The MSDS format adheres to the standards and regulatory requirements
of the United States and may not meet regulatory requirements
in other countries.
DuPont Page 1
Material Safety Data Sheet
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"DuPont" "BREAKFREE" ATZ HERBICIDE
M0000665 Revised 14-NOV-2006
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CHEMICAL PRODUCT/COMPANY IDENTIFICATION
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Material Identification
"DuPont", "BREAKFREE" are trademarks of DuPont.
Tradenames and Synonyms
DPX-QDN33
ACETOCHLOR
ATRAZINE
Company Identification
MANUFACTURER/DISTRIBUTOR
DuPont
1007 Market Street
WILMINGTON, DE 19898
PHONE NUMBERS
Product Information : 1-(800)441-7515
Transport Emergency : CHEMTREC: 1-800-424-9300
Medical Emergency : 1-(800)441-3637 (outside of U.S.
302-774-1000)
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COMPOSITION/INFORMATION ON INGREDIENTS
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Components
Material CAS Number %
ACETOCHLOR 34256-82-1 32.6
*ATRAZINE 1912-24-9 24.4
2-Chloro-2鈥檓ethyl-6鈥?-ethyl-N-
ethoxymethylacetanilide
[2-chloro-4-(ethylamino)-6-(isopropylamino)-s-
triazine] and related triazines
INERT INGREDIENTS INCLUDING: 43
PROPYLENE GLYCOL 57-55-6
DICHLORMID 37764-25-3
* Disclosure as a toxic chemical is required under Section 313 of
Title III of the Superfund Amendments and Reauthorization Act of 1986
and 40 CFR part 372.
M0000665 DuPont Page 2
Material Safety Data Sheet
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HAZARDS IDENTIFICATION
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Emergency Overview
WARNING. Causes substantial but temporary eye injury.
Harmful If Swallowed. Do not get in eyes or on clothing.
Avoid contact with skin. Prolonged or frequently repeated
skin contact may cause allergic reactions in some
individuals.
Potential Health Effects
Based on components, skin contact with Breakfree ATZ may cause
skin irritation with discomfort or rash. Atrazine has been
infrequently associated with skin sensitization in humans.
Based on components, eye contact with Breakfree ATZ may cause eye
irritation with discomfort, tearing, or blurring of vision.
Ingestion of large amounts may cause irritation of the mouth and
stomach with nonspecific discomfort, such as nausea, or weakness;
or gastrointestinal irritation abdominal pain, nausea, vomiting,
and diarrhea.
Carcinogenicity Information
None of the components present in this material at concentrations
equal to or greater than 0.1% are listed by IARC, NTP, OSHA or ACGIH
as a carcinogen.
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FIRST AID MEASURES
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First Aid
IF SWALLOWED: Call a poison control center or doctor
immediately for treatment advice. Do not induce vomiting
unless told to do so by a poison control center or
doctor. Do not give anything by mouth to an unconscious
person.
IF IN EYES: Hold eye open and rinse slowly and gently with
water for 15-20 minutes. Remove contact lenses, if present,
after the first 5 minutes, then continue rinsing eye. Call
a poison control center or doctor for treatment advice.
IF ON SKIN OR CLOTHING: Take off contaminated clothing.
Rinse skin immediately with plenty of water for 15-20
minutes. Call a poison control center or doctor for
treatment advice.
IF INHALED: Move person to fresh air. If person is not
breathing, call 911 or an ambulance, then give artificial
respiration, preferably mouth-to-mouth if possible.
M0000665 DuPont Page 3
Material Safety Data Sheet
(FIRST AID MEASURES - Continued)
Call a poison control center or doctor for further
treatment advice.
Have the product container or label with you when calling a
poison control center or doctor, or going for treatment. You
may also contact 1-800-441-3637 for emergency medical
treatment information.
Notes to Physicians
Probable mucosal damage may contraindicate the use of
gastric lavage.
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FIRE FIGHTING MEASURES
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Flammable Properties
Flash Point (Test Method): > 212掳F (>100掳C)
Method Use: TCC
UNUSUAL FIRE, EXPLOSION AND REACTIVITY HAZARDS:
If heated above the flashpoint, vapors can flow along
surfaces to distant ignition sources and flash back.
Extinguishing Media
Water Fog, "Alcohol" Foam, CO2, Dry Chemical.
Fire Fighting Instructions
Wear self-contained breathing apparatus (SCBA) and full protective
equipment.
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ACCIDENTAL RELEASE MEASURES
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Safeguards (Personnel)
NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL)
sections before proceeding with clean-up. Use appropriate
PERSONAL PROTECTIVE EQUIPMENT during clean-up.
Spill Clean Up
Soak up with sawdust, sand, oil dry or other absorbent material.
Dispose of in an approved container.
M0000665 DuPont Page 4
Material Safety Data Sheet
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HANDLING AND STORAGE
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Handling (Personnel)
Do not store or consume food, drink or tobacco in areas where they
may become contaminated with this material.
USERS SHOULD: Wash hands before eating, drinking,
chewing gum, using tobacco or using the toilet. Remove
clothing immediately if pesticide gets inside. Then wash
thoroughly and put on clean clothing. Remove PPE
immediately after handling this product. Wash the outside
of gloves before removing. As soon as possible, wash
thoroughly and change into clean clothing.
