I2399
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I2399
Sigma-Aldrich
Imidazole
ACS reagent, ≥99% (titration)
| Synonym: | 1,3-Diaza-2,4-cyclopentadiene, Glyoxaline |
| CAS Number: | 288-32-4 |
| Linear Formula: | C3H4N2 |
| Molecular Weight: | 68.08 |
| Beilstein Registry Number: | 103853 |
| EC Number: | 206-019-2 |
| MDL number: | MFCD00005183 |
| PubChem Substance ID: | 24895975 |
Description
| Application | Excellent for buffers in the range of pH 6.2-7.8 |
Properties
| grade | ACS reagent |
| vapor pressure | <1 mmHg ( 20 °C) |
| assay | ≥99% (titration) |
| total impurities | ≤0.2% water |
| ign. residue | ≤0.1% |
| pH | 9.5-11.0 (25 °C, 5% in solution) |
| pKa (25 °C) | 6.95 |
| bp | 256 °C(lit.) |
| mp | 88-91 °C(lit.) |
| cation traces | Fe: ≤0.001% |
Safety
| Personal Protective Equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
| Hazard Codes | C |
| Risk Statements | 22-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN2923 8/PG 3 |
| WGK Germany | 1 |
| RTECS | NI3325000 |
| Flash Point(F) | 293 °F |
| Flash Point(C) | 145 °C |
References
| reference | R. Breslow, Review: As RNase model. Acc. Chem. Res. 24, 317, (1991) |
| B. Storrie, E.A. Madden, Buffer for assay of horseradish peroxidase. Meth. Enzymol. 182, 217, (1990) | |
| Merck | Merck 13,4935 |
| Beilstein | Beil. 23,V,4,191 |
| Fieser | Fieser 1,492 / Fieser 2,220 |
| Aldrich MSDS 1, 1083:B / Corp MSDS 1 (1), 1973:D / FT-IR 2 (3), 3503:B / FT-IR 1 (2), 611:D / FT-NMR 1 (3), 75:B / IR-Spectra (3), 1217:G / IR-Spectra (2), 1060:E / NMR-Reference 2 (2), 484:D / RegBook 1 (2), 2351:A / Sax 6, 1605 / Sigma FT-IR 1 (2), 648:C / Structure Index 1, 371:D:6 / Vapor Phase 3, 1483:C |
