RAE Systems NON-FLAMMABLE GAS MIXTURE DATA SHEET
MATERIAL SAFETY DATA SHEET
CHEMICAL NAME; CLASS: NON-FLAMMABLE GAS MIXTURE
Containing One or More of the Following Components in a Nitrogen Balance Gas: Oxygen, 0.0015-
23.5%;Methane, 0.0005-2.5%;Carbon Monoxide, 0.0005-1.0%; Hy drogen Sulfide, 0.001-0.025%
SYNONYMS: Not Applicable CHEMICAL FAMILY NAME: Not Applicable FORMULA: Not Applicable
Document Number: 50018
Note: The Material Safety Data Sheet is for this gas mixture supplied in cylinders with 33 cubic feet (935 liters) or less gas capacity (DOT - 39 cylinders). This MSDS has
been developed for various gas mixtures with the composition of components within the ranges listed in Section 2 (Composition and Information on Ingredients). Refer to
the product label for information on the actual composition of the product.
PRODUCT USE: Calibration of Monitoring and Research Equipment
U.S. SUPPLIER/MANUFACTURER'S NA ME: CALGAZ
ADDRESS: 821 Chesapeake Drive
Cambridge, MD 21613
BUSINESS PHONE: 1-410-228-6400 (8 a.m. to 5 p.m. U.S. EST)
General MSDS Information: 1-713-868-0440
Fax on Demand: 1-800-231-1366
EMERGENCY PHONE:
Chemtrec: United States/Canada/Puerto Rico: 1-800-424-9300 [24-hours]
Chemtrec International: 1-703-527-3887 [24-hours]
CHEMICAL NAME CAS # mole % EXPOSURE LIMITS IN AIR
ACGIH OSHA NIOSH OTHER
TLV STEL PEL STEL IDLH
ppm ppm ppm ppm ppm ppm
Oxygen 7782-44-7 0.0015 -
Methane 74-82-8 0.0005 -
Hydrogen Sulfide 7783-06-4 0.001-
Carbon Monoxide 630-08-0 0.0005 -
Nitrogen 7727-37-9 Balance
NE = Not Established. NIC = Notice of Intended Change See Section 16 for Definitions of Terms Used.
NOTE ( 1): ALL WHMIS required information is included in appropriate sections based on the ANSI Z400.1-1998 format. Thi s gas mixture has been classified in
accordance with the hazard criteria of the CPR and the MSDS contains all the information required by the CPR.
EMERGENCY OVERVIEW: This gas mixture is a colorless gas which has a rotten-egg odor (due to the presence of Hydrogen Sulfide). The odor cannot be relied
on as an adequate warning of the presence of this gas mixture, because olfactory fatigue occurs after over-exposure to Hydrogen Sulfide. Hydrogen Sulfide and
Carbon Monoxide (another component of this gas mixture) are toxic to humans in relatively low concentrations. Over-ex posure to this gas mixture can cause skin or
eye irritation, nausea, dizziness, headaches, collapse, unconsciousness, coma, and death. Additionally, releases of this gas mixture may produce oxygen-deficient
atmospheres (especially in small confined spaces or other poorly-ventilated environments); individuals in such atmospheres may be asphy x iated.
SYMPTOMS OF OVER-EXPOSURE BY ROUTE OF EXPOSURE: The most significant route of
over-exposure for this gas mixture is by inhalation.
INHALATION: Due to the small size of an individual cylinder of this gas mixture, no unusual
health effects from over-exposure to the product are anticipated under routine circumstances of
use. A potential health hazard associated with this gas mixture is the potential of inhalation of
Hydrogen Sulfide, a component of this gas mixture. Such over-exposures may occur if this gas
mixture is used in a confined space or other poorly-ventilated area. Over-exposures to Hydrogen
Sulfide can cause dizziness, headache, and nausea. Over-exposure to this gas could result in
respiratory arrest, coma, or unconsciousness, due to the presence of Hydrogen Sulfide.
