o-Cresolphthalein
Molecular Structure:
MDL:
--MFCD00005912
Molecular Formula:
C22H18O4
Molecular Weight:
346.38
Alias:
3,3'-二甲基酚酞,3,3-雙(4-羥基-3-甲基苯基)-1(3H)-異苯并呋喃酮
3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
o-Cresolphthalein |
AR,醇溶 |
100g |
RMB 83.6 |
Consulting service |
o-Cresolphthalein |
AR,堿溶 |
100g |
RMB 96.8 |
Consulting service |
Character:
白色或紅光黃色結(jié)晶粉末。溶于乙醇、乙醚、冰醋酸,溶于稀堿呈紫色,微溶于水,難溶于苯。
熔點(diǎn):223-225℃
Quality Standard:
項(xiàng)目 分析純
(AR)
外觀Appearance 白色至粉色或淺灰色至黃褐色粉末
紅外光譜鑒別Infrared spectrometry 和對(duì)照品匹配
紫外光譜UV spectrometry 符合
PH變色域Vis. transition interval pH 8.2 (無(wú)色) -pH 9.8 (紅色)
λ max. 563.0 to 568.0 nm(5 mg/L pH 9.8)
吸光值A(chǔ)bsorbance ≥0.590(5 mg/L, pH 9.8, 563.0 to 568.0 nm)
醇溶解試驗(yàn)Solubility in EtOH clear
干燥損失Drying loss ≤ 1.0 %
灼燒殘?jiān)麵gnition residue(Sulfate) ≤0.1 %
Storage:
密封陰涼干燥保存。
用途 酸堿指示劑,變色范圍pH8.2(無(wú)色)-9.8(紅色)。