MATERIAL
SAFETY
DATA SHEET
Linde
Gas LLC
LLC
AGA GAS,
INC. (216)
(216)642-6600
642-6600
Linde
Gas
P.O.
Box
94737
6055Box
ROCKSIDE
P.O.
94737 WOODS BLVD
Cleveland,
Ohio 44101
44101
P.O. BOX 94737
Cleveland,
Ohio
www.us.lindegas.com
CLEVELAND, OH 44101-4737
www.us.lindegas.com
No. 050
PRODUCT NAME
CAS #
Nitrogen Dioxide; Nitrogen Tetroxide; Nitrogen Peroxide
NO2
N2O4
=
=
10102-44-0
10544-72-6
DOT I.D. No.:
UN 1067; RQ 10(4.54)
DOT Hazard Class:
Division 2.3
Nitrogen Peroxide; Nitrogen Dioxide
Formula
N02; N2O4
ISSUE DATES AND REVISIONS
Chemical Family:
TRADE NAME AND SYNONYMS
Dinitrogen tetroxide (D.O.T.)
CHEMICAL NAME AND SYNONYMS
Oxide of Nitrogen
Revised
May 1998
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
3 Molar PPM; STEL = 5 Molar PPM (ACGIH 1997). OSHA 1995 Ceilinq limit = 5 Molar PPM.
SYMPTOMS OF EXPOSURE
Vapors are a strong irritant to the pulmonary tract. Contact with liquid causes a severe corrosive action on the skin or
eyes. Initial symptoms of inhalation may be moderate and include irritation of the eyes and throat, tightness of the
chest, headache, nausea and gradual loss of strength. Severe symptoms may be delayed (possibly for 5 to 7 hours)
and include cyanosis, increased difficulty in breathing, irregular respiration, lassitude and possible eventual death due
to pulmonary edema in untreated cases.
TOXICOLOGICAL PROPERTIES
The vapor is highly toxic and hazardous because of its ability to cause delayed chemical pneumonitis and pulmonary
edema. Chronic or repeated exposure may cause permanent decrements in pulmonary function (silo fillers disease).
The absence of marked acute irritation of nitrogen dioxide limits its warning properties. Contact with the liquid causes a
corrosive or chemical etching action on the skin or eyes.
Neither nitrogen dioxide or nitrogen tetroxide are listed in the IARC, NTP or by OSHA as a carcinogen or potential
carcinogen
(Continued on Page 4)
RECOMMENDED FIRST AID TREATMENT
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE TO NITROGEN DIOXIDE.
RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS AND WEAR
PROTECTIVE CLOTHING AND BOOTS IF THE LIQUID HAS SPILLED OR IS BEING DISCHARGED.
Inhalation: Conscious persons should be carried (not assisted) to an uncontaminated area and breathe fresh air
supplemented with oxygen. Keep the patient warm, quiet and under competent medical observation until the danger of
delayed pulmonary edema has passed (at least 72 hours). Any physical exertion during this period should be
discouraged as it may increase the severity of the pulmonary edema or chemical pneumonitis. Bed rest is indicated.
Unconscious persons should be moved to an uncontaminated area,
(Continued on Page 4)
Information contained in this material safety data sheet is offered without charge for use by technically qualified personnel at their discretion and
risk. All statements, technical information and recommendations contained herein are based on tests and data which we believe to be reliable, but
the accuracy or completeness thereof is not guaranteed and no warranty of any kind is made with respect thereto. This information is not intended
as a license to operate under or a recommendation to practice or infringe any patent of this Company or others covering any process, composition
of matter or use.
Since the Company shall have no control of the use of the product described herein, the Company assumes no liability for loss or damage incurred
from the proper or improper use of such product.
Nitrogen Dioxide; Nitrogen Tetroxide; Nitrogen
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
Nitrogen dioxide is extremely reactive and is a strong oxidizing agent. It explodes on contact with alcohols,
hydrocarbons, organic materials and fuels. Nitrogen dioxide decomposes on contact with water to produce nitric and
nitrous acids. It acts as a catalyst for the explosive reaction of oxyqen and hydrogen.
PHYSICAL DATA
BOILING POINT
LIQUID DENSITY AT BOILING POINT
70F (21.1C)
90.08 lb/ft3 (1,443 kg/m3)
VAPOR PRESSURE
GAS DENSITY AT 700F. 1 atm
@ 70F (21.1C) = 14.8 psia (102 kPa)
.204 lb/ft3 (3.27 kg/m3)
SOLUBILITY IN WATER
FREEZING POINT
EVAPORATION RATE
SPECIFIC GRAVITY (AIR=1)
Unknown; should be 99.9+% volatile
@ 70F
Decomposes to nitric and nitrous acids
APPEARANCE AND ODOR
11.84F
(-11.20C)
(21.1 C)
= 2.83
Yellow-brown liquid to reddish-brown gas with an acid suffocating odor.
FIRE AND EXPLOSION HAZARD DATA
AUTO IGNITION TEMPERATURE
FLASH POINT (Method used)
N/A
N/A
FLAMMABLE LIMITS % BY VOLUME (See Page 4)
LE
N/A
UEL
N/A
EXTINGUISHING MEDIA
ELECTRICAL CLASSIFICATION
Water spray or fog. Do not use halogenated materials.