Continuous inhalation of low concentrations of Hydrogen Sulfide may cause olfactory fatigue, so
that the odor is no longer an effective warning of the presence of this gas. A summary of exposure
concentrations and observed effects are as follows:
CONCENTRATION OF
HYDROGEN SULFIDE
0.3-30 ppm Odor is unpleasant.
50 ppm Eye irritation. Dryness and irritation of nose, throat.
Slightly higher than 50 ppm Irritation of the respiratory system.
100-150 ppm Temporary loss of smell.
200-250 ppm Headache, vomiting nausea. Prolonged exposure
300-500 Swifter onset of symptoms. Death occurs in 1-4 hours.
500 ppm Headache, excitement, staggering, and stomach ache after brief exposure. Death occurs within 0.5 - 1
> 600 ppm Rapid onset of unconsciousness, coma, death.
> 1000 ppm Immediate respiratory arrest.
NOTE: This gas mixture contains a maximum of 250 ppm Hydrogen Sulfide. The higher concentration values
here are presented to delineate the complete health effects which have been observed for humans after exposure to Hydrogen Sulfide.
2. COMPOSITION and INFORMATION ON INGREDIENTS
OBSERVED EFFECT
Prepared to U.S. OSHA, CMA, ANSI and Canadian WHMIS Standards
1. PRODUCT IDENTIFICATION
23.5%
2.5%
0.025 %
1.0%
lead to lung damage. Exposures of 4-8 hours can be fatal.
hour of exposure.
There are no specific exposure limits for Oxygen. Oxygen levels should be maintained abov e 19.5%.
There are no specific exposure limits for Methane. Methane is a simple asphyxiant (SA). Oxygen
10
(NIC = 5)
25 NE 50
There are no specific exposure limits for Nitrogen. Nitrogen is a simple asphyxiant (SA). Oxygen levels
15 10 (Vacated
levels should be maintained above 19.5%.
1989 PEL)
35 (Vacated
1989 PEL)
should be maintained above 19.5%.
3. HAZARD IDENTIFICATION
20 (ceiling); 50
(ceiling, 10 min.
peak once per 8-
hour shift
15 (vacated
1989 PEL)
200 [ceiling]
(Vacated 1989
PEL)
HEALTH HAZARD
FLAMMABILITY HAZARD
PHYSICAL HAZARD
may
100 NIOSH REL: STEL = 10
1200 NIOSH R ELS: TWA = 35
HAZARDOUS MATERIAL IDENTIFICATION SYSTEM
(ceiling) 10 minutes
DFG-MAKs: TWA = 10
PEAK = 2•MAK, 10 min.,
momentary value
STEL = 200 (ceiling)
DFG MAKs: TWA = 30
PEAK = 2•MAK, 15 min.,
average value
DFG MAK Pregnancy Risk
Classification: B
(BLUE)
(YELLOW)
(RED)
3
0
0
PROTECTIVE EQUIPMENT
EYES
RESPIRATORY
See Section 8
For Routine Industrial Use and Handling Applications
HANDS
BODY
NON-FLAMMABLE GA S MIXTURE MSDS - 50018 EFFECTIVE DATE: FEBRUARY 16, 2011
PAGE 1 OF 6
3. HAZARD IDENTIFICATION (continued)
Inhalation over-exposures to atmospheres containing more than the Threshold Limit Value of Carbon Monoxide (25 ppm), another component of
this gas mixture, can result in serious health consequences. Carbon Monoxide is classified as a chemical asphyxiant, producing a toxic action by
combining with the hemoglobin of the blood and replacing the available oxygen. Through this replacement, the body is deprived of the required
oxygen, and asphyxiation occurs. Since the affinity of Carbon Monoxide for hemoglobin is about 200-300 times that of oxygen, only a small amount
of Carbon Monoxide will cause a toxic reaction to occur. Carbon Monoxide exposures in excess of 50 ppm will produce symptoms of poisoning if
breathed for a sufficiently long time. If this gas mixture is released in a small, poorly ventilated area (i.e. an enclosed or confined space), symptoms
which may develop include the following:
CONCENTRATION OF
CARBON MONOXIDE
OBSERVED EFFECT
All exposure levels: Over-exposure to Carbon Monoxide can be indicated by the lips and fingernails turning
bright red.
