Bromocresol green
Update:2014/10/9 9:58:15
| Item: | Bromocresol green | ||
| Synonym: | 溴甲酚藍(lán)；3，3’,5,5’-四溴間甲酚磺酞；Bromocresol blue;3, 3’,5,5’-Tetrabromo-m-cresolsulphthalein | ||
| CAS No.: | 76-60-8 | Special Grade: | ACS Grade |
| Formula: | C21H14Br4O5S | M.W.: | 698.01 |
Order
| Product No. | Size | Price | Brand |
| 114359-5g | 5g | 89 | GBCBIO |
| 114359-10g | 10g | 140 | GBCBIO |
| 114359-5g | 5g | 440 | Sigma |
Introduction
| Dye content(%)........................................................................>98 visual transition interval ...........................3.8 - 5.4, yellow to blue UV absorption.......................................................... |
| 白色至淺黃色結(jié)晶或淺褐色粉末。內(nèi)酯式結(jié)晶體，熔點(diǎn)為218～219℃，微溶于水，溶于乙醇，不溶于醚。其鈉鹽溶于水。 酸堿指示劑，pH值3.8（黃）～5.4（藍(lán)）。其鈉鹽水溶液用于分光光度法測定pH值的顯色劑。用作薄層色譜法測定脂族羥酸和生物堿的試劑及光度法測定季銨陽離子的萃取分離劑。 |
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