Customization: | Available |
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CAS No.: | 626-27-7 |
Formula: | C14h26o3 |
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HEPTANOIC ANHYDRIDE Chemical Properties |
Melting point | -12 °C |
Boiling point | 278-282 °C |
density | 0.917 |
refractive index | 1.432-1.434 |
Fp | 110 °C |
storage temp. | Inert atmosphere,Room Temperature |
form | Liquid |
color | Clear light yellow |
CAS DataBase Reference | 626-27-7(CAS DataBase Reference) |
EPA Substance Registry System | Heptanoic aci d, anhydride (626-27-7) |
Safety Information |
Hazard Codes | C |
Risk Statements | 34 |
Safety Statements | 45-36/37/39-26-28 |
RIDADR | 1760 |
HazardClass | 8 |
PackingGroup | III |
HS Code | 29159000 |
HEPTANOIC ANHYDRIDE Usage And Synthesis |
Chemical Properties | clear light yellow liquid |
Preparation | To a flask containing 15.8 gm (0.2 mole) of dry pyridin e and 25 ml of dry benzene is rapidly added with stirring 14.8 gm (0.1 mole) of heptanoyl chloride. The reaction is only slightly exothermic and then 13.0 gm (0.1 mole) of heptanoic aci d is added dropwise (5 min) causing the temperature to rise to 60-65°C. After stirring for 10 min, the solid (pyridinium hydrochloride) is quickly filtered, washed twice with 25 ml portions of dry benzene, the benzene washings concentrated under reduced pressure, and the residue distilled to afford 19-20 gm (78-83%), b.p. 155-162°C (12 mm Hg), or 170-173°C (15 min). |