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重要文件

56749

Sigma-Aldrich

咪唑

BioUltra, ≥99.5% (GC)

同義詞:

1,3-二氮杂-2,4-环戊二烯, 甘恶啉

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About This Item

經驗公式(希爾表示法):
C3H4N2
CAS號碼:
分子量::
68.08
Beilstein:
103853
EC號碼:
MDL號碼:
分類程式碼代碼:
12352005
eCl@ss:
39161001
PubChem物質ID:
NACRES:
NA.25

蒸汽壓力

<1 mmHg ( 20 °C)

品質等級

產品線

BioUltra

化驗

≥99.5% (GC)

形狀

powder or crystals

雜質

insoluble matter, passes filter test
≤0.2% water

燃燒殘留物(900 °C)

≤0.05%

pH值

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.)

溶解度

H2O: 0.1 M at 20 °C, clear, colorless

負離子痕跡

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

正離子痕跡

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

&lambda ;

0.1 M in H2O

紫外吸收

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

SMILES 字串

c1c[nH]cn1

InChI

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

InChI 密鑰

RAXXELZNTBOGNW-UHFFFAOYSA-N

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應用

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

其他說明

可作为测定辣根过氧化物酶的缓冲液

訊號詞

Danger

危險聲明

危險分類

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

儲存類別代碼

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

水污染物質分類(WGK)

WGK 2

閃點(°F)

293.0 °F - closed cup

閃點(°C)

145 °C - closed cup

個人防護裝備

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


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