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

Reagent Ammonium Fluoride

Quality StandardGB/T 1276-1999

Molecular FormulaNH4F                Molecular Weight37.04

Item

Index

G.R.

A.R.

C.P.

Ammonium Fluoride (NH4F) %  ≥

96.0

96.0

95.0

Clarify Degrees Test

qualified

qualified

qualified

Ignition Residue(Express as SO4) %   ≤

0.005

0.02

0.05

Free Acid(Express as NH4HF2) %   ≤

0.2

0.5

1.0

Free Alkali

qualified

qualified

qualified

Chloride(Cl) %   ≤

0.0005

0.005

0.01

Sulfate(Express as SO4) %  ≤

0.005

0.01

0.02

Fluosilicate %  ≤

0.08

0.30

0.60

Fe  %  ≤

0.0005

0.002

0.004

Heavy metal(Express as Pb) %  ≤

0.0005

0.001

0.002

Properties
The product is a white powdery 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 10kg or 20kg 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

中日韩中文字幕一区二区| 日本一区二区三区在线观看视频| 亚洲久久精品中文字幕| 亚洲精品香蕉久久情趣| 日本成人在线播放网站| 日韩欧美亚洲一区二区| 巴西老熟女大奶子多毛逼| 亚洲黄色av电影在线| 理论三级麻豆国产在线| 亚洲人妻av一区二区三区| 国产原创av剧情在线观看| 人妻中文字幕日韩av| 亚洲精品中文字幕一二三| 最新免费观看男女啪啪视频| 国产精品黄色片在线观看| 五月婷婷丁香花综合网| 亚洲美腿丝袜综合在线| 午夜高清影院免费观看| av一区二区三区网站| 在线一区二区三区高清视频| 色婷婷久久综合中文久久| 中文字幕日韩欧美一区| 国产乱子一区二区三区| 日韩精品亚洲专区在线观看| 国产成人综合亚洲欧美在线| 2021久久国产综合精品青草| 亚洲女人淫片在线观看| 日韩在线视频观看一区二区三区| 一区二区三区精品人妻| 神马免费午夜福利剧场| 日韩精品一区二区三区四区蜜桃| 欧美午夜视频一区二区福利| 偷怕自拍在线免费观看| 久久香蕉国产线看观看亚洲| 中文字幕一区二区精品区| 日韩欧美国产午夜精品| 99精品国产一区二区青青性色| 亚洲精品国产精品粉嫩| 国产精品一区二区免费式| 五月婷婷丁香视频在线| 日韩一区精品视频一区二区|