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溴甲酚绿(Bromocresol green):76-60-8

溴甲酚绿
溴甲酚绿;溴甲酚蓝;溴甲酚绿-甲基红指示剂粉枕;溴甲酚绿-甲基红指示剂溶液;溴甲酚绿(0.04%的水溶液)[用于检测PH];溴甲酚绿(0.04%的乙醇(约50%)溶液)[用于滴定];溴甲酚绿(含氢氧化钠),乙醇溶液[用于薄层色谱着色剂];溴甲酚绿(的乙醇(约50%)溶液)[用于滴定]
Bromocresol green
Phenol,4,4’-(3H-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-3-methyl-,S,S-dioxide;tetrabromo-m-cresolphthaleinsulfone;vertdebromocresol;BACILLUSOFCALMETTEANDGUERIN;BCG;BROMCRESOLGREEN;BROMOCRESOLGREENSULTONEFORM;BROMOCRESOLBLUE
76-60-8
200-972-8
C21H14Br4O5S
698.01
0.79 g/mL at 20 °C
225 °C (dec.) (lit.)
626.0±55.0 °C(Predicted)
12 °C
4.7(at 25℃)
3.8(YELLOW)-5.4(BLUE)
slightly soluble
Solubility Sparingly soluble in water; soluble in ethanol, ether, ethyl acetate
3.8~5.4
Stable. Incompatible with strong oxidizing agents.
Pale orange Powder/Solid
F,Xi,Xn
11-36-67-36/37/38-20/21/22
UN 1219 3/PG 2
7-16-24/25-26-37/39-36
29349990
no restrictions.

溴甲酚绿又称3,3′,5,5′-四溴间甲酚磺酰酞、γ-Sultone。从乙酸中析出者为微细的浅黄色结晶。相对分子质量698.05。熔点218~219℃。微溶于水,溶于乙醇、乙醚、乙酸乙酯和苯。对碱很敏感,遇碱性水溶液呈特殊的蓝绿色。溴甲酚绿可用作指示剂,当pH=3.8时呈黄色,pH=5.4时呈蓝绿色。

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