CALCIUM RED
Glyoxalbis(2-hydroxyanil)
CAS: 1149-16-2
Molecular Formula: C14H12N2O2
CALCIUM RED - Names and Identifiers
| Name | Glyoxalbis(2-hydroxyanil) |
| Synonyms | GBHA CALCIUM RED glyoxal-bis-hydroxyanil Glyoxalbis(2-hydroxyanil) GLYOXAL BIS(2-HYDROXYANIL) GLYOXALBIS-(O-HYDROXYANIL) Glyoxal bis(2-hydroxyanil) DI-(2-HYDROXYPHENYLIMINO)ETHANE Di-(2-hydroxyphenylimino)ethane Bis-(2-hydroxyphenylimino)-ethane 2,2-(Ethanediylidenedinitrilo)diphenol 2,2'-(1,2-ethanediylidenedinitrilo)bis-pheno 2,2'-(1,2-ethanediylidenedinitrilo)bis-Phenol (6E)-6-({2-[(2-hydroxyphenyl)amino]ethenyl}imino)cyclohexa-2,4-dien-1-one (6E)-6-({(E)-2-[(2-hydroxyphenyl)amino]ethenyl}imino)cyclohexa-2,4-dien-1-one |
| CAS | 1149-16-2 |
| EINECS | 214-560-0 |
| InChI | InChI=1/C14H12N2O2/c17-13-7-3-1-5-11(13)15-9-10-16-12-6-2-4-8-14(12)18/h1-10,15,17H/b10-9u,16-12+ |
CALCIUM RED - Physico-chemical Properties
| Molecular Formula | C14H12N2O2 |
| Molar Mass | 240.26 |
| Density | 1.1613 (rough estimate) |
| Melting Point | 203-211°C(lit.) |
| Boling Point | 382.97°C (rough estimate) |
| Flash Point | 204.2°C |
| Solubility | Chloroform (Slightly), DMSO (Slightly), Ethyl Acetate (Slightly), Methanol (Slig |
| Vapor Presure | 1.92E-07mmHg at 25°C |
| Appearance | White to white-like powder |
| Color | Light yellow |
| pKa | 9.46±0.35(Predicted) |
| Storage Condition | Inert atmosphere,2-8°C |
| Stability | Stable. Incompatible with strong oxidizing agents. Combustible. |
| Refractive Index | 1.6180 (estimate) |
| MDL | MFCD00002183 |
| Physical and Chemical Properties | White or milky white crystalline powder, melting point 204 ° C (slightly decomposed). Soluble in methanol, ethanol, acetone, chloroform, pyridine and dimethyl formamide, water-soluble. |
| Use | Used as complexing indicator, etc |
CALCIUM RED - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| HS Code | 29252000 |
CALCIUM RED - Introduction
Soluble in methanol, ethanol, acetone, chloroform, pyridine and dimethylformamide, slightly soluble in water.
Last Update：2022-10-16 17:12:20
CALCIUM RED - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | complexometric titration indicator to determine calcium, cadmium, etc. Used as complexing indicator, etc. Complexing indicator. Used for the determination of calcium, cadmium, aluminum and uranium. Photometric determination of calcium, erbium, indium, scandium, ruthenium, and yttrium. |
| Production method | is obtained by the reaction of o-aminophenol and glyoxal. Dissolve o-aminophenol in water, add sodium hydrosulfite, filter at 80 ℃ and add glyoxal dropwise for reaction. Cooling, filtering out the precipitate, washing with water, recrystallization with methanol, and vacuum drying to obtain the finished product. |
Last Update：2024-04-09 15:16:47
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