200 ppm: Slight symptoms (i.e. headache) after several hours of exposure.
400 ppm: Headache and discomfort experienced within 2-3 hours of exposure.
1,000 -2000 ppm: Within 30 minutes, slight palpitations of the heart occurs. Within 1.5 hours, there is a
tendency to stagger.
200-2500 ppm: Within 2 hours, there is mental confusion, headaches, and nausea. Unconsciousness within
30 minutes.
>2500 ppm: Potential for collapse and death before warning symptoms.
Additionally, if mixtures of this gas mixture contain less than 19.5% Oxygen and are released in a small, poorly ventilated area (i.e. an enclosed or
confined space), an oxygen-deficient environment may occur. Individuals breathing such an atmosphere may experience symptoms which include
headaches, ringing in ears, dizziness, drowsiness, unconsciousness, nausea, vomiting, and depression of all the senses. Under some circumstances
of over-exposure, death may occur. The following effects associated with various levels of oxygen are as follows:
CONCENTRATION OF OXYGEN
OBSERVED EFFECT
12-16% Oxygen: Breathing and pulse rate increased, muscular coordination slightly disturbed.
10-14% Oxygen: Emotional upset, abnormal fatigue, disturbed respiration.
6-10% Oxygen: Nausea, vomiting, collapse, or loss of consciousness.
Below 6%: Convulsive movements, possible respiratory collapse, and death.
SKIN and EYE CONTACT: Hydrogen Sulfide, a component of this gas mixture, may be irritating to the skin. Inflammation and irritation of the eyes
can occur at very low airborne concentration of Hydrogen Sulfide (less than 10 ppm). Exposure over several hours may result in “gas eyes” or
“sore eyes” with symptoms of scratchiness, irritation, tearing and burning. Above 50 ppm of Hydrogen Sulfide, there is an intense tearing, blurring
of vision, and pain when looking at light. Over-exposed individuals may see rings around bright lights. Most symptoms disappear when exposure
ceases. However, in serious cases, the eye can be permanently damaged.
HEALTH EFFECTS OR RISKS FROM EXPOSURE: An Explanation in Lay Terms. Over-exposure to this gas mixture may cause the following
health effects:
ACUTE: Due to the small size of the individual cylinder of this gas mixture, no unusual health effects from exposure to the product are anticipated
under routine circumstances of use. However the Hydrogen Sulfide and Carbon Monoxide components of this gas mixture are toxic to humans.
Over-exposure to this gas mixture can cause nausea, dizziness, headaches, collapse, unconsciousness, coma, and death. Due to the presence of
Hydrogen Sulfide, over-exposures to this gas mixture can also irritate the skin and eyes; severe eye contamination can result in blindness.
CHRONIC: Severe over-exposures to the Hydrogen Sulfide component of this gas mixture, which do not result in death, may cause long-term
symptoms such as memory loss, paralysis of facial muscles, or nerve tissue damage. In serious cases of over-exposure, the eyes can be
permanently damaged. Skin disorders and respiratory conditions may be aggravated by repeated over-exposures to this gas product. Refer to
Section 11 (Toxicology Information) for additional information on the components of this gas mixture. Chronic exposure to oxygen-deficient
atmospheres (below 18% oxygen in air) may affect the heart and nervous system.
TARGET ORGANS: ACUTE: Respiratory system, blood sy stem, central nervous sy stem effects, cardiovascular sy stem, skin, ey es. CHRONIC:
Neurological system, reproductive system, eyes.
4. FIRST-AID MEASURES
RESCUERS SHOULD NOT ATTEMPT TO RETRIEVE VICTIMS OF EXPOSURE TO THIS GAS MIXTURE WITHOUT ADEQUATE PERSONAL
PROTECTIVE EQUIPMENT. At a minimum, Self-Contained Breathing Apparatus must be worn.
