久久精品视频免费观看_中国女人一级毛片_在线观看日本黄色_少妇与子乱在线观看_精品一区二区在线观看_日韩亚洲精品在线观看

Sodium metabisulfite

Quality standard: HG/T2826-2008


Item

National standard
HG/T2826-2008

Enterprise current value

Superior grade

Top grade

Main content (as Na2S2O5),%

≥96.5

≥95.0

≥97.0

Iron content (as Fe),%

≤0.005

≤0.010

≤0.002

Water insolubles content,%

≤0.05

≤0.05

≤0.02

Arsenic (as As) content, %

≤0.0001

≤0.0001

 

Molecular formula: Na2S2O5
Molecular weight: 190.10
Appearance: white crystal powder
Net weight: 25, 50, 1000 kg/bag or according to customer requirements.

 

To use
Used for the production of insurance powder, sulfadimethylpyrimidine, caprolactam, etc., as well as chloroform, phenylsulfoxide and benzaldehyde purification; an ingredient used in the photographic industry as a fixing agent; for the production of vanillin in the spice industry; used as preservative in brewing industry, rubber coagulant and cotton cloth bleaching dechlorination agent; organic intermediates, dyes, tanning used as reducing agents used in electroplating industry, oilfield wastewater treatment and as mineral processing agent in mines, etc.


In industry
Used for printing and dyeing, organic synthesis, printing, leather, pharmaceutical and other departments; Used as preservative, bleach and loose agent in food processing.


Used as chemical reagent
(printing and dyeing and photography, etc.), used as bleaching agent, mordant, reducing agent, rubber coagulant, also used in organic synthesis pharmaceutical and spices, etc


Business license

Company Add: Shijiazhuang New and High-tech Industrial Zone, Hebei province
P.C.: 050000  Contact: Director Ren +86-13832390234
Manager Ren +86-13603311335/15027769680   Fax: +86-311-86581118
E-mail: 250768848@qq.com   Website: www.xueyaofeng.com.cn

Copyright(C)2021,Shijiazhuang Weifeng Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle 31fabu Copyright Notice

weifeng technology
Business license
weifeng technology

Company Add: Shijiazhuang New and High-tech Industrial Zone, Hebei province
P.C.: 050000  Contact: Director Ren +86-13832390234
Manager Ren +86-13603311335/15027769680   Fax: +86-311-86581118
E-mail: 250768848@qq.com   Website: www.xueyaofeng.com.cn

Copyright(C)2021,Shijiazhuang Weifeng Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle 31fabu Copyright Notice

主站蜘蛛池模板: 国产成人亚洲在线观看 | 很黄很色的动态图 | 国产精品一级黄色片 | 成人H动漫精品一区二区无码 | japanese成熟丰满人妻 | 久久久精品国产免费观看同学 | 一级毛片大片 | 国产高清综合 | 日本特黄a级高清免费大片 一区二区不卡 | 亚洲精品一品区二品区三品区 | 欧美精品自拍 | 欧美疯狂做受XXXXX高潮 | 国产成人AV乱码在线观看 | 完美世界在线观看免费完整 | 欧美人与禽ZOZ0性伦交 | 亚洲激情| 大香伊在人线免97 | av人摸人人人澡人人超碰小说 | 377人体粉嫩噜噜噜 国产精品极品 | 一本久道综合在线无码88 | 日本精品一二三 | 免费的av网站在线观看 | 国产福利在线不卡 | 国产日日操 | 97精品久久天干天天 | 大胸美女白丝被到流水软件 | 曰韩观看免费 | 成年人在线观看免费视频 | 国产人成尤物在线免费观看 | 粉嫩av一区二区在线播 | 久久久久亚洲一区二区三区 | 人人妻人人爽人人做夜欢视频 | 国产伦一区二区三区视频 | 中文字幕精品亚洲字幕资源网 | 天天天欲色欲色WWW免费 | 国产91精品高清一区二区三区 | 国产一级18片视频 | av青青操 | 中国白嫩精品bbwbbw | 亚洲综合成人婷婷五月网址 | 免播放器在线观看av |