超碰97人妻,亚洲欧美久久精品19p,白俄罗斯毛茸茸高清一区不卡在线看 ,久青青在线国产视频

高郵多彩化工有限公司歡迎您!
顏料黃180,顏料橙64,顏料紅254,顏料紅122,顏料黃151,顏料黃139
顏料服務熱線:
13305257800
Whitening Agent OB-1
  • Whitening Agent OB-1

Whitening agent OB-1

Fluorescent whitening agent OB-1Chemical name: 2.2'- (4,4'- two styryl) bisbenzoxazoleStructure:CAS number: 1533-45-5EC number: 216-245-3Molecular formula: C28H18N2O2Molecular weight: 414Nature: This product is yellow crystal powder. Fluorescent blue and white light, melting point 353 C. There is no odor, no odor and stable performance. The maximum absorption wavelength of 374nm. is highly fluorescent, and the emission wavelength is 434nm, and the technology is not.Appearance: yellow cry

Fluorescent whitening agent OB-1
Chemical name: 2.2'- (4,4'- two styryl) bisbenzoxazole
Structure:
CAS number: 1533-45-5
EC number: 216-245-3
Molecular formula: C28H18N2O2
Molecular weight: 414
Nature: This product is yellow crystal powder. Fluorescent blue and white light, melting point 353 C. There is no odor, no odor and stable performance. The maximum absorption wavelength of 374nm. is highly fluorescent, and the emission wavelength is 434nm, and the technology is not.
Appearance: yellow crystal powder
Color: bright lanliang (similar to standard)
Melting point: 351-353 C
Solid content: 99.5%
Fineness: through 100 mesh
Usage: mainly used for polyester whitening solution, especially for whitening polyester fiber, polyester / cotton and other blended fabric whitening, whitening plastic products for.
Packing: 10KG cardboard drum, or packaging according to user's requirements.

国产原创啪啪啪| 99精品日本| 精品人妻一区二区三区在线,少妇| 欧洲亚洲成人免费在线观看视频| 天天干天天日天天操天天天添| 艹逼网站视频| 黄色小说在线观看视频| 中文字幕中文字幕久久久久久人妻| 色色综合资源网| 美女免费日B视频| 波多野结衣中文字幕一区二区三区| 伊人成人精品在线| 久久天天亚洲综合网1| 午夜网址 一二三区| 色久综合 av| 亚洲国产精品久久久久秋霞1| 日巨乳老熟妇| 国产三级精品视频在线观看| 国产免费黄色av网| 麻豆影视九九无码| 丝袜美腿AV在线| 人妻电影av一区| 我要看天堂AV| 欧洲 美洲 日韩 国产| 狼友精品| www.中文字幕AV| 最新的日韩欧美精品女同| 色呦呦精品五月天| 久久99黄色电影| 艹b视频在线观看免费| 九一午夜精品| 亚洲 激情| 一级黄片区| 青青草AV一区二区三区| 亚洲涩图一区二区| 欧美做爱高潮97| 超碰天天在线| 国产粉嫩久久久久久久| .精品人妻一区| 午夜免费监控不卡黄色录像| 综合亚洲二区人一区|