Chloral

  • Chloral, anhydrous, inhibited
  • Trichloroacetaldehyde
Formula
Cl3CCHO
Structure
Description
A colorless oily liquid with a penetrating odor.
Uses
Used in spraying & pouring of polyurethanes.

Registry Numbers and Inventories.
CAS
75-87-6
EC (EINECS/ELINCS)
200-911-5
R 26 22 36/37/38
S 26 28 36/37/39 45
RTECS
FM7870000
RTECS class
Tumorigen; Drug; Mutagen
UN (DOT)
2075
Merck
12,9755
Beilstein/Gmelin
506422
Beilstein Reference
4-01-00-03142
RCRA
U034
Swiss Giftliste 1
G-1383
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2HCl3O
Formula mass
147.39
Boiling point, °C
97.8
Vapor pressure, mmHg
40 (25 C)
Vapor density (air=1)
5.1
Odor Threshold Odor threshold 0.047 ppm
Density
1.54175 g/cm3 (0 C)
Solubility in water
Insoluble
Viscosity
1.26 cp (25 C)
Surface tension
25.34 g/s2
Refractive index
1.45298 (20 C)
Partition coefficient, pKow
2.64
Heat of vaporization
33.7 kJ/mol

Hazards and Protection.
Storage
Store at with ventilation along the floor. stores well under ordinary storage conditions. Avoid exposure to light.
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
Avoid breathing vapors, keep upwind. Avoid bodily contact, wear boots, protective gloves and goggles. Wear full protective clothing if contact with material anticipated. Wear self- contained breathing apparatus when fighting fires involving chloral.).
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
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 personnel hazard.
Stability
No data.
Incompatibilities
Reacts with water to form chloral hydrate.

Fire.
Flash Point,°C
15
Upper exp. limit, %
14.7
Lower exp. limit, %
7.8
Fire fighting
Fire Extinguishing Agents: Small fires: Dry chemical, carbon dioxide, water spray or foam. Large fires: Water spray, fog or foam.
Fire potential
May burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. May polymerize explosively when heated or involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Combustion products
Contain toxic and irritating gases including phosgene.

Health.
Poison_Class
3
Exposure effects
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. Volatile chemicals have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2075
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
TCH
 
Std. Transport #
4921786