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AR
LABOR
401802125
Fluorescein AR Grade Reagent
Cas Number:2321-07-5
Formula: C20H12O5
Molar Mass:332.31
EC Number:219-031-8
Physicochemical properties:
Yellow-red to red powder. It is soluble in hot ethanol, glacial acetic acid, alkali carbonate and alkali hydroxide, and bright green fluorescence, insoluble in water, benzene, chloroform and ether. The melting point is 314 ~ 316 ° C (in the sealed tube, decomposition). The maximum absorption wavelength is 493.5 and 460 nm. The minimum lethal dose (rat, abdominal cavity) is 600 mg/kg.
Usage:
Adsorption indicator. Redox indicator. Fluorescence photometric analysis of sulfur ions. Chloride, bromine and iodine are titrated.
Packing:
500g/25kg
Fluorescein AR Grade Reagent
Cas Number:2321-07-5
Formula: C20H12O5
Molar Mass:332.31
EC Number:219-031-8
Physicochemical properties:
Yellow-red to red powder. It is soluble in hot ethanol, glacial acetic acid, alkali carbonate and alkali hydroxide, and bright green fluorescence, insoluble in water, benzene, chloroform and ether. The melting point is 314 ~ 316 ° C (in the sealed tube, decomposition). The maximum absorption wavelength is 493.5 and 460 nm. The minimum lethal dose (rat, abdominal cavity) is 600 mg/kg.
Usage:
Adsorption indicator. Redox indicator. Fluorescence photometric analysis of sulfur ions. Chloride, bromine and iodine are titrated.
Packing:
500g/25kg
Symbol | |
Signal word | Warning |
Hazard statement | H319 |
Precautionary statements—Prevention | P264 |
P280 | |
Precautionary statements—Response | P305+P351+P338 |
P337+P313 | |
UN No. | No Information |
Symbol | |
Signal word | Warning |
Hazard statement | H319 |
Precautionary statements—Prevention | P264 |
P280 | |
Precautionary statements—Response | P305+P351+P338 |
P337+P313 | |
UN No. | No Information |
Item of Analysis | Standard |
Solubility in ethanol | to pass test |
Sensitivity test | to pass test |
Residue on ignition(as SO4) ,% | 0.3 max |
Loss on drying,% | 5.0 max |
Item of Analysis | Standard |
Solubility in ethanol | to pass test |
Sensitivity test | to pass test |
Residue on ignition(as SO4) ,% | 0.3 max |
Loss on drying,% | 5.0 max |