Perhexa P

  • 1-Hydroxy-1'-hydroperoxy dicyclohexyl peroxide
  • 1-[(1-Hydroperoxycyclohexyl)dioxy]cyclohexanol
  • 1-Hydroperoxycyclohexyl 1-hydroxycyclohexyl peroxide
  • Cyclohexanol, 1-[(1-hydroperoxycyclohexyl)dioxy]
Formula
C12H22O5
Structure
Description
Grayish paste.
Uses
As a catalyst for hardening of certain fiberglass resins.

Registry Numbers and Inventories.
CAS
78-18-2
EC (EINECS/ELINCS)
201-091-1
EC Index Number
617-010-00-1
EC Class
Explosive; Harmful; Corrosive
RTECS
GV9570000
RTECS class
Primary Irritant
UN (DOT)
9187
Beilstein/Gmelin
1567208
Beilstein Reference
4-07-00-00020
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H22O5
Formula mass
246.34
Melting point, °C
78 - 79
Boiling point, °C
374
Vapor pressure, mmHg
4E-7 (25 C)
Odor Threshold Odor threshold Odorless
Density
1.05 g/cm3 (20 C)
Solubility in water
Insoluble
Surface tension
30 g/s2
pKa/pKb
11.57 (pKa)
Partition coefficient, pKow
3.26
Heat of vaporization
72.0 kJ/mol
Heat of combustion
-8010 kJ/mol

Hazards and Protection.
Storage
should be stored in cool, ventilated, isolated area away from org or other easily oxidizable materials and.Acute fire hazards. Containers should be kept closed and clearly labeled. Peroxides, org because of their instability, many peroxides are stored and handled in an inert vehicle such as dimethylphthalate. Storage temperature should not exceed 30C.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Keep substance wet using water spray. Stop leak if you can do it without risk. SMALL SPILLS: Take up with inert, damp, noncombustible material using clean non-sparking tools and place into loosely covered plastic containers for later disposal.
Stability
No data.
Incompatibilities
Organic compounds can ignite on contact with concentrated peroxides, strongly reduced material such as sulfides, nitrides, and hydrides

Fire.
Flash Point,°C
180
Autoignition, °C
402
Fire fighting
SMALL FIRES: Water spray or fog is preferred; if water not available use dry chemical, carbon dioxide or regular foam. LARGE FIRES: Flood fire area with water from a distance. Use water spray or fog; do not use straight streams. Move containers from fire area if you can do it without risk. Do not move cargo or vehicle if cargo has been exposed to heat. Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
Fire potential
Dangerous fire hazard by chem reaction with reducing agents or exposure to heat. They are powerful oxidizers. Peroxides, organic although flashpoints of most organic peroxides are not exceptionally Low fire hazard, when ignited they burn more furiously than corresponding flammable liquid not containing the peroxy linkage. Org peroxides contain sufficient available oxygen to support their own combustion in absence of atmospheric oxygen.
Hazards
May explode from heat or contamination. May ignite combustibles (wood, paper, oil, clothing, etc.). May be ignited by heat, sparks or flames. May burn rapidly with flare-burning effect. Containers may explode when heated. Runoff may create fire or explosion hazard.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
 
Special
O

Health.
Exposure effects
Coma occurred 30 minutes after ingestion of mekp in one case.
   Ingestion
Spontaneous vomiting and hematemesis, with moderate to severe gastroesophageal injury (gastritis, hemorrhagic esophagitis) occurred in most cases; one case of gastric perforation and one case of esophageal strictures were reported.
   Inhalation
Respiratory complications following ingestion of mekp have included aspiration pneumonitis after spontaneous emesis, respiratory distress, and interstitial pneumonia/ards.
   Skin
See Inhalation.
   Eyes
METHYL ETHYL KETONE PEROXIDE is moderately irritating at concentrations of 3% and severely irritating in concentrations of 40% after ocular instillation. CYCLOHEXANONE PEROXIDE produces severe eye injury.

First aid
 
   Ingestion
Mucosal if no respiratory compromise is present, dilute immediately with milk or water; no more than 8 ounces in adults and 4 ounces in children. Gastric ipecac contraindicated. Consider insertion of a small, flexible nasogastric or orogastric tube to suction gastric contents after recent large ingestions; the risk of further mucosal injury must be weighed against potential benefits.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Flush with water for at least 15 min.; get medical attention.

Transport.
UN number
9187
Response guide
Hazard class
5.2
USCG CHRIS Code
CHP