中文无码精品一区二区三区,欧美亚洲777奇米四色,72人少妇精品导航,777熟女色

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

强行开发她的尿孔h| 日韩精品中文字| ass裸体欣赏pics| 国产高清在线精品一区小说| 被民工变成yin娃黄小婷| 丰满的的女16小丹| 小旅馆偷录啪啪叫床声| av香港三级级在线播放| 亚洲精品96欧美一区二区| 国语成人| 国产黄色录像播放视频| 69久久夜色精品国产69| 一区网站在线观看| 九九热99精品视频在线| bl受不了太粗太深| 顶级尤物女神粉嫩特写av| 亚洲一区日韩精品中文字幕 | 久久久亚洲精品二区三区| 大香蕉乱级| 一区二区三区不卡中文字幕| 少妇富婆一区二区三区夜夜| 亚裔熟女| 高清欧美性猛交xxxx黑人猛交| 一区二区三区不卡在线观看视频| 少妇搡bbbb搡bbbb搡冒白浆| 99精品中文字幕在线不卡| 曰韩人妻无码一区二区三区综合部| frxxee中国xxee按摩| 259luxu高跟黑色丝袜系列| 蜜桃久久伊人| 亚洲天堂中文字幕婷婷婷| 少妇久久电影| 秋霞青青电影伊人久久| 妇女久久久| 果冻传媒在线观看九一制片厂| 国产精品久久久亚洲| 国产伦精品一区二区三区2| 欧美aaaaaa午夜精品| 91精品久久天干天天天按摩| 纲手裸乳被爆白浆| free性出白浆hd白浆|