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Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]:

Use powder, foam, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.

Remove contaminated clothes. Rinse skin with plenty of water or shower.

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Rest. Refer for medical attention .

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Excerpt from NIOSH Pocket Guide for Methylcyclohexane:

General First Aid:

(General first aid procedures)

· Wear positive pressure self-contained breathing apparatus (SCBA).

200.0 [ppm]

FOAM, CARBON DIOXIDE, DRY CHEMICAL

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.

Absorb on paper. Evaporate on a glass or iron dish in hood. Burn the paper.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personal hazard. Use water spray to knock-down vapors.

Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.

The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

inhalation, ingestion, skin and/or eye contact

Dizziness. Drowsiness.

Dry skin.

Redness.

Nausea. Further see Inhalation.

irritation eyes, skin, nose, throat; dizziness, drowsiness; In Animals: narcosis

VAPOR CAUSES BRIEF CENTRAL NERVOUS DEPRESSION LIKE CYCLOHEXANE. ... NO SYSTEMIC POISONINGS REPORTED ... .

Nervous system disturbances - /CNS depression/.

Lightheadedness, drowsiness; ... .

No toxic effects from industrial exposure nor any case of intoxication in humans by methylcyclohexane has been reported.

... IRRITANT & DEFATTING ACTION ON THE SKIN. /CYCLOPARAFFINS/

INHALATION ... OF 7500 TO 10,000 PPM FOR TWO HOURS CAUSED PROSTRATION IN WHITE MICE, AND 10,000 TO 12,500 PPM WAS FATAL. ... ACUTE TOXICITY OF METHYLCYCLOHEXANE WAS GREATER THAN THAT OF HEPTANE, BUT LESS THAN THAT OF OCTANE. ... 1200 PPM /WAS REPORTED/ TO BE INNOCUOUS FOR RABBITS. PROLONGED EXPOSURE AT 370 PPM APPEARED TO BE HARMLESS TO MONKEYS.

NO EFFECTS RESULTED FROM REPEATED EXPOSURES OF RABBITS AT 1160 PPM FOR 10 WEEKS, AND ONLY SLIGHT KIDNEY AND LIVER INJURY WAS OBSERVED AT 3330 PPM.

ORAL DOSE IN RABBITS CAUSED MILD LETHARGY, SEVERE DIARRHEA AND CIRCULATORY COLLAPSE. VASCULAR & DEGENERATIVE LESIONS ARE SEEN IN KIDNEY & LIVER.

RABBITS EXPOSED TO 15,000 PPM ... DIED IN 70 MIN. EFFECTS OBSERVED PRECEDING DEATH WERE: CONJUNCTIVAL CONGESTION, SALIVATION, LABORED BREATHING ... ./SRP: CNS DEPRESSION/ CONVULSIONS.

For more Non-Human Toxicity Excerpts (Complete) data for METHYLCYCLOHEXANE (15 total), please visit the HSDB record page.

Inhalation, ingestion, eye and skin contact.

No toxic effects from industrial exposure nor any case of intoxication in humans by methylcyclohexane has been reported.

The air in 7 shoe (4 shoe and 3 shoe upper) factories was measured for the concentration of solvents including methylcyclohexane at different work places throughout the plant. Methylcyclohexane was found in the air in both places. The threshold limit value was exceeded in the gluing work places of factories without ventilation systems and in all shoe upper factories.

This action promulgates standards of performance for equipment leaks of Volatile Organic Compounds (VOC) in the Synthetic Organic Chemical Manufacturing Industry (SOCMI). The intended effect of these standards is to require all newly constructed, modified, and reconstructed SOCMI process units to use the best demonstrated system of continuous emission reduction for equipment leaks of VOC, considering costs, non air quality health and environmental impact and energy requirements. Methylcyclohexane is produced, as an intermediate or a final product, by process units covered under this subpart.

Used in organic synthesis, as a solvent for cellulose ethers, and in jet fuel. [ACGIH]

Used commercially as a solvent for cellulose derivatives particularly with othersolvents, and as an organic intermediate in organic synthesis. It is one of the components found in jet fuel.

2023: 4,000,000 - <5,500,000 lb

(1972) PROBABLY GREATER THAN 4.54X10+5 G

(1975) PROBABLY GREATER THAN 4.5X10+5 G

CATALYTIC HYDROGENATION OF TOLUENE

PREPARED BY REACTION BETWEEN BENZENE & METHANE AT HIGH TEMPERATURES.

/Methylcyclohexane/ ... occurs in certain crude petroleum oils ... separated by distillation. ... Also prepared ... by acidic hydrocracking of polycyclic aromatics.

All Other Basic Organic Chemical Manufacturing

Cyclohexane, methyl-: ACTIVE