| CHINA SHENGDA CHEMICAL FACTORY |
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Item Number:
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Diazo S, Coupler 1, Coupler 5, Coupler 11 |
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Product Name:
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Diazo S, Coupler 1, Coupler 5, Coupler 11 |
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Description:
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We are ShengDa Chemical Factory,http://www.abroadtrade.com.,contact with:lance755@hotmail.com.supply you the diazo chemistry: Diazo S, coupler 1, coupler 5, coupler 11.
Diphenylamine-4-diazonium salt(diazos)
Cas no:4477-28-5
Molecular weight:293
Molecular formula: C12h11n3o4s
Specifications:
Moisture: <0.5%
Aspect: Yellow powder
Assay:95%(min)
Melting point:168-170*c(dec)
2,3-dihydroxynaphthalene-6-sulfonate(coupler1)
Cas no:135-53-5
Use it is mainly used as coupler for diazo photosensitive pater, it also used as additive off food colour and plating.
Content:99% 98% 97% 90% 85%
M. W:262
Fe:10ppm 20ppm 40ppm
Aqueous solution: Light yellow transparent liquid
Ph value:3-6
Organic impurity:1%
Storage: Stored in dark dry place for two years
Appearance: White powder or crystal.
Sodium 2,7-dihydroxyl naphthalene-3,6-disulfonate(coupler5)
Cas no:7253-21-1
Molecular formula: C10h6na2o8s2
Uses: Used as blueprint coupling ingredient.
Content: >97%
Molecular weight:364
Iron:10ppm
Moisture:1%
Appearance: Cyan grey to greyish white powder.
2,3-dihydroxyl naphthalene(coupler11)
Cas no:92-44-4
Molecular formula: C12h12o2
Uses: Used as dye and pharmaceutical intermediate, hair dye.
Purity:98%
Molecular weight:160
Moisture:1%
Iron ion:10ppm
Melting point:162*c-164*c
Appearance: Greyish white or pinkish powder.
Packing: Export-level woven bag lined with plastic bag, net weight:25kg or 50kg/bag.
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