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HomeProduct name list5,7-Dihydroxy-4-methylcoumarin

5,7-Dihydroxy-4-methylcoumarin

  • CAS NO.:2107-76-8
  • Empirical Formula: C10H8O4
  • Molecular Weight: 192.17
  • MDL number: MFCD00016966
  • EINECS: 218-289-9
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-05 08:26:49
5,7-Dihydroxy-4-methylcoumarin Structural

What is 5,7-Dihydroxy-4-methylcoumarin?

Chemical properties

White metallic powder

The Uses of 5,7-Dihydroxy-4-methylcoumarin

5,7-Dihydroxy-4-methylcoumarin may be used in the synthesis of pyrano[2,3-h]coumarin derivatives and 5,7-dihydroxy-8-formyl-4-methylcoumarin.

Definition

ChEBI: 5,7-Dihydroxy-4-methylcoumarin is a hydroxycoumarin.

General Description

Yellow powder. Fluoresces blue. Absorbs ultraviolet light.

Air & Water Reactions

Slightly water soluble .

Reactivity Profile

5,7-Dihydroxy-4-methylcoumarin is a phenol and lactone. Phenols do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid. Lactones react similarly to esters. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.

Fire Hazard

Flash point data for 5,7-Dihydroxy-4-methylcoumarin are not available. 5,7-Dihydroxy-4-methylcoumarin is probably combustible.

Properties of 5,7-Dihydroxy-4-methylcoumarin

Melting point: 296-299 °C (lit.)
Boiling point: 472.1±14.0 °C(Predicted)
Density  1.456±0.06 g/cm3(Predicted)
storage temp.  -20°C Freezer, Under inert atmosphere
solubility  DMSO (Slightly), Methanol (Slightly)
form  Solid
pka 7.29±0.20(Predicted)
color  Off-White to Pale Green
λmax 322nm(MeOH)(lit.)
Sensitive  Light Sensitive
BRN  179133
CAS DataBase Reference 2107-76-8(CAS DataBase Reference)
EPA Substance Registry System 5,7-Dihydroxy-4-methylcoumarin (2107-76-8)

Safety information for 5,7-Dihydroxy-4-methylcoumarin

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral

Computed Descriptors for 5,7-Dihydroxy-4-methylcoumarin

InChIKey QNVWGEJMXOQQPM-UHFFFAOYSA-N

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