MATERIAL SAFETY DATA SHEET
PRODUCT NAME: CARBONYL SULFIDE
1. Chemical Product and Company Identification
BOC Gases, BOC Gases
Division of Division of
The BOC Group, Inc. BOC Canada Limited
575 Mountain Avenue 5975 Falbourne Street, Unit 2
Murray Hill, NJ 07974 Mississauga, Ontario L5R 3W6
TELEPHONE NUMBER: (908) 464-8100 TELEPHONE NUMBER: (905) 501-1700
24-HOUR EMERGENCY TELEPHONE NUMBER: 24-HOUR EMERGENCY TELEPHONE NUMBER:
CHEMTREC (800) 424-9300 (905) 501-0802
EMERGENCY RESPONSE PLAN NO: 20101
PRODUCT NAME: CARBONYL SULFIDE
CHEMICAL NAME: Carbonyl Sulfide
COMMON NAMES/SYNONYMS: Carbon Oxysulfide, Carbon Oxide Sulfide
TDG (Canada) CLASSIFICATION: 2.3 (2.1)
WHMIS CLASSIFICATION: A, B1, D1A, D2A, D2B
PREPARED BY: Loss Control (908)464-8100/(905)501-1700
PREPARATION DATE: 6/1/95
REVIEW DATES: 6/7/96
2. Composition, Information on Ingredients
PEL-OSHA1 TLV-ACGIH2
INGREDIENT % VOLUME LD50 or LC50
Route/Species
Carbonyl Sulfide 100.0 Not Available Not Available LD50
FORMULA: COS 23 mg/kg
CAS: 463-58-1 (rat)
RTECS #: FG6400000
1
As stated in 29 CFR 1910, Subpart Z (revised July 1, 1993)
2
As stated in the ACGIH 1994-95 Threshold Limit Values for Chemical Substances and Physical Agents
3. Hazards Identification
EMERGENCY OVERVIEW
Irritating to the eyes, mucous membranes and respiratory system. Narcotic at high concentrations.
May decompose into hydrogen sulfide within body tissues resulting in inhibition of cellular respiration,
possible pulmonary paralysis, sudden collapse and death. Highly flammable.
ROUTE OF ENTRY:
Skin Contact Skin Absorption Eye Contact Inhalation Ingestion
Yes No Yes Yes No
MSDS: G-21
Revised: 6/7/96 Page 1 of 6
PRODUCT NAME: CARBONYL SULFIDE
HEALTH EFFECTS:
Exposure Limits Irritant Sensitization
No Yes No
Teratogen Reproductive Hazard Mutagen
No No No
Synergistic Effects
None Reported
Carcinogenicity: -- NTP: No IARC: No OSHA: No
EYE EFFECTS:
Low concentrations will generally cause irritation to the conjunctiva. Repeated exposure to low concentrations
is reported to cause conjunctivitis, photo phobia, corneal bullae, tearing, pain and blurred vision.
SKIN EFFECTS:
May irritate the skin upon contact.
INGESTION EFFECTS:
Ingestion is unlikely.
INHALATION EFFECTS:
Irritating and a narcotic at high concentrations. May decompose into hydrogen sulfide within body tissues.
Hydrogen sulfide reacts with enzymes in the bloodstream and inhibits cellular respiration resulting in pulmonary
paralysis, sudden collapse and death. Continuous exposure to low (15-50 ppm) concentrations will generally
cause irritation to mucous membranes, and may also cause headache, dizziness or nausea. Higher concentrations
(200-300 ppm) may result in respiratory arrest leading to coma or unconsciousness. Exposures for more than 30
minutes at concentrations greater than 700 ppm have been fatal.
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE:
Blood disorders.
NFPA HAZARD CODES HMIS HAZARD CODES RATINGS SYSTEM
Health: 3 Health: 3 0 = No Hazard
Flammability: 4 Flammability: 4 1 = Slight Hazard
Reactivity: 1 Reactivity: 1 2 = Moderate Hazard
3 = Serious Hazard
4 = Severe Hazard
4. First Aid Measures
EYES:
PERSONS WITH POTENTIAL EXPOSURE TO CARBONYL SULFIDE SHOULD NOT WEAR CONTACT
LENSES. Flush contaminated eyes with large amounts of water for at least 15 minutes. Part eyelids with
fingers to ensure complete flushing. If irritation persists, seek medical attention immediately.
SKIN:
Flush affected area with water. If irritation persists, consult a physician.
INGESTION:
Treat in a manner similar to inhalation exposure. Seek medical attention as soon as possible.
