描述
– Synonyms: Aurin, 4-[Bis(4-hydroxyphenyl)methylene]2,5-cyclohexadien-1-one
– C19H14O3
– M = 290,32 g/mol
– CAS [603-45-2]
– EINECS-No.: 210-041-8
– Solub. in water: (20 ºC): 1,2 g/l
– GHS-signal word: Warning
– GHS-H sentences: H315 – H319 – H335
– GHS-P sentences: P261 – P280 – P305+P351+P338 – P321 – P405 – P501a
– Tariff number: 3212 90 90 00
– Applications: microscopy, manufacture of dyes.
SPECIFICATIONS
pH range (yellow-red): 6,8 – 8,0
Absorption maximum l (in ethanol + 2 ml HCl 1N): 482 – 486 nm
Absorptivity (A1%/1 cm; l max.): > 1250
insoluble in C2H5OH : passes test
copper (Cu): max. 0,005 %
iron (Fe): max. 0,005 %
lead (Pb): max. 0,005 %
nickel (Ni): max. 0,005 %
residue on ignition (as SO4): max. 0,5 %
loss on drying (110 ºC, 1h): max. 10 %
#枚紅酸#玫瑰紅指示劑#玫瑰花酸
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