Common Name: 4-Dimethylaminoazobenzene
CAS Number: 60-11-7
DOT Number: None
Date: October 30, 1986
-----------------------------------------
HAZARD SUMMARY
* 4-Dimethylaminoazobenzene can affect you when breathed in and
by passing through your skin.
* 4-Dimethylaminoazobenzene is a CARCINOGEN HANDLE WITH EXTREME
CAUTION.
* This chemical may damage the developing fetus.
* Exposure may irritate the skin. Repeated exposure can cause a
skin rash.
IDENTIFICATION
4-Dimethylaminoazobenzene is a yellow, crystal (sand or sugar like)
solid. It may also exist in a solution. It is used in chemical
analysis.
REASON FOR CITATION
* 4-Dimethylaminoazobenzene is on the RTK Hazardous Substance
List because it is regulated by OSHA and cited by NTP and CAG.
* This chemical is also on the Special Health Hazard Substance
List because it is a CANCER CAUSING AGENT and a MUTAGEN.
* 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
* No exposure limits have been set. A full OSHA standard,
1910.1015, has been established for this substance.
* 4-Dimethylaminoazobenzene is a PROBABLE CANCER CAUSING AGENT
in humans. There may be no safe level of exposure to a
carcinogen, so all contact should be reduced to the lowest
possible level.
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.
* Establish a regulated area where 4-Dimethylaminoazobenzene is
manufactured, used or stored as required in the OSHA standard
1910.1015.
* Wear protective work clothing.
* Wash thoroughly immediately after exposure to 4-
Dimethylaminoazobenzene and on each exit from a regulated
area.
* 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 4-Dimethylaminoazobenzene 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 4-Dimethylaminoazobenzene:
* The solid or solutions of this chemical may irritate the skin,
causing a rash or burning feeling on contact.
Chronic Health Effects
The following chronic (long term) health effects can occur at some
time after exposure to 4-Dimethylaminoazobenzene and can last for
months or years:
Cancer Hazard
* 4-Dimethylaminoazobenzene is a PROBABLE CANCER CAUSING AGENT
in humans. It has been shown to cause liver, bladder, lung,
and skin cancer in animals.
* Many scientists believe there is no safe level of exposure to
a cancer causing agent. Such substances may also have the
potential for causing reproductive damage in humans.
Reproductive Hazard
* 4-Dimethylaminoazobenzene may damage the developing fetus.
Other Long Term Effects
* Repeated exposure may cause a skin rash.
MEDICAL
Medical Testing
There is no special test for this chemical. However, if illness
occurs or over exposure is suspected, medical attention is
recommended.
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.
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:
* Establish a regulated area where 4-Dimethylaminoazobenzene is
manufactured, used, or stored.
* Where possible, automatically pump liquid 4-
Dimethylaminoazobenzene from containers to process containers.
* Specific engineering controls are required for this chemical
by OSHA. Refer to the OSHA standard 1910.1015 on 4-
Dimethylaminoazobenzene.
Good WORK PRACTICES can help to reduce hazardous exposures. The
following work practices are recommended:
* Workers whose clothing has been contaminated by 4-
Dimethylaminoazobenzene 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 4-
Dimethylaminoazobenzene.
* On skin contact with 4-Dimethylaminoazobenzene, immediately
wash or shower to remove the chemical.
* Wash any areas of the body that may have contacted 4-
Dimethylaminoazobenzene at the end of each workday, whether or
not known skin contact has occurred.
* Do not eat, smoke, or drink where 4-Dimethylaminoazobenzene is
handled, processed, or stored, since the chemical can be
swallowed. Wash hands carefully before eating or smoking.
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 4-Dimethylaminoazobenzene. Wear
protective gloves and clothing. Safety equipment
suppliers/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 with 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.
* 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
operated in the continuous flow mode. An MSHA/NIOSH approved
self contained breathing apparatus with a full facepiece
operated in pressure demand or other positive pressure mode is
also recommended.
Common Name:4-Dimethylaminoazobenzene
DOT Number: None
DOT Emergency Guide code: No Citation
CAS Number: 60-11-7
----------------------------------------
NJ DOH Hazard rating
FLAMMABILITY Not Found
REACTIVITY Not Found
----------------------------------------
CANCER CAUSING AGENT
DOES NOT BURN
----------------------------------------
Hazard Rating Key: 0=minimal; 1=slight; 2=moderate; 3=serious;
4=severe
FIRE HAZARDS
* 4-Dimethylaminoazobenzene is a non combustible solid.
* Extinguish fire using an agent suitable for type of
surrounding fire. 4-Dimethylaminoazobenzene itself does not
burn.
* If employees are expected to fight fires, they must be trained
and equipped as stated in OSHA 1910.156.
SPILLS AND EMERGENCIES
If 4-Dimethylaminoazobenzene is spilled, take the following steps:
* Restrict persons not wearing protective equipment from area of
spill or leak until cleanup is complete.
* Ventilate the area of spill or leak.
* Collect spilled material in the most convenient and safe
manner and deposit in sealed containers for reclamation or for
disposal in an approved facility. Liquid containing 4-
Dimethylaminoazobenzene should be absorbed in vermiculite, dry
sand, earth or a similar material.
* It may be necessary to contain and dispose of 4-
Dimethylaminoazobenzene as a HAZARDOUS WASTE. Contact your
Environmental Program for specific recommendations.
==========================================
FOR LARGE SPILLS AND FIRES immediately call your fire department.
==========================================
HANDLING AND STORAGE
* Prior to working with 4-Dimethylaminoazobenzene you should be
trained on its proper handling and storage.
* 4-Dimethylaminoazobenzene must be used, handled, and stored in
compliance to the OSHA standard 1910.1015.
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.
PHYSICAL DATA
Water Solubility: Insoluble
OTHER COMMONLY USED NAMES
Chemical Name:
Benzeneamine, N,N Dimethyl 4-(Phenylazo)
Other Names and Formulations:
Butter yellow; Methyl yellow; DAB.
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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
------------------------------------------
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ECOLOGICAL INFORMATION
4-Dimethylaminoazobenzene is a yellow, crystalline solid used for
the determination of free hydrochloric acid in gastric juice, in
spot test identification of peroxidized fats, and as an indicator
of pH. It may enter the environment from industrial or municipal
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.
4-Dimethylaminoazobenzene has moderate acute toxicity to aquatic
life. Insufficient data are available to evaluate or predict the
short-term effects of 4-Dimethylaminoazobenzene 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.
4-Dimethylaminoazobenzene has moderate chronic toxicity to aquatic
life. Insufficient data are available to evaluate or predict the
long-term effects of 4-Dimethylaminoazobenzene to plants, birds, or
land animals.
WATER SOLUBILITY
4-Dimethylaminoazobenzene 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
4-Dimethylaminoazobenzene is moderately persistent in water, with
a half-life of between 20 to 200 days. The half-life of a
pollutant is the amount of time it takes for one-half of the
chemical to be degraded. About 37% of this chemical will
eventually end up in water; about 32.5% will end up in terrestrial
soils; about 30.3% will end up in aquatic sediments; and the rest
will end up in the air.
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 4-Dimethylaminoazobenzene found in fish
tissues is expected to be somewhat higher than the average
concentration of 4-Dimethylaminoazobenzene in the water from which
the fish was taken.
SUPPORT DOCUMENT: AQUIRE Database, ERL-Duluth, U.S. EPA.
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