INHALATION:
MSDS: G-21
Revised: 6/7/96 Page 2 of 6
PRODUCT NAME: CARBONYL SULFIDE
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE. RESCUE
PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS AND
SHOULD RECOGNIZE THE HAZARDS OF OVEREXPOSURE DUE TO OLFACTORY FATIGUE. An
extreme fire hazard exists when rescuing semiconscious or unconscious persons due to the flammability hazard.
Avoid use of rescue equipment which may contain ignition sources or cause static discharge. Victims should be
assisted to an uncontaminated area and inhale fresh air. Quick removal from the contaminated area is most
important. If breathing has stopped administer artificial resuscitation and supplemental oxygen or a mixture of
5% carbon dioxide in oxygen. Keep victim calm and warm. Further treatment should be symptomatic and
supportive. Seek medical assistance immediately.
5. Fire Fighting Measures
Conditions of Flammability: Flammable
Flash point: Method: Autoignition
Not Available Not Applicable Temperature: Not Available
LEL(%): 12 UEL(%): 29
Hazardous combustion products: Sulfur Compounds
Sensitivity to mechanical shock: None
Sensitivity to static discharge: None
FIRE AND EXPLOSION HAZARDS:
Carbonyl sulfide is heavier than air and may accumulate in low areas and may travel a considerable distance to a
source of ignition. Should flame be extinguished and flow of gas continue, increase ventilation to prevent
flammable mixture formation in low areas or pockets. Product may explode or burn over a wide range of
mixtures in air.
EXTINGUISHING MEDIA:
Water, carbon dioxide, dry chemicals.
FIRE FIGHTING INSTRUCTIONS:
If possible, stop the flow of carbonyl sulfide. Use water spray to cool surrounding containers. Fire fighters
should use self-contained breathing apparatus.
6. Accidental Release Measures
Evacuate all personnel from affected area. Use appropriate protective equipment. If leak is in user鈥檚 equipment,
be certain to purge piping with inert gas prior to attempting repairs. If leak is in container or container valve,
contact the appropriate emergency telephone number listed in Section 1 or call your closest BOC location.
7. Handling and Storage
Electrical Classification:
Class I, Group D. Earth-ground and bond all lines and equipment associated with the Carbonyl Sulfide system.
All electrical equipment should be non-sparking or explosion proof.
Anhydrous carbonyl sulfide can be handled at normal temperatures with most metals. Moist carbonyl sulfide
should be handled in aluminum alloys 25 and 35, 316 stainless steel or 18-8 chromium-nickel steels. Teflon庐,
Kel-F庐, Viton庐 or Nylon庐 are preferred gasket materials.
Use only in well-ventilated areas. Valve protection caps must remain in place unless container is secured with
valve outlet piped to use point. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder
movement. Use a pressure reducing regulator when connecting cylinder to lower pressure (<400 psig) piping or
MSDS: G-21
Revised: 6/7/96 Page 3 of 6
PRODUCT NAME: CARBONYL SULFIDE
systems. Do not heat cylinder by any means to increase the discharge rate of product from the cylinder. Use a
check valve or trap in the discharge line to prevent hazardous back flow into the system.
Protect cylinders from physical damage. Store in cool, dry, well-ventilated area away from heavily trafficked
areas and emergency exits. Do not allow the temperature where cylinders are stored to exceed 130oF (54oC).
Cylinders should be stored upright and firmly secured to prevent falling or being knocked over. Full and empty
cylinders should be segregated. Use a "first in-first out" inventory system to prevent full cylinders being stored
for excessive periods of time. Post "NO SMOKING OR OPEN FLAMES" signs in the storage area or use area.
There should be no sources of ignition in the storage or use area.
For additional storage recommendations, consult Compressed Gas Association Pamphlet P-1.
Never carry a compressed gas cylinder or a container of a gas in cryogenic liquid form in an enclosed space such
as a car trunk, van or station wagon. A leak can result in a fire, explosion, asphyxiation or a toxic exposure.
8. Exposure Controls, Personal Protection
EXPOSURE LIMITS1:
PEL-OSHA2 TLV-ACGIH3
INGREDIENT % VOLUME LD50 or LC50
Route/Species
Carbonyl Sulfide 100.0 Not Available Not Available LD50
FORMULA: COS 23 mg/kg
CAS: 463-58-1 (rat)
RTECS #: FG6400000
1
Refer to individual state of provincial regulations, as applicable, for limits which may be more stringent than
those listed here.
2
As stated in 29 CFR 1910, Subpart Z (revised July 1, 1993)
3
As stated in the ACGIH 1994-1995 Threshold Limit Values for Chemical Substances and Physical Agents.
BOC recommends a 10 ppm 8-hr TWA limit and a 15 ppm 15-minute STEL limit based on the ACGIH TLV
and STEL limits for Hydrogen Sulfide.