Handling (Physical Aspects)
Do not use or store near heat or open flame.
Storage
Do not contaminate water, food or feed by storage.
Keep container tightly closed when not in use. Do not
store near seeds, fertilizer, or feedstuffs. Can be
stored at temperatures as low as -30掳F.
Keep out of reach of children.
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EXPOSURE CONTROLS/PERSONAL PROTECTION
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Engineering Controls
When handlers use closed systems or enclosed cabs in a
manner that meets the requirements listed in the Worker
Protection Standard (WPS) for agricultural pesticides
[40 CFR 170.240(d)(5)], the handler PPE requirements may
be reduced or modified as specified in the WPS.
Personal Protective Equipment
Some of the materials that are chemical-resistant to this
product are listed below. If you want more options, follow
the instructions for Category A on an EPA chemical-
resistance category selection chart.
Mixers, loaders, applicators and other handlers must
wear:
- Coveralls over long-sleeved shirt and long pants.
- Chemical-resistant gloves made of any waterproof
material such as polyethylene or polyvinylchloride.
- Chemical-resistant footwear plus socks.
- Protective eyewear.
- Chemical-resistant headgear for overhead exposure.
M0000665 DuPont Page 5
Material Safety Data Sheet
(EXPOSURE CONTROLS/PERSONAL PROTECTION - Continued)
- Chemical-resistant apron when mixing/loading,
cleaning up spills, or cleaning equipment, or
otherwise exposed to the concentrate.
Discard clothing and other absorbent materials that have
been drenched or heavily contaminated with this product鈥檚
concentrate. Do not reuse them. Follow manufacturer鈥檚
instructions for cleaning/maintaining PPE. If no such
instructions for washables, use detergent and hot water.
Keep and wash PPE separately from other laundry.
PPE required for early entry to treated areas that is
permitted under the Worker Protection Standard and
that involves contact with anything that has been
treated, such as plants, soil, or water, is:
- Coveralls.
- Chemical-resistant gloves made of any waterproof
material such as polyethylene or polyvinyl chloride.
- Shoes plus socks.
- Protective eyewear.
Exposure Guidelines
Applicable Exposure Limits
ATRAZINE
PEL (OSHA) : None Established
TLV (ACGIH) : 5 mg/m3, 8 Hr. TWA, A4
AEL * (DuPont) : 0.5 mg/m3, 8 & 12 Hr. TWA, total dust
PROPYLENE GLYCOL
PEL (OSHA) : None Established
TLV (ACGIH) : None Established
AEL * (DuPont) : None Established
WEEL (AIHA) : 50 ppm, total; 10 mg/m3, aerosol only
(8 hr TWA)
* AEL is DuPont鈥檚 Acceptable Exposure Limit. Where governmentally
imposed occupational exposure limits which are lower than the AEL
are in effect, such limits shall take precedence.
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PHYSICAL AND CHEMICAL PROPERTIES
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Physical Data
Appearance: Tan colored opaque liquid
Odor: Faint Aromatic
Boiling Point: Not determined
Specific Gravity: 1.114 g/mL
Density @68掳F (20掳C): 9.28 lbs/gal*
pH: Not determined
Solubility in water: Not determined
*Varies with temperature
M0000665 DuPont Page 6
Material Safety Data Sheet
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STABILITY AND REACTIVITY
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Chemical Stability
Stable at normal conditions.
Incompatibility with Other Materials
Incompatability: Oxidizing agents
Decomposition
Hazardous Decomposition Products: If product is involved
in a fire, carbon dioxide, carbon monoxide, hydrogen
chloride, nitrogen dioxide, and sulfur dioxide may be
formed.
Polymerization
Polymerization will not occur.
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TOXICOLOGICAL INFORMATION
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Animal Data
Breakfree ATZ
Oral LD50: > 5000 mg/kg in male rats
Oral LD50: 2242 mg/kg in female rats
Skin Absorption LD50: > 5000 mg/kg in rats
Inhalation 4 hour LC50: > 6.23 mg/L in rats
ATRAZINE
Effects in animals from single inhalation exposure to an 80%
wettable powder produced no observed signs of toxicity.
Toxicity described in animals from the administration of single
oral doses include central nervous system effects, hypoactivity
and frequent urination. In a 90-day feeding study in rats,
repeated oral dosing of 0.6 to 34 mg/kg bw/day resulted in
decreased body, liver and kidney weight in high dose males. Iron
pigments were found in the spleen of male and female rats at the
high dose level. Long term (2-year) dietary studies in rats
resulted in decreased body weight, decrease in red cell parameters
(female rats only), and changes in clinical chemical parameters at
0.6 mg/kg bw/day and above. Cardiotoxicity was observed in a
long-term study with high doses in dogs.
