Isophorone |
Synonyms & Trade Names Isoacetophorone; 3,5,5-Trimethyl-2-cyclohexenone; 3,5,5-Trimethyl-2-cyclo-hexen-1-one |
CAS No. 78-59-1 |
RTECS No. GW7700000 |
DOT ID & Guide 1993 128 (combustible liquid, n.o.s.) |
FormulaC9H14O |
Conversion 1 ppm = 5.65 mg/m3 |
IDLH 200 ppm
See: 78591 |
Exposure Limits NIOSH REL: TWA 4 ppm (23 mg/m3)
OSHA PEL†: TWA 25 ppm (140 mg/m3) |
Measurement Methods
NIOSH 2508 , 2556;
OSHA 7
See: NMAM or OSHA Methods |
Physical Description Colorless to white liquid with a peppermint-like odor. |
MW: 138.2 |
BP: 419°F |
FRZ: 17°F |
Sol: 1% |
VP: 0.3 mmHg |
IP: 9.07 eV |
Sp.Gr: 0.92 |
Fl.P: 184°F |
UEL: 3.8% |
LEL: 0.8% |
|
|
| Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F. |
Incompatibilities & Reactivities Oxidizers, strong alkalis, amines |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms irritation eyes, nose, throat; headache, nausea, dizziness, lassitude (weakness, exhaustion), malaise (vague feeling of discomfort), narcosis; dermatitis; in animals: kidney, liver damage |
Target Organs Eyes, skin, respiratory system, central nervous system, liver, kidneys |
|
Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH Up to 40 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator* Up to 100 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)* Up to 200 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)*
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode*
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0169 See MEDICAL TESTS: 0123 |
