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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:
緩血酸銨,三(羥甲基)氨基甲烷,2-氨基-2-(羥甲基)-1,3-丙二醇
Product order:
Name Specifications Packing Price Delivery
Tris(hydroxymethyl)aminomethane USP/EP超純級(jí) 100g RMB 115.5 Consulting service
Tris(hydroxymethyl)aminomethane USP/EP超純級(jí) 500g RMB 495 Consulting service
Tris(hydroxymethyl)aminomethane AR 100g RMB 57.2 促銷(xiāo)
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:
白色結(jié)晶或結(jié)晶性粉末。水溶液在空氣中不吸收二氧化碳,0.1mol/L水溶液pH10.4。對(duì)銅、鋁有腐蝕作用。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)。 熔點(diǎn):170℃ 沸點(diǎn):219-220℃(10 mmHg)
Quality Standard:
項(xiàng)目                                              USP/EP超純級(jí)
USP monograph                                     通過(guò)
EP monograph                                      通過(guò)
可溶性,40%的水溶液                               清澈,無(wú)色溶液
干物質(zhì)熔點(diǎn)                                        170-172℃
基于干物質(zhì)的純度分析,重量                        99.9%-100.01%
燃后殘?jiān)?,重?nbsp;                                   ≤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小時(shí)的重量損失, 重量                        ≤1.0%
鐵                                                ≤5 ppm
重金屬,如鉛等                                    ≤5 ppm
水含量,重量                                      ≤0.2%
APHA color, 20%水溶液                             ≤20


項(xiàng)目                                    ACS級(jí)  
                                        (ACS)
外觀Appearance                          白色結(jié)晶粉末或針狀結(jié)晶
紅外光譜鑒別Infrared spectrometry       符合
含量Assay (以干基計(jì))                    99.8 - 100.1 % (HCl-titration)
水分Water                               <2 % (K.F.)
重金屬Heavy metals (as Pb)              <5 ppm
吸光度Absorbance                        passes test
不溶性物質(zhì)Insoluble matter              <0.005 %
鐵Fe                                    < 5 ppm 

Storage:
密封保存。
用途  生物緩沖劑,緩沖范圍pH7.0-9.0。酸性氣體吸收劑。酸量滴定法基準(zhǔn)物質(zhì)。電流滴定法測(cè)定蛋白質(zhì)中的巰基。紙上電泳分離血清蛋白。淀粉平板電泳分離毒素。
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