茜素紅 - 簡介
CAS: 130-22-3
分子式: C14H7NaO7·H2O
分子量: 360.28
中文名稱: 9,10-二氫-3,4-二羥基-9,10-二氧代-2-蒽磺酸單鈉鹽
茜素紅
茜素磺酸鈉
茜素S
英文名稱: Sodium 3,4-dihydroxy anthraqinone-2-sulfonate
Alizarin red
2-Anthracenesulfonic acid, 9,10-dihydro-3,4-dihydroxy-9,10-dioxo-, monosodium salt
9,10-dihydro-3,4-dihydroxy-9,10-dioxo-2-anthracenesulfonic aci monosodium s
9,10-dihydro-3,4-dihydroxy-9,10-dioxo-2-anthracenesulfonic acid monosodium sa
acid red alizarine
ahcoquinone red s
alizarin carmine (biological stain)
alizarin red s
alizarin s
alizarine carmine indicator
alizarine red a
alizarine red as
alizarine red for wool
alizarine red indicator
alizarine red s (biological stain)
alizarine red s sodium salt
alizarine red sw
alizarine red sz
alizarine red w
alizarine red wa
alizarine red ws
alizarine s
alizarine s extra conc. a export
alizarine s extra pure a
alizarinrot-s
alizarinsulfonate
c.i. 58005
c.i. mordant red 3
calcochrome alizarine red sc
carnelio rubine lake
chrome red alizarine
diamond red w
ext d and c red no. 7
fenakrom red w
mitsui alizarine red s
oxanal fast red sw
sodium alizarin-3-sulfonate
sodium alizarinesulfonate
Sodium alizarin sulfonate
9,10-Dihydro-3,4-dihydroxy-9,10-dioxy-2-ant hracenesul-fonicac acid sodium salt
Alizarin red(c.1.No.58005)
abcol diamond red w
alizarin red 5
alizarinreds
2-Anthracenesulfonic acid,9,10-dihydro-3,4-dihydroxy-9,10-dioxo-,monosodium salt
性質(zhì)描述: 橙黃色或黃棕色粉末。易溶于水,微溶于乙醇,不溶于苯和氯仿。1%水溶液pH2.15。
生產(chǎn)方法: 將茜素加入15%發(fā)煙硫酸,于105-110℃磺化,保溫3h,冷卻,傾入蒸餾水中,在60℃加氯化鈉鹽析,加熱至70℃,放置過夜,過濾。用10%氯鈉溶液洗滌后,將其溶于蒸餾水中,放置,過濾。用乙醇和鹽酸(9:1)溶液浸泡結(jié)晶,不斷攪拌,放置過夜,結(jié)晶在80℃以下干燥。提純:將以法得到的茜素紅用熱水溶解,再加活性炭脫色,過濾,濾液邊攪拌邊加氨水,直至有少量結(jié)晶析出,再攪拌20min,放置過夜,過濾,產(chǎn)品在70-80℃干燥。
用途: 配成0.05-0.2%水溶液,作絡合滴定指示劑和酸堿指示劑。
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