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Merck

56748

Sigma-Aldrich

咪唑

BioUltra, for molecular biology, ≥99.5% (GC)

别名:

1,3-二氮杂-2,4-环戊二烯, 甘恶啉

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About This Item

经验公式(希尔记法):
C3H4N2
CAS号:
分子量:
68.08
Beilstein:
103853
EC 号:
MDL编号:
UNSPSC代码:
12352005
eCl@ss:
39161001
PubChem化学物质编号:
NACRES:
NA.25

等级

Molecular Biology
for molecular biology

蒸汽压

<1 mmHg ( 20 °C)

产品线

BioUltra

方案

≥99.5% (GC)

表单

flakes
powder or crystals

杂质

DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
≤0.2% water

灼烧残渣 (900 °C)

≤0.05%

pH值(酸碱度)

9.5-11.0 (25 °C, 0.1 M in H2O)

pKa (25 °C)

6.95

沸点

256 °C (lit.)

mp

88-91 °C (lit.)

溶解性

H2O: 0.1 M at 20 °C, clear, colorless

痕量阴离子

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

痕量阳离子

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES字符串

c1c[nH]cn1

λ

0.1 M in H2O

紫外吸收

λ: 260 nm Amax: 0.10
λ: 280 nm Amax: 0.10

InChI

1S/C3H4N2/c1-2-5-3-4-1/h1-3H,(H,4,5)

InChI key

RAXXELZNTBOGNW-UHFFFAOYSA-N

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应用

咪唑可用于制备在25℃下pH范围6.2-7.8的缓冲液。它被推荐作为辣根过氧化物酶测定缓冲液的一个组分,并作为螯合剂用于各种二价阳离子的结合。咪唑可用于从二价阳树脂中洗脱含组氨酸的蛋白质(SigmaP6611,HisSelect.-HC镍亲和凝胶),也可用于检测蛋白质的SDS-PAGE凝胶的反向染色。
特别适用于 pH 6.2-7.8 范围内的缓冲液

其他说明

综述:作为RNase模型

警示用语:

Danger

危险声明

危险分类

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1C

储存分类代码

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

闪点(°F)

293.0 °F - closed cup

闪点(°C)

145 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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