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

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

性猛色xxxxx富婆| 广场舞大全2023最火广场舞| 又粗又大又爽又黄的视频| 欧美亚洲日本精品一区二区| 青春草在线视频免费观看| 97国产色呦呦呦夜嗨嗨| 久久亚洲一区二区三区明星换脸| 精品国产乱码久久久久久蜜坠欲下 | 国产精品内射黑丝| 少妇黄色在线| 成+人+亚洲+综合天堂| 神马影院我不卡手机版| 国产精品56p| 日本三级黄网| 国产精品99久久久久久白浆小说| 国产黄色片视频在线观看| 国产精品v欧美精品v日韩精品| 偷香高手电影免费观看| 国产又粗又猛大又黄又爽的动漫 | 大香蕉在线三级片| 99国产午夜精品| 亚洲欧美xxxx| 日产精品一卡2卡三卡4乱码| 美女久久av| 久久免费综合视频| 日韩视频在线网站| 一区网站在线观看| 东北操熟妇| 小舞的隐私免费裸体| 阿拉伯久久久WWW久久久成人免视频 | 国产破外女一级视频免费| 在线三级片久草| 插到她的屁股抽搐在线看| 久99精品久久久久久国产| 欧美图一区二区| freexxxxhdvideo中国| 日日日日日夜夜夜夜夜| 新品精品国产男人的天堂| 日韩一区日韩二区日韩三区| 国产码在线播放| 国产av一区二区三区|