Common Name: 2-Naphthylamine
CAS Number: 91-59-8
DOT Number: UN 1650
Date: January 1989
-----------------------------------------
HAZARD SUMMARY
* 2-Naphthylamine can affect you when breathed in and by passing
through your skin.
* 2-Naphthylamine is a CARCINOGEN HANDLE WITH EXTREME CAUTION.
* High exposure can cause the skin and lips to turn blue. This
reduces the ability of the blood cells to carry oxygen to the
body organs (methemoglobinemia).
* Some related chemicals can damage the liver and/or cause skin
allergy. It is not known whether 2-Naphthylamine also has
these effects.
IDENTIFICATION
2-Naphthylamine is a white to reddish shiny solid in the form of
flakes. It is used in making dyes, but because of its ability to
cause cancer its use is restricted or prohibited.
REASON FOR CITATION
* 2-Naphthylamine is on the Hazardous Substance List because it
is regulated by OSHA and cited by ACGIH, DOT, IARC, NTP, CAG
and EPA.
* This chemical is on the Special Health Hazard Substance List
because it is a CARCINOGEN.
* Definitions are attached.
HOW TO DETERMINE IF YOU ARE BEING EXPOSED
* Exposure to hazardous substances should be routinely
evaluated. This may include collecting personal and area air
samples. You can obtain copies of sampling results from your
employer. You have a legal right to this information under
OSHA 1910.20.
* If you think you are experiencing any work related health
problems, see a doctor trained to recognize occupational
diseases. Take this Fact Sheet with you.
WORKPLACE EXPOSURE LIMITS
OSHA: An exposure limit has not been established. Refer to the
OSHA Standard 29 CFR 1910.1009.
ACGIH: An exposure limit has not been recommended for this
confirmed human carcinogen.
* 2-Naphthylamine is a CARCINOGEN in humans. There may be no
safe level of exposure to a carcinogen, so all contact should
be reduced to the lowest possible level.
* It should be recognized that 2-Naphthylamine can be absorbed
through your skin, thereby increasing your expo sure.
WAYS OF REDUCING EXPOSURE
* Where possible, enclose operations and use local exhaust
ventilation at the site of chemical release. If local exhaust
ventilation or enclosure is not used, respirators should be
worn.
* A regulated, marked area should be established where 2-
Naphthylamine is handled, used, or stored.
* Wear protective work clothing.
* Wash thoroughly immediately after exposure to 2-Naphthylamine
and at the end of the workshift.
* Post hazard and warning information in the work area. In
addition, as part of an ongoing education and training effort,
communicate all information on the health and safety hazards
of 2-Naphthylamine to potentially exposed workers.
This Fact Sheet is a summary source of information of all potential
and most severe health hazards that may result from exposure.
Duration of exposure, concentration of the substance and other
factors will affect your susceptibility to any of the potential
effects described below.
------------------------------------------
HEALTH HAZARD INFORMATION
Acute Health Effects
The following acute (short term) health effects may occur
immediately or shortly after exposure to 2- Naphthylamine:
* High exposures can cause the lips and skin to turn blue, (a
condition called methemoglobinemia). This causes less oxygen
to be carried by the blood cells to body organs.
* 2- Naphthylamine may pass through the skin without a sense of
irritation or other warning.
Chronic Health Effects
The following chronic (long term) health effects can occur at some
time after exposure to 2- Naphthylamine and can last for months or
years:
Cancer Hazard
* 2- Naphthylamine is a CARCINOGEN in humans. It has been shown
to cause bladder cancer.
* Many scientists believe there is no safe level of exposure to
a carcinogen. Such substances may also have the potential for
causing reproductive damage in humans.
Reproductive Hazard
* According to the information presently available to the New
Jersey Department of Health, 2- Naphthylamine has not been
tested for its ability to adversely affect reproduction.
Other Long Term Effects
* Related chemicals (other "aromatic amines") can cause liver
damage and/or skin allergy. If allergy develops, even very low
future exposure could trigger symptoms of rash and itching. It
is not known whether 2- Naphthylamine has these effects.
MEDICAL
Medical Testing
Before beginning employment and at regular times after that, the
following are recommended:
* Urine cytology (a test for abnormal cells in the urine).
* A urine test for 2- Naphthylamine can be done to determine
whether this cancer agent is entering the body. For accuracy,
it should be done shortly after exposure.
If symptoms develop or overexposure is suspected, the following may
be useful:
* Test for methemoglobin (most accurate a few hours after
exposure; the blood sample must also be promptly tested).
