东京热av人妻无码,国产在线视频一区二区三区,亚洲av无码一区二区二三区 ,日本人丰满xxxxhd

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

Industrial Ammonium Fluoride

Quality StandardGB28653-2012

Molecular FormulaNH4F                 Molecular Weight37.04

Item

Index

First grade

Qualified product

Ammonium Fluoride (NH4F) w/%  ≥

95.0

93.0

Free Acid(as HF) w/%  ≤

1.0

1.0

Ammonium fluosilicate[as(NH42SIF6]w/% ≤

0.5

1.0

 

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 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

亚洲av无码日韩av无码网站冲| 色戒假戏真做7分27秒视频| 狠狠躁日日躁夜夜躁2022麻豆| 国产美女在线精品免费观看| 同桌上课脱裙子让我帮他自慰| 美艳人妻办公室抽搐呻吟| 无码人妻精品一区二区三区蜜桃| 12—13女人做a片| 末成年娇小性色xxxxx| 精品亚洲国产成人蜜臀AV | 国产真实强被迫伦姧女在线观看| 国产精品免费精品自在线观看| 欧美肥妇BWBWBWBXX| 无码人妻aⅤ一区二区三区| 少妇无码久久一区二区三区| 四虎成人精品在永久免费| 中文在线А天堂中文在线新版| 亚洲中文字幕乱码熟女在线| 精品无码成人片一区二区98| 国产又粗又猛又爽又黄| 精品无码一区二区三区亚洲桃色 | 500篇艳妇短篇合午夜人屠| 色偷偷人人澡人人爽人人模重口| 国产色综合久久无码有码| 老女人做爰全过程免费的视频| 久久久久亚洲av无码网站| 中国极品少妇xxxxx| 人妻巨大乳hd免费看| 国产freexxxx性播放麻豆| 香蕉久久一区二区不卡无毒影院| 免费无码又爽又刺激高潮| 少妇连续高潮抽搐| 开会时老板不让穿内裤随时做| 15学生初次破初视频免费| 欧美日韩视频在线第一区| 24adc年龄确认18周岁进入| 无码综合天天久久综合网色吧影院| 国产精品沙发午睡系列99| 国产精品白浆无码流出| 亚洲AV乱码一区二区三区林ゆな| 精品无码av无码免费专区|