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Tris(hydroxymethyl)aminomethane

Cas:
77-86-1
Molecular Structure:
MDL:
MFCD00004679
Molecular Formula:
C4H11NO3;NH2C(CH2OH)3
Molecular Weight:
121.14
Alias:
缓血酸铵,三(羟甲基)氨基甲烷,2-氨基-2-(羟甲基)-1,3-丙二醇
Product order:
Name Specifications Packing Price Delivery
Tris(hydroxymethyl)aminomethane USP/EP超纯级 100g RMB 115.5 Consulting service
Tris(hydroxymethyl)aminomethane USP/EP超纯级 500g RMB 495 Consulting service
Tris(hydroxymethyl)aminomethane AR 100g RMB 57.2 促销
Tris(hydroxymethyl)aminomethane AR 500g RMB 119.9 Consulting service
Tris(hydroxymethyl)aminomethane AR 1kg RMB 207.9 Consulting service
Tris(hydroxymethyl)aminomethane ACS 100g  RMB 138.6 Consulting service
Tris(hydroxymethyl)aminomethane ACS 500g  RMB 424.6 Consulting service
Character:
白色结晶或结晶性粉末。水溶液在空气中不吸收二氧化碳,0.1mol/L水溶液pH10.4。对铜、铝有腐蚀作用。溶解度(:550 g/L水 (25°C),79.1MG/ML 乙二醇,26MG/ML 甲醇 (25°C),22.0MG/ML 95% 乙醇- 14MG/ML DMF (25°C),2.0MG/ML 丙酮,0.5MG/ML 乙酸乙酯(25°C),0.05MG/ML 氯仿,<0.05MG/ML CCL4 (25°C)。 熔点:170℃ 沸点:219-220℃(10 mmHg)
Quality Standard:
项目                                              USP/EP超纯级
USP monograph                                     通过
EP monograph                                      通过
可溶性,40%的水溶液                               清澈,无色溶液
干物质熔点                                        170-172℃
基于干物质的纯度分析,重量                        99.9%-100.01%
燃后残渣,重量                                    ≤0.05%
pH值 (5%水溶液)                                   10.5-11.5
不溶物,重量                                      ≤0.005%
UV吸收 ABS @ 290 nm, 1%水溶液                     ≤0.05
UV吸收 @ 260 nm, 10%水溶液                        ≤0.03
UV 吸收 @ 280 nm, 10%水溶液                       ≤0.02
UV 吸收 @ 430 nm, 10%水溶液                       ≤0.004
UV 吸收 @ 290 nm, 40%水溶液                       ≤0.2
105℃3小时的重量损失, 重量                        ≤1.0%
铁                                                ≤5 ppm
重金属,如铅等                                    ≤5 ppm
水含量,重量                                      ≤0.2%
APHA color, 20%水溶液                             ≤20


项目                                    ACS级  
                                        (ACS)
外观Appearance                          白色结晶粉末或针状结晶
红外光谱鉴别Infrared spectrometry       符合
含量Assay (以干基计)                    99.8 - 100.1 % (HCl-titration)
水分Water                               <2 % (K.F.)
重金属Heavy metals (as Pb)              <5 ppm
吸光度Absorbance                        passes test
不溶性物质Insoluble matter              <0.005 %
铁Fe                                    < 5 ppm 

Storage:
密封保存。
用途  生物缓冲剂,缓冲范围pH7.0-9.0。酸性气体吸收剂。酸量滴定法基准物质。电流滴定法测定蛋白质中的巯基。纸上电泳分离血清蛋白。淀粉平板电泳分离毒素。
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