久久爱综合久久爱久久爱,间谍过家家第二季在线观看免费,国产美女在线精品免费观看网址,欧美+日本+国产+在线观看

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

High Quality Ammonium Fluoride

Quality Standard

Molecular FormulaNH4F               Molecular Weight37.04

Item

Index

Ammonium Fluoride (NH4F) w/%  ≥

95.0

Free Acid(as HF) w/%  ≤

1.0

Ammonium fluosilicate[as(NH42SIF6] w/%  ≤     

0.5

Sulfate(SO4) w/%  ≤                                          

0.2

Moisture(H2O) w/%  ≤     

4.0

Insoluble solid in water  w/%  ≤

0.0015

Ignition residue w/%  ≤

0.2

Fe w/%  ≤

0.01

Heavy metal(as Pb) w/%  ≤

0.006

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

免费a级毛片无码a∨免费软件| 成人无码精品一区二区在线观看| 欧美人与劲物XXXXZ0OZ| 99精品久久久中文字幕| 亚洲一区二区三区AV无码| 批日出水免费观看40分钟| 成人性生交大片免费看9| 成人无码精品1区2区3区免费看| 中国人免费人做人爱的视频| 国产精品免费视频| 99热婷婷国产精品综合| 精品无码久久久久成人漫画| 国产AV无码专区亚洲AV麻豆| 一本色道久久综合亚洲精| 国产午夜三级一区二区三| 亚洲精品无码专区在线| 无码夜色一区二区三区| 国产激情一区二区三区app| 无遮挡国产高潮视频免费观看| 国产人妻丰满熟妇嗷嗷叫| 亚洲中文字幕久久精品无码喷水| 一边摸一边做爽的视频17国产| 乱码丰满人妻一二三区麻豆| 亚洲精品国产福利一二区| 国产AV无码专区亚洲AV毛网站| 久久久久无码精品国产AV蜜桃1 | 一区二区亚洲精品国产精华液| 国产精品久久免费观看勾搭| 国产精品成人无码免费| 人狗胶配方大全免费| 亚洲AV无码一区二区二三区∝| 国产精品美女一区二区三区| 亚洲尺码与欧洲尺码区别入口跳转| 国产精品久久无码一区| 久久精品AⅤ无码中文字字| 成人在色线视频在线观看免费社区| 国产超碰人人模人人爽人人添| 久久婷婷五月综合色奶水99啪| 四虎成人精品国产永久免费无码 | 国产成人精品白浆久久69| 狂野欧美性猛交免费视频|