ENGINEERING CONTROLS:
Hood with forced ventilation. Use local exhaust to prevent accumulation above exposure limit.
EYE/FACE PROTECTION:
Gas tight chemical goggles or full-face piece respirator.
SKIN PROTECTION:
Protective gloves: Neoprene, butyl rubber, PVC, polyethylene.
RESPIRATORY PROTECTION:
Positive pressure air line with full-face mask and escape bottle or self-contained breathing apparatus should be
available for emergency use.
OTHER/GENERAL PROTECTION:
Safety shoes, safety shower, eyewash "fountain".
MSDS: G-21
Revised: 6/7/96 Page 4 of 6
PRODUCT NAME: CARBONYL SULFIDE
9. Physical and Chemical Properties
PARAMETER VALUE UNITS
Physical state (gas, liquid, solid) : Gas
Vapor pressure at 70 oF : 168 psia
Vapor density at STP (Air = 1) : 2.03
Evaporation point : Not Available
o
Boiling point : -58.4 F
o
C
: -50.2
o
Freezing point : -216.8 F
o
: -138.2 C
pH : Not Available
Specific gravity : Not Available
Oil/water partition coefficient : Not Available
Solubility (H20) : Slightly soluble
Odor threshold : Not Available
Odor and appearance : Colorless gas with rotten egg odor.
10. Stability and Reactivity
STABILITY:
Stable
INCOMPATIBLE MATERIALS:
Reacts with oxidizers and forms explosive mixtures with oxygen. Hydrolyzes slowly in water, forming hydrogen
sulfide and carbon dioxide.
HAZARDOUS DECOMPOSITION PRODUCTS:
Oxides of sulfur.
HAZARDOUS POLYMERIZATION:
Will not occur.
11. Toxicological Information
No chronic effects data given in the Registry of Toxic Effects of Chemical Substances (RTECS) or Sax,
Dangerous Properties of Industrial Materials, 7th ed.
12. Ecological Information
No data given.
13. Disposal Considerations
Do not attempt to dispose of residual waste or unused quantities. Return in the shipping container PROPERLY
LABELED, WITH ANY VALVE OUTLET PLUGS OR CAPS SECURED AND VALVE PROTECTION CAP
IN PLACE to BOC Gases or authorized distributor for proper disposal.
MSDS: G-21
Revised: 6/7/96 Page 5 of 6
PRODUCT NAME: CARBONYL SULFIDE
14. Transport Information
PARAMETER United States DOT Canada TDG
Carbonyl Sulfide Carbonyl Sulfide
PROPER SHIPPING NAME:
2.3 2.3 (2.1)
HAZARD CLASS:
UN 2204 UN 2204
IDENTIFICATION NUMBER:
POISON GAS, FLAMMABLE GAS POISON GAS, FLAMMABLE GAS
SHIPPING LABEL:
Additional Marking Requirement: 鈥淚nhalation Hazard鈥?
Additional Shipping Paper Description Requirement: 鈥淧oison Inhalation-Hazard, Zone B鈥?
15. Regulatory Information
Carbonyl sulfide is listed under the accident prevention provisions of section 112(r) of the Clean Air Act (CAA)
with a threshold quantity (TQ) of 10,000 pounds.
SARA TITLE III - NOTIFICATIONS AND INFORMATION
Releases of carbonyl sulfide in quantities equal to or greater than the reportable quantity (RQ) of 100 pounds are
subject to reporting to the National Response Center under CERCLA, Section 304 SARA Title III.
SARA TITLE III - HAZARD CLASSES:
Acute Health Hazard
Fire Hazard
Sudden Release of Pressure Hazard
SARA TITLE III - SECTION 313 SUPPLIER NOTIFICATION:
This product contains the following toxic chemicals subject to the reporting requirements of section 313 of the
Emergency Planning and Community Right-To-Know Act (EPCRA) of 1986 and of 40 CFR 372:
CAS NUMBER INGREDIENT NAME PERCENT BY VOLUME
463-58-1 CARBONYL SULFIDE 100.0
This information must be included on all MSDSs that are copied and distributed for this material.
16. Other Information
Compressed gas cylinders shall not be refilled without the express written permission of the owner. Shipment of
a compressed gas cylinder which has not been filled by the owner or with his/her (written) consent is a
violation of transportation regulations.
DISCLAIMER OF EXPRESSED AND IMPLIED WARRANTIES:
Although reasonable care has been taken in the preparation of this document, we extend no warranties and make
no representations as to the accuracy or completeness of the information contained herein, and assume no
responsibility regarding the suitability of this information for the user's intended purposes or for the
consequences of its use. Each individual should make a determination as to the suitability of the information for
their particular purpose(s).
MSDS: G-21
Revised: 6/7/96 Page 6 of 6
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