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Merck
CN

56749

Sigma-Aldrich

咪唑

BioUltra, ≥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

蒸汽压

<1 mmHg ( 20 °C)

质量水平

产品线

BioUltra

检测方案

≥99.5% (GC)

形式

powder or crystals

杂质

insoluble matter, passes filter test
≤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

bp

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

λ

0.1 M in H2O

紫外吸收

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

SMILES字符串

c1c[nH]cn1

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。推荐将其作为测定辣根过氧化物酶的缓冲液的组分和作为各种二价阳离子结合的螯合剂。咪唑可用于从二价阳离子树脂(Sigma P6611,HisSelect.-HC镍亲和凝胶)洗脱含组氨酸的蛋白质,也可用于SDS-PAGE凝胶的反向染色以检测蛋白质。
特别适用于 pH 6.2-7.8 范围内的缓冲液

其他说明

可作为测定辣根过氧化物酶的缓冲液

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

WGK

WGK 2

闪点(°F)

293.0 °F

闪点(°C)

145 °C

个人防护装备

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


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