甲酚红

甲酚红试剂级价格

甲酚红化学性质

熔点 :290 °C
沸点 :479.59°C (rough estimate)
密度 :0.998 g/cm3
折射率 :1.5300 (estimate)
储存条件 :Store at +5°C to +30°C.
溶解度 :Solubility Sparingly soluble in water; soluble in ethanol
形态 :Powder
酸度系数(pKa) :1.0(at 25℃)
颜色 :Dark green or brown-red
酸碱指示剂变色ph值范围 :7.2(YELLOW)--8.8(PURPLISH RED)
PH值 :7.2～8.8
水溶解性 :soluble
最大波长(λmax) :570nm, 367nm, 432nm
Merck :14,2578
BRN :343399
主要应用 :Display device, optical sensors, combustion gas detection system, inks, correction fluid, diapers, toothpaste, identifying fresh and stale rice, food storage, determine glucose in dialysis solution, monitor metabolic activity of microorganisms, detect bacterialinfection, psychoactive drugs, dental impression material
InChIKey :ASMGMVUGPNODGX-UHFFFAOYSA-N
EPA化学物质信息 :Cresol Red (1733-12-6)

安全信息

危险品标志 :Xi,Xn,F
危险类别码 :36/37/38-20/21/22-11
安全说明 :24/25-36-26-16
危险品运输编号 :UN1170 - class 3 - PG 3 - Ethanol, solution
WGK Germany :3
TSCA :Yes
海关编码 :29349990
毒性 :A potent lacrimator which is chemically stable and retains its irritancy in water and so can be used in liquid jets in personnel control. In addition to lacrimation, it causes eye pain, blepharospasm, eyelid swelling, irritation of the conjunctiva, a rise in intraocular pressure, and erythema of the skin. Because it can be used in water, its use is less affected by changes in climatic conditions. It is a more potent lacrimator than CS but it is less potent in lethality than CS.

甲酚红 MSDS

4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-methylphenol) S,S-dioxide

化学性质带绿色光泽的晶体，磨碎后为红棕色粉末。易溶于醇及稀氢氧化钠溶液，微溶于水。
用途酸碱提示剂。用20%乙醇配成0.1%溶液或0.04%水溶液（取0.04g该品溶于1.05ml0.1MNaOH溶液），再稀释至100ml。pH变色范围：7.2（黄）-8.8（紫红）；2.0（红）-3.0（琥珀色）。
用途酸碱指示剂。
生产方法将苯甲磺酸酐、邻甲酚、无水氯化锌混和，搅拌加热，在115-120℃缩合反应约7h，通水蒸气赶净剩余的邻甲酚。过滤，滤饼用热碳酸钠水溶液溶解，过滤，在清亮滤液中加1：1盐酸中和，剧烈搅拌。滤出结晶，用少量水洗涤，干燥，得成品。必要时可用冰醋酸重结晶提纯。

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