金精三羧酸三銨鹽
Aluminon
CAS: 569-58-4
Molecular Formula: C22H17NO9
金精三羧酸三銨鹽 - Names and Identifiers
金精三羧酸三銨鹽 - Physico-chemical Properties
| Molecular Formula | C22H17NO9 |
| Molar Mass | 439.38 |
| Density | 1.4414 (rough estimate) |
| Melting Point | 220-225°C (dec.)(lit.) |
| Boling Point | 573.92°C (rough estimate) |
| Flash Point | 415.1°C |
| Water Solubility | 800 g/L (20 ºC) |
| Vapor Presure | 4.32E-24mmHg at 25°C |
| Appearance | Red-like powder |
| Color | Deep red |
| Merck | 14,322 |
| BRN | 3900820 |
| PH | 5.3 (10g/l, H2O, 20°C) |
| Storage Condition | room temp |
| Stability | Stable. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.6300 (estimate) |
| MDL | MFCD00040925 |
| Physical and Chemical Properties | Brownish yellow or dark red powder. Soluble in water, ethanol-soluble, almost insoluble in ether, acetone and chloroform. |
| Use | For the Colorimetric Determination of aluminum, nitrogen and other compounds and the color reaction of thorium, gallium and scandium |
金精三羧酸三銨鹽 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/38 - Irritating to eyes and skin. R36/37/38 - 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. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 2 |
| RTECS | GU4800000 |
| TSCA | Yes |
| HS Code | 29189090 |
| Toxicity | LD50 orally in Rabbit: 9000 mg/kg |
金精三羧酸三銨鹽 - Introduction
Easily soluble in water, slightly soluble in ethanol, almost insoluble in ether, acetone and chloroform. The maximum absorption wavelength is 522(450)nm. Median lethal dose (mouse, vein) 4 mg/kg. It's irritating.
Last Update：2022-10-16 17:26:27
金精三羧酸三銨鹽 - Reference Information
| Color index | 43810 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | rose red tricarboxylic acid ammonium, also known as aluminum reagent, is mainly used in the field of organic analysis. |
| Application | for Colorimetric Determination of aluminum, nitrogen and other compounds and thorium, color reaction of gallium and scandium, etc. Complexometric titration indicator, determination of aluminum in water, food and tissues, including soft water, baking powder, mordant, pulp paper, tanning, manufacturing pigments, copper plating, clarifier, etc., reagents for chromatographic analysis. determination of aluminum in water, food and tissue. Photometric determination of aluminium, beryllium and fluoride, gallium, scandium. Paper chromatography for aluminium. |
| production method | in 20ml of concentrated sulfuric acid, 10g(0.145mol) of solid sodium nitrite is added in portions while controlling the addition rate, in order to release only a small amount of nitric oxide. When dissolution was complete, 20g(0.145mol) of salicylic acid was added in portions with stirring for approximately 15min. The mixture was then stirred at 20 °c until all the solids were dissolved and the viscous liquid was bright red to brown in color. Add 5ml(0.065mol)35-40% formaldehyde solution Dropwise slowly while stirring. The reaction temperature should not exceed 5 ℃, after completion of the reaction, 100g of crushed ice and 500ml of ice-water were added and stirred until small pieces of solid were formed. Filtration, washing with ice water for several times, suction drying, and then dissolved in 1:2 (volume ratio) ammonia, filter paper filtration. The filtrate was evaporated to dryness on a steam bath. About 19.22G of a brown-yellow glass-like solid was obtained. Yield 83-86%. |
| category | toxic substances |
| toxicity grade | low toxicity |
| Acute toxicity | oral-rat LD50: 9000 mg/kg |
| flammability hazard characteristics | flammability; Toxic ammonia and NOx smoke from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from food raw materials |
| extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
Last Update：2024-04-09 19:05:13
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