Victim(s) who experience any adverse
effect after over-exposure to this gas mixture must be taken for medical attention. Rescuers should be taken for medical attention if necessary.
Take a copy of the label and the MSDS to physician or other health professional with victim(s).
No unusual health effects are anticipated after exposure to this gas mixture, due to the small cylinder size. If any adverse symptom develops after
over-exposure to this gas mixture, remove victim(s) to fresh air as quickly as possible. Only trained personnel should administer supplemental
oxygen and/or cardio-pulmonary resuscitation if necessary.
SKIN EXPOSURE: If irritation of the skin develops after exposure to this gas mixture, immediately
Minimum
flushing is for 15 minutes. Remove exposed or contaminated clothing, taking care not to contaminate eyes. Victim must seek immediate
begin decontamination with running water.
medical attention.
EYE EXPOSURE: If irritation of the eye develops after exposure to this gas mixture, open victim's eyes while under gentle running water. Use
sufficient force to open eyelids. Have victim "roll" eyes. Minimum
flushing is for 15 minutes. Seek medical assistance immediately, preferably an
ophthalmologist.
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Pre-existing respiratory conditions may be aggravated by over-exposure to this gas
mixture. Carbon Monoxide, a component of this gas mixture, can aggravate some diseases of the cardiovascular system, such as coronary artery
disease and angina pectoris. Because of the presence of Hydrogen Sulfide, eye disorders or skin problems may be aggravated by over-exposure
to this gas mixture.
RECOMMENDATIONS TO PHYSICIANS: Treat symptoms and eliminate over-exposure. Hyperbaric oxygen is the most efficient antidote to
Carbon Monoxide poisoning, the optimum range being 2-2.5 atm. A special mask, or, preferably, a compression chamber to utilize oxygen at these
pressures is required. Avoid administering stimulant drugs. Be observant for initial signs of pulmonary edema in the event of severe inhalation
over-exposures.
5. FIRE-FIGHTING MEASURES
FLASH POINT: Not applicable.
AUTOIGNITION TEMPERATURE: Not applicable.
FLAMMABLE LIMITS (in air by volume, %):
Lower (LEL)
Upper (UEL)
: Not applicable.
: Not applicable.
FIRE EXTINGUISHING MATERIALS: Non-flammable gas mixture. Use extinguishing
media appropriate for surrounding fire.
HEALTH
NFPA RATING
FLAMMABILITY
0
3
0
REACTIVITY
UNUSUAL FIRE AND EXPLOSION HAZARDS: This gas mixture contains toxic gases,
Hydrogen Sulfide and Carbon Monoxide, and presents an health hazard to firefighters.
This gas mixture is not flammable; however, containers, when involved in fire, may rupture
or burst in the heat of the fire.
Explosion Sensitivity to Mechanical Impact
Explosion Sensitivity to Static Discharge
: Not Sensitive.
: Not Sensitive.
SPECIAL FIRE-FIGHTING PROCEDURES: Structural firefighters must wear Self-Contained Breathing Apparatus and full protective equipment.
OTHER
6. ACCIDENTAL RELEASE MEASURES
LEAK RESPONSE: Due to the small size and content of the cylinder, an accidental release of this gas mixture presents significantly less risk of
over-exposure to Hydrogen Sulfide and Carbon Monoxide, the toxic components of this gas mixture, and other safety hazards related to the
remaining components of this gas mixture, than a similar release from a larger cylinder. However, as with any chemical release, extreme caution
must be used during emergency response procedures. In the event of a
chemicals are
procedures.
potentially involved, evacuate immediate area. Such releases should be responded to by trained personnel using pre-planned
Proper protective equipment should be used. In case of a leak, clear the affected area, protect people, and respond with trained
personnel. For emergency disposal,
release in which the atmosphere is unknown, and in which other
NON-FLAMMABLE GA S MIXTURE MSDS - 50018 EFFECTIVE DATE: FEBRUARY 16, 2011
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