Products Description
Introduction and application of CAS:90-33-5| 4-Methylumbelliferone
Chemical properties Acicular crystals. Melting point: 185-186°C (194-195°C). Soluble in ethanol, acetic acid, alkali solution and ammonia, slightly soluble in hot water, ether and chloroform. It reacts with concentrated sulfuric acid to produce blue fluorescence. Use laser dye, standard for fluorescence determination of enzyme activity. Indicator for the determination of nitric acid. Usage Hymecoumarin is a choleretic drug and an intermediate of the anti-allergic drug cromoglycate sodium.
Specification of CAS:90-33-5| 4-Methylumbelliferone
Melting point 188.5-190°C(lit.)
Boiling point 267.77°C (roughestimate)
Density 1.1958 (roughestimate)
Refractive index 1.5036(estimate)
Storage conditions 2-8°C
Solubility: Almost insoluble in water; slightly soluble in ethanol, ether and chloroform. Soluble in methanol
Form crystalline powder
Acidity coefficient (pKa) 7.79 (at25℃)
Color off-white to yellow
Package of CAS:90-33-5| 4-Methylumbelliferone
25kg/drum
This product is valid for 24 months from the production date when stored in a warm sealed state.
Safety and Transportation
This product should be stored and sealed at room temperature. Customers should carefully read the product treatment, material safety data sheet (MSDS), and labels before use, be familiar with the product's safety information, operating instructions, and environmental impact, and wear appropriate personal protection as required. supplies.
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