| 天堂av好男人亚洲精品| 精品人妻av中文字幕乱| 日本的一级片一区二区| 顶级少妇做爰片高潮丸| 丰满人妻被黑人猛烈进入| 国产婷婷精品一区二区| 国产日韩手机在线不卡视频| 亚洲国产精品性色av| 精品亚洲国产成人av| 少妇一夜一次一区二区| 伊人久久大香线蕉av色婷婷色| 国产一区二区三区精品久| 中文字幕乱码亚洲2019| 国产一区在线免费在线观看| 国产成人亚洲精品另类动态| 久久伊人这里都是精品|