Merck
所有图片(1)

56749

Sigma-Aldrich

咪唑

BioUltra, ≥99.5% (GC)

别名:
甘恶啉, 1,3-二氮杂-2,4-环戊二烯
Empirical Formula (Hill Notation):
C3H4N2
CAS号:
分子量:
68.08
Beilstein:
103853
EC 号:
MDL编号:
eCl@ss:
39161001
PubChem化学物质编号:
NACRES:
NA.25

质量水平

200

蒸汽压

<1 mmHg ( 20 °C)

产品线

BioUltra

测定

≥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 string

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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相关类别

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 P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges

分析证书

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原产地证书 (CofO)

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