Any evaluation should include a careful history of past and present
symptoms with an exam. Medical tests that look for damage already
done are not a substitute for controlling exposure.
Request copies of your medical testing. You have a legal right to
this information under OSHA 1910.20.
WORKPLACE CONTROLS AND PRACTICES
Unless a less toxic chemical can be substituted for a hazardous
substance, ENGINEERING CONTROLS are the most effective way of
reducing exposure. The best protection is to enclose operations
and/or provide local exhaust ventilation at the site of chemical
release. Isolating operations can also reduce exposure. Using
respirators or protective equipment is less effective than the
controls mentioned above, but is sometimes necessary.
In evaluating the controls present in your workplace, consider: (1)
how hazardous the substance is, (2) how much of the substance is
released into the workplace and (3) whether harmful skin or eye
contact could occur. Special controls should be in place for highly
toxic chemicals or when significant skin, eye, or breathing
exposures are possible.
In addition, the following controls are recommended:
* Where possible, automatically transfer 2- Naphthylamine from
drums or other storage containers to process containers.
* Specific engineering controls are required for this chemical
by OSHA. Refer to the OSHA Standard: Title 29, Code of Federal
Regulations 1910.1009.
Good WORK PRACTICES can help to reduce hazardous exposures. The
following work practices are recommended:
* Workers whose clothing has been contaminated by 2-
Naphthylamine should change into clean clothing promptly.
* Do not take contaminated work clothes home. Family members
could be exposed.
* Contaminated work clothes should be laundered by individuals
who have been informed of the hazards of exposure to 2-
Naphthylamine.
* If there is the possibility of skin exposure, emergency shower
facilities should be provided.
* On skin contact with 2- Naphthylamine, immediately wash or
shower to remove the chemical. At the end of the work shift,
wash any areas of the body that may have contacted 2-
Naphthylamine, whether or not known skin contact has occurred.
* Do not eat, smoke, or drink where 2- Naphthylamine is handled,
processed, or stored, since the chemical can be swallowed.
Wash hands carefully before eating or smoking.
* Use a vacuum or a wet method to reduce dust during clean up.
DO NOT DRY SWEEP.
* When vacuuming, a high efficiency particulate absolute (HEPA)
filter should be used, not a standard shop vacuum.
PERSONAL PROTECTIVE EQUIPMENT
WORKPLACE CONTROLS ARE BETTER THAN PERSONAL PROTECTIVE EQUIPMENT.
However, for some jobs (such as outside work, confined space entry,
jobs done only once in a while, or jobs done while workplace
controls are being installed), personal protective equipment may be
appropriate.
The following recommendations are only guidelines and may not apply
to every situation.
Clothing
* Avoid skin contact with 2- Naphthylamine. Wear protective
gloves and clothing. Safety equipment sup
pliers/manufacturers can provide recommendations on the most
protective glove/clothing material for your operation.
* All protective clothing (suits, gloves, footwear, headgear)
should be clean, available each day, and put on before work.
Eye Protection
* Eye protection is included in the recommended respiratory
protection.
Respiratory Protection
IMPROPER USE OF RESPIRATORS IS DANGEROUS. Such equipment should
only be used if the employer has a written program that takes into
account workplace conditions, requirements for worker training,
respirator fit testing and medical exams, as described in OSHA
1910.134.
* Engineering controls must be effective to ensure that exposure
to 2- Naphthylamine does not occur.
* At any exposure level, use a MSHA/NIOSH approved supplied air
respirator with a full facepiece operated in the positive
pressure mode or with a full facepiece, hood, or helmet in the
continuous flow mode, or use a MSHA/NIOSH approved self
contained breathing apparatus with a full facepiece operated
in pressure demand or other positive pressure mode.
Common Name: 2- Naphthylamine
DOT Number: UN 1650
DOT Emergency Guide code: 55
CAS Number: 91-59-8
----------------------------------------
Hazard rating NJDOH NFPA
FLAMMABILITY Not Found Not Rated
REACTIVITY Not Found Not Rated
----------------------------------------
CARCINOGEN
POISONOUS GASES ARE PRODUCED IN FIRE
CONTAINERS MAY EXPLODE IN FIRE
----------------------------------------
Hazard Rating Key: 0=minimal; 1=slight; 2=moderate; 3=serious;
4=severe
FIRE HAZARDS
* 2- Naphthylamine is a COMBUSTIBLE SOLID.
* Use dry chemical, CO2, water spray, or foam extinguishers.
* CONTAINERS MAY EXPLODE IN FIRE.
