Heptoxime

  • 1,2-Cycloheptanedione, dioxime
  • Cycloheptane-1,2-dione dioxime
Formula
C7H12N2O2
Structure
Description
Odorless white powder.
Uses
Used as a reagent in quantitative determination of nickel.

Registry Numbers and Inventories.
CAS
530-97-2
EC (EINECS/ELINCS)
208-499-9
Merck
12,4700
Beilstein/Gmelin
2328189
Beilstein Reference
4-07-00-01990
Canada DSL/NDSL
DSL
US TSCA
Listed

Properties.
Formula
C7H12N2O2
Formula mass
156.18
Melting point, °C
182
Boiling point, °C
348
Vapor pressure, mmHg
3.3E-6 (25 C)
Density
1.29 g/cm3
Solubility in water
4.8 g/L (20 C)
pKa/pKb
10.80 (pKa)
Partition coefficient, pKow
0.72
Heat of vaporization
68.53 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry location in a tightly sealed container.
Protection
Safety glasses with top and side shields. Disposable latex gloves. Lab coat.
Small spills/leaks
Scoop up spilled material into a large beaker and dissolve with water. Flush the spilled material to the drain with a large excess of water. Decontaminate the area of the spill with a soap solution.
Stability
Stable when stored under proper conditions.
Decomposition
Heating to decomposition releases toxic and/or corrosive fumes of: phosphorus oxides sodium monoxide potassium oxide

Fire.
Flash Point,°C
217
Fire fighting
Extinguishing Media: Use media appropriate to surrounding fire conditions. As in any fire, wear self-contained breathing apparatus pressure-demand and full protective gear.
Combustion products
During a fire, corrosive and toxic fumes of phosphorus oxides, sodium monoxide and potassium oxides may be formed.

Health.
Exposure effects
   Ingestion
Very large doses may cause gastrointestinal disturbances, fever, lethargy, diarrhea, muscular cramps, nausea, vomiting, cardiac depression, kidney damage.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause irritation.
   Eyes
May cause irritation.

First aid
 
   Ingestion
Give large quantities of water. Call physician immediately.
   Inhalation
Remove to fresh air.
   Skin
Wash skin with plenty of water.
   Eyes
Immediately flush eyes with water for 15 minutes. Call physician.

Transport.