MATERIAL SAFETY DATA SHEET
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
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: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
CHEMICAL NAME: Acetaldehyde in Nitrogen
COMMON NAMES/SYNONYMS: Acetaldehyde (1 ppm to 2%) in Nitrogen
TDG (Canada) CLASSIFICATION: 2.2
WHMIS CLASSIFICATION: A, 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
Nitrogen > 98.0 Simple Asphyxiant Simple Asphyxiant Not Available
FORMULA: N2
CAS: 7727-37-9
RTECS #: QW9700000
Acetaldehyde < 2.0 200 ppm TWA 25 ppm Ceiling, A3 LC50
FORMULA: C2H4O 1500 ppm/4H
CAS: 75-07-0 (mouse)
RTECS #: AB1925000
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
Simple Asphyxiant. When inhaled, this substance reduces the ability of the blood to carry oxygen.
Effects due to reduced oxygen carrying capacity include headache, weakness, dizziness, and mental
confusion. Irritating to the eyes, mucous membranes and respiratory system.
ROUTE OF ENTRY:
Skin Contact Skin Absorption Eye Contact Inhalation Ingestion
Yes No Yes Yes Yes
MSDS: G-28
Revised: 6/7/96 Page 1 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
HEALTH EFFECTS:
Exposure Limits Irritant Sensitization
Yes Yes No
Teratogen Reproductive Hazard Mutagen
Yes Yes Yes
Synergistic Effects
None Reported
Carcinogenicity: -- NTP: Yes IARC: Yes OSHA: No
EYE EFFECTS:
Vapors may irritate or burn eyes leaving serious inflamation.
SKIN EFFECTS:
Vapors or liquid may be poisonous if inhaled or absorbed through the skin.
INGESTION EFFECTS:
None specified.
INHALATION EFFECTS:
May cause respiratory irritation, bronchitis, lung edema and central nervous system effects. Death at large
concentrations is due to anesthesia or lung paralysis when prompt, or to lung edema when delayed.
This product is a simple asphyxiant. Effects of oxygen deficiency resulting from simple asphyxiants may
include: rapid breathing, diminished mental alertness, impaired muscular coordination, faulty judgement,
depression of all sensations, emotional instability, and fatigue. As asphyxiation progresses, nausea, vomiting,
prostration, and loss of consciousness may result, eventually leading to convulsions, coma, and death.
Oxygen deficiency during pregnancy has produced developmental abnormalities in humans and experimental
animals.
The liberation of a large amount of this product in a confined area could displace the amount of oxygen in air
necessary to support life. It should be recognized that it is possible that none of the above symptoms may occur
in nitrogen asphyxia so that there may be no definite warning symptoms.
Overexposure to acetaldehyde may cause abnormalities in embryonic development. Acetaldehyde induces
chromosomal aberation in a variety of test systems.
Overexposure to acetylene may cause difficulties in pregnancy.
MEDICAL CONDITIONS AGGRAVATED BY OVEREXPOSURE:
Individuals with pre-existing conditions of the heart, lungs and blood may have increased susceptibility to
symptoms of asphyxia.
NFPA HAZARD CODES HMIS HAZARD CODES RATINGS SYSTEM
Health: 2 (acetaldehyde) Health: 2 (acetaldehyde) 0 = No Hazard
Flammability: 0 Flammability: 0 1 = Slight Hazard
Reactivity: 2 (acetaldehyde) Reactivity: 2 (acetaldehyde) 2 = Moderate Hazard
3 = Serious Hazard
4 = Severe Hazard
MSDS: G-28
Revised: 6/7/96 Page 2 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
4. First Aid Measures
EYES:
If pain is present, refer the victim to an ophthalmologist for treatment and follow up.
SKIN:
For dermal contact: Remove contaminated clothing and flush affected areas with lukewarm water for at least 15
minutes. If irritation persists, seek medical attention.
INGESTION:
Not specified. Seek immediate medical attention.
INHALATION:
PROMPT MEDICAL ATTENTION IS NECESSARY IN ALL CASES OF OVEREXPOSURE. RESCUE
PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING APPARATUS.
Remove the victim from the contaminated area as soon as possible. If victim is not breathing, ensure that an
airway is open and administer CPR. If necessary, provide additional air or oxygen once breathing is restored.
5. Fire Fighting Measures
Conditions of Flammability: Nonflammable
Flash point: Method: Autoignition
None Not Applicable Temperature: None
LEL(%): None UEL(%): None
Hazardous combustion products: None
Sensitivity to mechanical shock: None
Sensitivity to static discharge: None
FIRE AND EXPLOSION HAZARDS:
Non-flammable gas.
6. Accidental Release Measures
Evacuate all personnel from affected area. Use appropriate protective equipment. If leak is in user's 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.
MSDS: G-28
Revised: 6/7/96 Page 3 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
7. Handling and Storage
Nitrogen is non-corrosive and may be used with any common structural material.
Use only in well-ventilated areas. Valve protection caps must remain in place unless container is secured with
valve protection 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 (<3000 psig)
piping or 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 cylinder.
Protect cylinders from physical damage. Store in cool, dry, well-ventilated area of non-combustible construction
away from heavily trafficked areas and emergency exits. Do not allow the temperature where cylinders are
stored to exceed 125oF (52oC). Cylinders should be stored upright and firmly secured to prevent falling or being
knocked over. Use a "first in-first out" inventory system to prevent full cylinders being stored for excessive
periods of time.
For additional recommendations, consult Compressed Gas Association Pamphlets P-1, P-14, P-9, and Safety
Bulletin SB-2.
