paraldehyde 123-63-7 MSDS
Name: Paraldehyde Material Safety Data Sheet
Synonym: 2,4,6-Trimethyl-1,3,5-trioxane; Paracetaldehyd
CAS: 123-63-7
Section 1 - Chemical Product   MSDS Name:Paraldehyde Material Safety Data Sheet
Synonym:2,4,6-Trimethyl-1,3,5-trioxane; Paracetaldehyd

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
123-63-7 Paraldehyde 100.0 204-639-8
Hazard Symbols: F
Risk Phrases: 11

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Highly flammable.
Potential Health Effects
Eye:
Causes eye irritation. May result in corneal injury.
Skin:
Exposure may cause irritation characterized by redness, dryness, and inflammation.
Ingestion:
May cause irritation of the digestive tract. May cause central nervous system depression, kidney damage, and liver damage. Symptoms may include: headache, excitement, fatigue, nausea, vomiting, stupor, and coma.
Inhalation:
Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause liver and kidney damage.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Chronic inhalation may cause effects similar to those of acute inhalation.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
Containers can build up pressure if exposed to heat and/or fire. As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors can travel to a source of ignition and flash back. Use water spray to keep fire-exposed containers cool.
Extinguishing Media:
Use dry chemical, carbon dioxide, or alcohol-resistant foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Wear appropriate protective clothing to minimize contact with skin. Remove all sources of ignition.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Storage:
Keep away from sources of ignition. Store in a tightly closed container.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits.
Exposure Limits CAS# 123-63-7: Russia: 5 mg/m3 TWA Personal Protective Equipment Eyes: Wear chemical splash goggles and face shield.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear polyethylene gloves, apron, and/or clothing.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: colorless
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available
Boiling Point: 124 deg C
Freezing/Melting Point: 12 deg C
Autoignition Temperature: Not applicable.
Flash Point: 17 deg C ( 62.60 deg F)
Explosion Limits, lower: 1.3
Explosion Limits, upper: 7
Decomposition Temperature:
Solubility in water: Miscible with water
Specific Gravity/Density: 0.99
Molecular Formula: (CH3CHO)3
Molecular Weight: 132.0822

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable.
Conditions to Avoid:
High temperatures, temperatures above 220C.
Incompatibilities with Other Materials:
Oxidizing materials Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 123-63-7: YK0525000 LD50/LC50:
CAS# 123-63-7: Draize test, rabbit, eye: 5 mg Severe; Oral, mouse: LD50 = 2750 mg/kg; Oral, rabbit: LD50 = 3304 mg/kg; Oral, rat: LD50 = 1530 mg/kg; Skin, rabbit: LD50 = 14100 uL/kg.
Carcinogenicity:
Paraldehyde - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: PARALDEHYDE
Hazard Class: 3
UN Number: 1264
Packing Group: III
IMO
Shipping Name: PARALDEHYDE
Hazard Class: 3
UN Number: 1264
Packing Group: III
RID/ADR
Shipping Name: PARALDEHYDE
Hazard Class: 3
UN Number: 1264
Packing group: III
USA RQ: CAS# 123-63-7: 1000 lb final RQ; 454 kg final RQ

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: F
Risk Phrases:
R 11 Highly flammable.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 29 Do not empty into drains.
S 33 Take precautionary measures against static
discharges.
WGK (Water Danger/Protection)
CAS# 123-63-7: No information available.
Canada
CAS# 123-63-7 is listed on Canada's DSL List.
CAS# 123-63-7 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 123-63-7 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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