HEPTANOIC ANHYDRIDE
- CAS NO.:626-27-7
- Empirical Formula: C14H26O3
- Molecular Weight: 242.35
- MDL number: MFCD00009536
- EINECS: 210-940-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-06-13 17:03:25
What is HEPTANOIC ANHYDRIDE?
Chemical properties
clear light yellow liquid
Preparation
To a flask containing 15.8 gm (0.2 mole) of dry pyridine 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 acid 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).
Flammability and Explosibility
Non flammable
Properties of HEPTANOIC ANHYDRIDE
Melting point: | -12 °C |
Boiling point: | 278-282 °C |
Density | 0.917 |
vapor pressure | 0.22Pa at 25℃ |
refractive index | 1.432-1.434 |
Flash point: | 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 acid, anhydride (626-27-7) |
Safety information for HEPTANOIC ANHYDRIDE
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H290:Corrosive to Metals H314:Skin corrosion/irritation |
Precautionary Statement Codes |
P234:Keep only in original container. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P390:Absorb spillage to prevent material damage. P405:Store locked up. P406:Store in corrosive resistant/… container with a resistant inner liner. P501:Dispose of contents/container to..… |
Computed Descriptors for HEPTANOIC ANHYDRIDE
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