naphthol as-itr货号：p1018数量：大量synonym2-hydroxy-3-naphthoyl-(5’-chloro-2’, 4’-dimethoxy) anilinecas no.92-72-8molecular formulac19h16no4clmolecular weight357.79appearancelight grey homogeneous powderinitial m.p. as dry≥191.5℃purity≥97%usesmainly used for producing organic pigments and also used for dyeing on cotton yern.
naphthol as-itr
items: naphthol as-itr
c.i. 37550
cas: 92-72-8
chemical formula: c19h16clno4
appearance: light grey or green powder
color shade(with standard):similar
strength:100±3%
purity:≥98%
melting point:≥193℃
insoluble in alkali:≤0.5%
bon acid content:≤0.4%
reidue on 60 msieve(or 80 masrequest):≤5%
色酚 as-kbcas号:135-63-7英文名称:n-(5-chloro-2-methylphenyl)-3-hydroxynaphthalene-2-carboxamide英文同义词:c.i.37526;naphtol as-kb;napthol as-kb;naphtanilide kb;naphthol as-kb (c.i. 37526);azoic coupling component 21;c.i.azoic coupling component 21;5'-chloro-3-hydroxy-2-naphtho-o-toluidide;5′-chlor-3-hydroxy-2′-methyl-2-naphthanilid;5'-chloro-3-hydroxy-2'-methyl-2-naphthanilide中文名称:色酚 as-kb中文同义词:色酚as-kb;色酚 as-kb;冰染偶合组分 21;5'-lv-3-ting基-2'-jia基-2-萘苯胺;5'-lv-3-ting基-2'-jia基-2-萘甲酰苯胺;n-(5-lv-2-jia基ben基)-3-ting基-2-萘甲酰胺cbnumber:cb7505746分子式:c18h14clno2分子量:311.77mol file:135-63-7.mol色酚 as-kb化学性质熔点 :244 °c色指数 :37526
chitosan oligosaccharide
appearance:yellow and light brown
odor:sightly smell as acetic acid
molecular weight: less than 1500,less than 3000,less than5000
degree of polymerization (dp):2-10
particle size:≥100 mesh
moisture:≤10%
residue on ignition：≤1%
ph：5.5-7.0
contents≥85%
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