M0000665 DuPont Page 7
Material Safety Data Sheet
(TOXICOLOGICAL INFORMATION - Continued)
Atrazine is a weak carcinogen in one female rat strain producing
an increased incidence of mammary tumors in a two year feeding
study at 3.5 mg/kg bw/day and above. There were no tumors at 1.5
mg/kg/day and below. Atrazine was negative for carcinogenicity in
mice and was also negative in a different rat strain. Based on
this unique tumor response in a single rat strain and a review of
multiple studies, EPA and IARC have concluded that atrazine is not
likely to be carcinogenic to humans. Tests in rats and rabbits
indicate that Atrazine may have developmental toxicity but only at
maternally toxic dose levels of 70 mg/kg/day and above. It is not
a unique hazard to the conceptus. Tests in animals demonstrate
no reproductive toxicity.
The weight of evidence from bacterial and mammalian cell cultures
and from animal tests indicate atrazine does not cause genetic
damage.
ACETOCHLOR
A 3-month feeding study in rats caused body weight loss and
decreased food consumption. The no-observable-effect-level was 40
mg/kg.
Acetochlor has produced tumors in some laboratory animals. Tests
in animals indicate developmental toxicity but only at maternally
toxic dose level. Reproduction toxicity was only observed with
maternal toxicity. Acetochlor is not mutagenic based on the
weight of evidence; it was negative in some tests and positive in
others.
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ECOLOGICAL INFORMATION
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Ecotoxicological Information
AQUATIC TOXICITY:
ACETOCHLOR
96 hour LC50 - Bluegill sunfish: 1.3 mg/L.
96 hour LC50 - Rainbow trout: 0.36 - 1.2 mg/L.
48 hour LC50 - Daphnia magna: 8.6 - 16 mg/L
AQUATIC TOXICITY:
Atrazine
96 hour LC50 - Rainbow trout: 4.5 ppm
LC50/EC50 - Trout: 9.9 ppm
LC50/EC50 - Bluegill: 54.5 ppm
LC50/EC50 - Daphnia: > 31 ppm
AVIAN TOXICITY
Atrazine
LC50 - Bobwhite Quail: > 5000 ppm
LC50 - Mallard Duck: > 5000 ppm
AVIAN TOXICITY
Acetochlor
M0000665 DuPont Page 8
Material Safety Data Sheet
(ECOLOGICAL INFORMATION - Continued)
Acute LD50 is 501 to 2000 mg/kg: Slightly toxic to birds
Dietary LC50 is > 5000 mg/kg: practically non-toxic
Atrazine
LC50/EC50 - Bees: > 100 ug/bee
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DISPOSAL CONSIDERATIONS
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Waste Disposal
Do not contaminate water, food, or feed by storage or
disposal. Open dumping is prohibited. Do not reuse empty
container.
Rinse spray equipment. Pesticide wastes are acutely
hazardous. Improper disposal of excess pesticide, spray
mixture, or rinsate is a violation of Federal law. If
these wastes cannot be disposed of by use according to label
instructions, contact your State Pesticide or Environmental
Control Agency or the Hazardous Waste Representative at the
nearest EPA Regional Office for guidance.
ENVIRONMENTAL HAZARDS:
This product is toxic to fish and aquatic invertebrates.
Do not apply directly to water, or to areas where surface
water is present or to intertidal areas below the mean high
water mark. Do not apply when weather conditions favor
drift from treated areas. Runoff and drift from treated
areas may be hazardous to aquatic organisms in neighboring
areas. Do not contaminate water when disposing of equipment
washwaters.
See product label for additional Environmental Precautions.
Container Disposal
Triple rinse (or equivalent); then offer for recycling or
reconditioning, or puncture and dispose of in a sanitary
landfill, or by incineration, or, if allowed by State and
local authorities, by burning. If burned, stay out of
smoke.
For Bulk and Mini-Bulk Container Disposal and Refilling:
Refer to the product label for instructions and additional
precautions.
Do not refill or transport damaged or leaking containers.
CONTAINER IS NOT SAFE FOR FOOD, FEED, OR DRINKING WATER!
M0000665 DuPont Page 9
Material Safety Data Sheet
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TRANSPORTATION INFORMATION
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Shipping Information
DOT:
Not regulated by DOT
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REGULATORY INFORMATION
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U.S. Federal Regulations
TITLE III HAZARD CLASSIFICATIONS SECTIONS 311, 312
Acute : Yes
Chronic : Yes
Fire : No
Reactivity : No
In the United States this product is regulated by the US
Environmental Protection Agency under the Federal Insecticide,
Fungicide and Rodenticide Act. It is a violation of federal law
to use this product in a manner inconsistent with its labeling.
EPA Reg. No. 352-724
State Regulations (U.S.)
CALIFORNIA PROP 65:
This product contains a chemical, Acetochlor, known to the
State of California to cause cancer.
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OTHER INFORMATION
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NFPA, NPCA-HMIS
NFPA Rating
Health :2
Flammability :1
Reactivity :0
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The data in this Material Safety Data Sheet relates only to the
specific material designated herein and does not relate to use in
combination with any other material or in any process.
Responsibility for MSDS: DuPont Crop Protection
Address : Wilmington, DE 19898
Telephone : 1-888-638-7668
This information is based upon technical information believed to be
reliable. It is subject to revision as additional knowledge and
experience is gained.
End of MSDS
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