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

亚洲欧洲国产视频一区二区| 黄色日韩欧美在线观看| 日韩精品中文字幕电影| 久久热这里只有精品网站| 欧美日韩另类中文字幕| 国产三级国产剧情国产av| 国产成人三级视频网站| 欧美国内日本一区二区| 免费国产中文字幕黄网站| 国产一区二区伦理视频| 男女午夜激情四射视频| 国产精品一区二区久久蜜桃麻豆| 精品午夜免费福利视频| 国产熟女碰碰人人a久久| 亚洲欧美日韩一区中文天国| 先锋影音女同中文字幕| 日韩欧美亚洲国产资源| 欧美亚洲另类在线日韩国产| 亚洲国产精品一区二区三| 久久成人影院免费观看| 国产亚洲综合久久系列| 国产原创剧情免费观看av| 中文字幕日韩欧美第一页| 欧美成人精品高清在线| 一区二区三区在线观看日韩| 欧美一区二区精品网站 | 日本精品av一区二区| 日本在线一区二区三区| 91女厕偷拍女厕偷拍| 亚洲男人天堂在线观看| 性生活的视频免费观看麻豆| 久久99精品久久久国产| 黄色高清无遮挡在线观看| 亚洲蜜桃精品一区二区三区| 在线蜜臀av中文字幕| 国产精品第一区第二区| 欧美一区二区三区人妻激情| 国产乱码精品一区二区三区爽爽爽 | 欧美精品日韩精品一区二区| 午夜神马福利激情视频| 亚洲国产精品视频中文字幕|