天天视频国产免费入口|日本一区二区免费在线|亚洲成色999久久网站|久99久精品视频免费观|由伊人久久大最新发布版本|国产精品亚洲一区二区无码|欧美a锋一区二区三区久久|日韩一区二区视频免费在线观看

>> Tel : +86-936-4458369
>> Mobile : +86-13812304408  
                     +86-13776461818 
>> E-mail : sales@tongshichem.com
                     384922761@qq.com

Hydrofluoric acid
Molecular formula HF
Molecular weight 20.01
CAS    NO 7664-39-3
Characters Colorless transparent smoking liquid
Use Used to test silicon, metallurgy analysis, etc.
Specification Analytically pure 40%-50%, chemically pure40%-50%, industrial grade20%-50%
Executive standard GB/T 620-1993.
Technical index
Name
Excellent grade pure(%)
Analytically pure (%)
Chemically pure(%)
Ignition residue(Sulfate)
≤0.001
≤0.002
≤0.01
Chloride(Cl)
≤0.0005
≤0.001
≤0.005
Sulfate and sulfite(SO4)
≤0.001
≤0.002
≤0.005
Phosphate(PO4)
≤0.0001
≤0.0002
≤0.0005
Fluosilicate (SiF6)
≤0.02
≤0.04
≤0.06
Ferrum(Fe)
≤0.00005
≤0.0001
≤0.0005
Heavy metal(Pb)
≤0.0001
≤0.0005
≤0.001
Packing 500ml for bottle packing, 25kg for pail packing.
【Back】
Home | About us | Product | News | Quality | Culture | Order | Contact us | 中文版
Copyright(C)2015, Gansu Tongshi Technology Co., Ltd.(Suqian Tongshi Reagent Co.,Ltd.) All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice