日本做暖暖视频高清观看_国产一区?_69堂精品_成人做爰视频WWW网站_欧美午夜刺激影院_波多野结衣AV手机在线观看

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.51meiwei.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.51meiwei.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: 日韩精品人妻系列无码专区免费 | 日韩极品一区 | 亚洲加勒比无码一区二区 | 国产1区2区3区4 | 免费看成人毛片 | 一本久久a久久精品不卡 | 99精品视频在线免费播放 | 国产亚洲高清一区 | 国内精品久久久久影院免费 | 欧美伊人网 | 欧洲人免费视频网站在线 | 国产男女嘿咻视频在线观看 | 中文字幕av无码专区第一页 | 亚洲国产欧美在线 | 伊人久久无码中文字幕 | 久久毛片 | 精品欧美二区 | 亚洲视频大全 | jizz成熟丰满韩国少妇在线 | 欧美熟妇喷潮xxxx | 亚洲一级特黄 | 人人看黄色| 日本激情视频图片小说 | 蜜臀久久蜜臀av国内精品久久久 | 人妻内射AV六九无码一零八零P | 精品乱码一区内射人妻无码 | 精久久久久久久 | 日韩看片| 国产中文字幕亚洲 | 日韩精品视频国产 | 中文日产幕无线码一区二区 | 久久r免费视频 | 国产AⅤ爽AV久久久久玉浦团 | 国产黄毛片| 国产妓女一级在线视频 | 老师脱了内裤让我爽了一夜 | 国产亚洲精品久久久久久久久久 | 91夜色在线?看 | 5g多人运动罗志祥免费观看影视网 | 国产区精品| 国产91精品网站 |