* POISONOUS GASES ARE PRODUCED IN FIRE, including Oxides of
Nitrogen.
* If employees are expected to fight fires, they must be trained
and equipped as stated in OSHA 1910.156.
SPILLS AND EMERGENCIES
If 2- Naphthylamine is spilled take the following steps:
* Restrict persons not wearing protective equipment from area of
spill until cleanup is complete.
* Remove all ignition sources.
* Collect powdered material in the most convenient and safe
manner and deposit in sealed containers.
* It may be necessary to contain and dispose of 2-
Naphthylamine as a HAZARDOUS WASTE. Contact your state
Environmental Program for specific recommendations.
==========================================
FOR LARGE SPILLS AND FIRES immediately call your fire department.
==========================================
HANDLING AND STORAGE
* Prior to working with 2- Naphthylamine you should be trained
on its proper handling and storage.
* A regulated, marked area should be established where 2-
Naphthylamine is handled, used, or stored.
* Store in tightly closed containers in a cool, well ventilated
area away from HEAT and LIGHT.
* Handle 2- Naphthylamine only in closed systems.
FIRST AID
POISON INFORMATION
Eye Contact
* Immediately flush with large amounts of water for at least 15
minutes, occasionally lifting upper and lower lids. Skin
Contact
* Quickly remove contaminated clothing. Immediately wash area
with large amounts of soap and water. Seek medical attention.
Breathing
* Remove the person from exposure.
* Begin rescue breathing if breathing has stopped and CPR if
heart action has stopped.
* Transfer promptly to a medical facility.
PHYSICAL DATA
Vapor Pressure: 1 mmhg at 266oF (108.Oc)
Water Solubility: Soluble in hot water.
OTHER COMMONLY USED NAMES
Chemical Name:
2- Naphthalenamine
Other Names and Formulations:
BNA; 2- Aminonaphthalene; Fast Scarlet Base B; NA; Beta
Naphthylamine.
------------------------------------------
Not intended to be copied and sold for commercial purposes.
------------------------------------------
NEW JERSEY DEPARTMENT OF HEALTH
Right to Know Program
CN 368, Trenton, NJ 08625 0368
------------------------------------------
------------------------------------------
ECOLOGICAL INFORMATION
2-Naphthylamine is a white to reddish crystalline solid, used to
make dyes. It may enter the environment from industrial discharges
or spills.
ACUTE (SHORT-TERM) ECOLOGICAL EFFECTS
Acute toxic effects may include the death of animals, birds, or
fish, and death or low growth rate in plants. Acute effects are
seen two to four days after animals or plants come in contact with
a toxic chemical substance.
2-Naphthylamine has moderate acute toxicity to aquatic life.
Insufficient data are available to evaluate or predict the short-
term effects of 2-Naphthylamine to plants, birds, or land animals.
CHRONIC (LONG-TERM) ECOLOGICAL EFFECTS
Chronic toxic effects may include shortened lifespan, reproductive
problems, lower fertility, and changes in appearance or behavior.
Chronic effects can be seen long after first exposure(s) to a toxic
chemical.
2-Naphthylamine has moderate chronic toxicity to aquatic life.
Insufficient data are available to evaluate or predict the long-
term effects of 2-Naphthylamine to plants, birds, or land animals.
WATER SOLUBILITY
2-Naphthylamine is moderately soluble in water. Concentrations of
between 1 to 1,000 milligrams will mix with a liter of water.
DISTRIBUTION AND PERSISTENCE IN THE ENVIRONMENT
2-Naphthylamine is slightly persistent in water, with a half-life
of between 2 to 20 days. The half-life of a pollutant is the
amount of time it takes for one-half of the chemical to be
degraded. About 91.4% of 2-Naphthylamine will eventually end up in
water; about 6.9% will end up in air; about 0.9% will end up in
terrestrial soil; the rest will end up in aquatic sediments.
BIOACCUMULATION IN AQUATIC ORGANISMS
Some substances increase in concentration, or bioaccumulate, in
living organisms as they breathe contaminated air, drink
contaminated water, or eat contaminated food. These chemicals can
become concentrated in the tissues and internal organs of animals
and humans.
The concentration of 2-Naphthylamine found in fish tissues is
expected to be somewhat higher than the average concentration of 2-
Naphthylamine in the water from which the fish was taken.
SUPPORT DOCUMENT: AQUIRE Database, ERL-Duluth, U.S. EPA.
....................................................................
[an error occurred while processing this directive]
|
![[ NDCRT ]](/pix/ndcrt.gif){kind=small}
About NDCRT