Nonhazardous
SPECIAL FIRE FIGHTING PROCEDURES
Although nonflammable, nitrogen dioxide can support combustion. In case of fire, an attempt should be made to shut off the source
of nitrogen dioxide.
(Continued on Page 4)
UNUSUAL FIRE AND EXPLOSION HAZARDS
Nitrogen dioxide is a strong oxidizing agent and will support combustion.
REACTIVITY DATA
STABILITY
CONDITIONS TO AVOID
Unstable
Temperatures above 320F (160C)
Stable
INCOMPATIBILITY (Materials to avoid)
X
Hydrocarbons, fuels
HAZARDOUS DECOMPOSITION PRODUCTS
HAZARDOUS POLYMERIZATION
Nitric and nitrous acids
CONDITIONS TO AVOID
May Occur
Will Not Occur
None
X
SPILL OR LEAK PROCEDURES
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED
Evacuate all personnel from affected area. Use appropriate protective equipment. If leak is in users equipment, be
certain to purge piping with an inert gas prior to attempting repairs. If leak is in container or container valve, contact
your closest supplier location or call the emergency telephone number listed herein.
WASTE DISPOSAL METHOD
Do not attempt to dispose of 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 your supplier. For emergency disposal
assistance, contact your closest supplier location or call the emergency telephone number listed herein.
Nitroqen Dioxide
SPECIAL PROTECTION INFORMATION
RESPIRATORY PROTECTION
(Specify type)
Positive pressure air line with mask or self-contained
breathing apparatus should be available for emergency use.
VENTILATION
SPECIAL
LOCAL EXHAUST
N/A
To prevent accumulation above the TWA
Hood with forced ventilation
MECHANICAL (Gen.)
OTHER
N/A
N/A
PROTECTIVE GLOVES
Rubber or Teflon
EYE PROTECTION
Safety goggles or glasses plus face shield
OTHER PROTECTIVE EQUIPMENT
Safety shoes, safety shower, eyewash fountain,
SPECIAL PRECAUTIONS*
SPECIAL LABELING INFORMATION
DOT Shipping Name:
DOT Shipping Label(s):
Dinitrogen tetroxide
Toxic Gas; Oxidizer; Corrosive
DOT Hazard Class:
I.D. No.:
Division 2.3
UN 1067RO 10(4.54)
SPECIAL HANDLING RECOMMENDATIONS
Use only in well-ventilated areas. Valve protection caps and valve outlet threaded plugs 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. 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 hazardou back flow into the cylinder.
For additional handling recommendations, consult Compressed Gas Associations Pamphlet P-1.
SPECIAL STORAGE RECOMMENDATIONS
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 125F (52C). 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.
For additional storage recommendations, consult Compressed Gas Associations Pamphlet P-1.
SPECIAL PACKAGING RECOMMENDATIONS
Anhydrous nitrogen dioxide is noncorrosive to most metals at normal temperatures. It does corrode copper and its
alloys. Teflon is the preferred gasket material.
OTHER RECOMMENDATIONS OR PRECAUTIONS
Keep equipment scrupulously dry. Compressed gas cylinders should not be refilled except by qualified producers of
compressed gases. Shipment of a compressed gas cylinder which has not been filled by the owner or with his (written)
consent is a violation of Federal Law (49CFR).
(Continued on Page 4)
*Various Government Agencies (i.e. Department of Transportation, Occupational Safety and Health Administration, Food and Drug Administration
and others) may have specific regulations concerning the transportation, handling, storage or use of this product which will not be reflected in this
data sheet. The customer should review these regulations to ensure that he is in full compliance.
Nitrogen Dioxide
HEALTH HAZARD DATA
TOXICOLOGICAL PROPERTIES: (Continued)
Persons in ill health where such illness would be aggravated by exposure to nitrogen dioxide should not be allowed to
work with or handle this product.
RECOMMENDED FIRST AID TREATMENT: (Continued)
given assisted respiration and supplemental oxygen. Once respiration has been restored, they should be treated as
above.
Eye Contact:
PERSONS WITH POTENTIAL EXPOSURE TO NITROGEN DIOXIDE SHOULD NOT WEAR
CONTACT LENSES.
Flush contaminated eye(s) with copious quantities of water. Part eyelids to assure complete flushing. Continue for a
minimum of 15 minutes.
Skin Contact: Flush affected area with copious quantities of water. Remove affected clothing as rapidly as possible.
Subsequently treat as for a thermal burn.
FIRE AND EXPLOSION HAZARD DATA
SPECIAL FIRE FIGHTING PROCEDURES: (Continued)
Continued application of large quantities of water will eventually dilute the oxidizers so that combustion is no longer
supported. The remaining airsupported fire may be extinguished by the appropriate method.
SPECIAL PRECAUTONS
OTHER RECOMMENDATIONS OR PRECAUTIONS: (Continued)
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks of vehicles,
enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open flatbed or in open pick-up
type vehicles.
Reporting under SARA, Title IIr, Section 313 not required.
NFPA 704 NO. for nitrogen dioxide = 3 O O OX