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
Nitrogen > 98.0 Simple Asphyxiant Simple Asphyxiant Not Available
FORMULA: N2
CAS: 7727-37-9
RTECS #: QW9700000
Acetaldehyde < 2.0 200 ppm TWA 25 ppm Ceiling, A3 LC50
FORMULA: C2H4O 1500 ppm/4H
CAS: 75-07-0 (mouse)
RTECS #: AB1925000
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.
ENGINEERING CONTROLS:
Use adequate ventilation to keep vapor concentrations of this product below occupational exposure limits. In
confined spaces, local and general ventilation should be provided.
EYE/FACE PROTECTION:
Eye/face protection is recommended in all instances of exposure, and may be necessary if concentrations are to
exceed exposure limits.
Contact lenses should not be worn when working with this product.
MSDS: G-28
Revised: 6/7/96 Page 4 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
SKIN PROTECTION:
Where contact may occur wear apron, faceshield, and cold-impervious, insulating gloves.
RESPIRATORY PROTECTION:
Use a NIOSH/MSHA-approved positive pressure, supplied air respirator with escape bottle or self-contained
breathing apparatus (SCBA) for gas concentrations above occupational exposure limits, for potential for
uncontrolled release, if exposure levels are not known or in an oxygen-deficient atmosphere.
Refer to OSHA 1910.134, ANSI Z88,2-1992, and NIOSH Respirator Decision Logic for additional guidance for
respiratory protection.
In addition, a complete respiratory protection program should be instituted which includes regular training,
maintenance, inspection, cleaning and evaluation.
9. Physical and Chemical Properties
PARAMETER VALUE UNITS
Physical state (gas, liquid, solid) : Gas
Vapor pressure : Above critical temp. psia
Vapor density (Air = 1) : 0.97
Evaporation point : Not Available
: ~ -320.4 o
Boiling point F
~ o
: -195.8 C
: ~ -345.9 o
Freezing point F
: ~ -209.9 o
C
pH : Not Available
Specific gravity : Not Available
Oil/water partition coefficient : Not Available
Solubility (H20) : Very slightly soluble
Odor threshold : High: 4.14 mg/m3
Low: 0.0002 mg/m3
Odor and appearance : Pungent fruity odor; A colorless gas
10. Stability and Reactivity
STABILITY:
Stable
HAZARDOUS POLYMERIZATION:
Will not polymerize.
11. Toxicological Information
ACUTE STUDIES:
Acetaldehyde may cause changes in auditory sensitivity at 0.05 mg/m3.
EYE EFFECTS:
Acetaldehyde may cause light sensitivity at 0.05 mg/m3. Repeated exposure to vapors causes conjunctivitis.
MSDS: G-28
Revised: 6/7/96 Page 5 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
SKIN EFFECTS:
Repeated exposure to acetaldehyde causes dermatitis.
INGESTION EFFECTS:
Acetaldehyde: LD50 (rat): 661 mg/kg.
INHALATION EFFECTS:
Acetaldehyde: TCLO (human): 134 ppm/30M, LC50 (rat): 37 gm/m3/30M
Acetaldehyde vapor irritation of eye is detectable at 50 ppm in air and becomes excessive for chronic exposure
above 200 ppm. Higher concentration and extended exposure may injure the corneal epithelium, causing
persistent lacrimation, photophobia and foreign body sensation.
Chronic intoxication resembles that of chronic alcoholism.
Acetaldehyde is listed by the International Agency for Research on Cancer (IARC) as a Group 2B agent
(possible carcinogen) - limited evidence exists in humans and sufficient evidence exists in experimental animals
with regard to carcinogenicity.
TERATOGENICITY (BIRTH DEFECTS):
Overexposure to acetaldehyde may cause abnormalities in embryonic development. Acetaldehyde induces
chromosomal aberation in a variety of test systems.
REPRODUCTIVE EFFECTS:
Overexposure to acetylene may cause difficulties in pregnancy. Oxygen deficiency during pregnancy has
produced developmental abnormalities in humans and experimental animals.
12. Ecological Information
No known effects.
13. Disposal Considerations
RCRA INFORMATION:
Listed as a RCRA hazardous waste U001 (40 CFR 261.33).
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-28
Revised: 6/7/96 Page 6 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
14. Transport Information
PARAMETER United States DOT Canada TDG
Compressed gases, n.o.s. Compressed gases, n.o.s
PROPER SHIPPING NAME:
(Acetaldehyde in Nitrogen) (Acetaldehyde in Nitrogen)
2.2 2.2
HAZARD CLASS:
UN 1956 UN 1956
IDENTIFICATION NUMBER:
NONFLAMMABLE GAS NONFLAMMABLE GAS
SHIPPING LABEL:
15. Regulatory Information
Acetaldehyde 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 acetaldehyde in quantities equal to or greater than the reportable quantity (RQ) of 1,000 pounds are
subject to reporting to the National Response Center under CERCLA, Section 304 SARA Title III.
SARA TITLE III - HAZARD CLASSES:
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
75-07-0 Acetaldehyde < 2.0
This information must be included on all MSDSs that are copied and distributed for this material.
REGULATED INGREDIENTS:
INGREDIENT: Acetaldehyde
CAS NUMBER: 75-07-0 PERCENT BY VOLUME: < 2.0
Regulations: Illinois Toxic Substance
Massachusetts Hazardous Substance
New Jersey Environmental Hazardous Substance
New Jersey Special Health Hazardous Substance
New Jersey Workplace Hazardous Substance
Listed On The National Toxicology Program (NTP)
Pennsylvania Environmental Hazardous Substance
Pennsylvania Workplace Hazardous Substance
California Proposition 65
RCRA Hazardous Waste
SARA Section 313 Toxic Chemical
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
MSDS: G-28
Revised: 6/7/96 Page 7 of 8
PRODUCT NAME: NITROGEN (ACETALDEHYDE 1 ppm to 2%)
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-28
Revised: 6/7/96 Page 8 of 8
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