产品名称 : | PH0713 | Tris碱 三羟甲基氨基甲烷 TRIS/Tris-base/THAM CAS:77-86-1 |
产品品牌 : | 飞净 PHYGENE |
货号 PH0713
名称 Tris-Base(三羟甲基氨基甲烷)
规格 100g | 500g | 1000g
保存 常温保存,长期有效
产品简介
Tris base,即Tris碱,中文名也称为三(羟甲基)氨基甲烷,即生物化学和分子生物学中常常被配制成多种缓冲液,例如:Tris-EDTA(TE缓冲液),多用于核酸的纯化和储存,保护其不被核酸酶降解;Tris acetate-EDTA(TAE缓冲液)和Tris borate-EDTA(TBE缓冲液)普遍用作凝胶配制缓冲液以及电泳缓冲液。
Tris缓冲液不仅被广泛用作核酸和蛋白质的溶剂,还有许多重要用途。Tris被用于不同pH条件下的蛋白质晶体生长。Tris缓冲液的低离子强度特点可用于线虫(C. elegans)核纤层蛋白(lamin)的中间纤维的形成。Tris也是蛋白质电泳缓冲液的主要成分之一。此外,Tris还是制备表面活性剂、硫化促进剂和一些药物的中间物。Tris也被用作滴定标准物。
缓冲特性
Tris为弱碱,在室温(25℃)下,它的pKa为8.1;根据缓冲理论,Tris缓冲液的有效缓冲范围在pH7.0到9.2之间。
Tris碱的水溶液pH在10.5左右,一般加入盐酸以调节pH值至所需值,即可获得该pH值的缓冲液。但同时应注意温度对于Tris的pKa的影响。
产品性质
中文别名(Chinese synonym) 2-氨基-2-(羟甲基)-1,3-丙二醇;Tris 碱;氨基丁三醇;三(羟甲基)氨基甲烷;
英文别名(English synonym) THAM; Trizma base; Trometamol; Tris(hydroxymethyl)aminomethane;
2-Amino-2-(hydroxymethyl)-1,3-propanediol;
CAS号(CAS NO.) 77-86-1
分子式(Formula) NH2C(CH2OH)3
分子量(Molecular weight) 121.14
外观(Appearance) 白色结晶粉末至针状结晶
熔点(Melting point) 168-172 °C
溶解性(Solubility) 溶于水
纯度 99.9%
注意事项
为了您的安全和健康,请穿实验服并戴一次性手套操作。
Tris, or tris(hydroxymethyl)aminomethane, or known during medical use as tromethamine or THAM, is an organic compound with the formula (HOCH2)3CNH2. It is extensively used in biochemistry and molecular biology as a component of buffer solutions such as in TAE and TBE buffers, especially for solutions of nucleic acids.
Buffering features
The conjugate acid of Tris has a pKa of 8.07 at 25 °C, which implies that the buffer has an effective pH range between 7.1 and 9.1 (pKa ± 1) at room temperature.
Buffer details
The pKa declines approximately 0.03 units per degree Celsius rise in temperature.
Silver-containing single-junction pH electrodes (e.g., silver chloride electrodes) are incompatible with tris since an Ag-tris precipitate forms which clogs the junction. Double-junction electrodes are resistant to this problem, and non-silver containing electrodes are immune.
Other names
TRIS, Tris, Tris base, Tris buffer, Trizma, Trisamine, THAM, Tromethamine, Trometamol, Tromethane, Trisaminol
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