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792527

咪唑

Name: 咪唑
Brand: SIAL

anhydrous grade, ACS reagent grade, ≥99%, Redi-Dri^™, free-flowing, solid

别名:

1,3-二氮杂-2,4-环戊二烯, 甘恶啉

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关于此项目

经验公式（希尔记法）:

C₃H₄N₂

化学文摘社编号:

288-32-4

分子量:

68.08

NACRES:

NA.21

PubChem Substance ID:

329768341

UNSPSC Code:

12352100

EC Number:

206-019-2

MDL number:

MFCD00005183

Beilstein/REAXYS Number:

103853

Assay:

≥99%

Form:

solid

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属性

产品名称

咪唑, anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥99%

Quality Level

200

grade

ACS reagent, anhydrous

vapor pressure

<1 mmHg ( 20 °C)

product line

Redi-Dri^™

assay

≥99%

form

solid

quality

free-flowing

impurities

≤0.2% water

ign. residue

≤0.1%

pH

9.5-11.0 (25 °C, 5% in H₂O)

pKa (25 °C)

6.95

bp

256 °C (lit.)

mp

88-91 °C (lit.)

cation traces

Fe: ≤0.001%

SMILES string

c1c[nH]cn1

InChI

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

InChI key

RAXXELZNTBOGNW-UHFFFAOYSA-N

说明

Application

咪唑由于具有两性性质和快速的质子转移能力，可作为质子转移试剂用于多孔有机聚合物合成。
咪唑作为催化剂的用途：

在氯硅烷/DMF存在下，醇、羧酸和胺类物质的硅烷化反应。
羧酸和光气制备相应酰氯。
咪唑-PPh₃/I₂催化体系用于醇变为碘化物的转换反应。
咪唑-PPh₃/I₂用于二醇脱氧反应。

特别适用于 pH 6.2-7.8 范围内的缓冲液

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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pictograms

GHS08,GHS05,GHS07

signalword

Danger

hcodes

H302,H314,H360D

pcodes

P260 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338

Hazard Classifications

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

存储类别

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

wgk

WGK 2

flash_point_f

293.0 °F - closed cup

flash_point_c

145 °C - closed cup

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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全球贸易项目编号

货号	GTIN
792527-100G	04061832950914
792527-1KG	04061832950921
792527-500G	04061832950938