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" "STAPLE" HERBICIDE
M0000353 Revised 16-APR-2008
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CHEMICAL PRODUCT/COMPANY IDENTIFICATION
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Material Identification
"STAPLE" is a registered trademark of DuPont.
"DuPont" is a trademark of DuPont.
Corporate MSDS Number : DU005749
# Tradenames and Synonyms
DPX-PE350
PYRITHIOBAC SODIUM
KIH-2031
Company Identification
MANUFACTURER/DISTRIBUTOR
DuPont
1007 Market Street
Wilmington, DE 19898
PHONE NUMBERS
Product Information : 1-800-441-7515 (outside the U.S.
302-774-1000)
Transport Emergency : CHEMTREC 1-800-424-9300(outside U.S.
703-527-3887)
Medical Emergency : 1-800-441-3637 (outside the U.S.
302-774-1000)
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COMPOSITION/INFORMATION ON INGREDIENTS
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Components
Material CAS Number %
PYRITHIOBAC-SODIUM 123343-16-8 85
(Sodium 2-chloro-6-[(4,6-dimethoxypyrimidin-=
2-yl)thio]benzoate)
INERT INGREDIENTS 15
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Material Safety Data Sheet
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HAZARDS IDENTIFICATION
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Emergency Overview
WARNING! Causes substantial but temporary eye injury. Do
not get in eyes or on clothing. Harmful if swallowed.
Harmful if absorbed through skin. Avoid contact with skin,
eyes or clothing.
Potential Health Effects
Based on animal testing skin contact with "Staple" Herbicide may
cause skin irritation with itching, redness, swelling or rash.
Based on animal testing eye contact with "Staple" Herbicide may
cause eye irritation with tearing, pain or blurred vision.
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 IN EYES: Hold open eye 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 SWALLOWED: Call a poison control center or doctor
immediately for treatment advice. Have person sip a glass
of water if able to swallow. 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 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: No specific intervention is indicated as the
compound is not likely to be hazardous by inhalation.
Consult a physician if necessary.
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 medical emergencies
involving this product.
M0000353 DuPont Page 3
Material Safety Data Sheet
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FIRE FIGHTING MEASURES
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Flammable Properties
Not a fire or explosion hazard.
Like most organic powders or crystals, under severe dusting
conditions, this material may form explosive mixtures in air.
Extinguishing Media
Water, Water Spray, Foam, Dry Chemical, CO2.
Fire Fighting Instructions
Wear self-contained breathing apparatus. Wear full protective
equipment. Runoff from fire control may be a pollution hazard.
Wear full protective equipment.
If area is exposed to fire and conditions permit, let fire burn
itself out. Burning chemicals may produce by-products more toxic
than the original material. If product is on fire, wear
self-contained breathing apparatus and full protective equipment.
Use water spray. Control runoff.
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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.
Emergency Response - Chemical resistant coveralls, waterproof
gloves, waterproof boots and face/eye protection. If dusting
occurs, use NIOSH approved respirator protection.
Initial Containment
Follow applicable Federal, State/Provincial and Local laws/
regulations. Prevent material from entering sewers, waterways, or
low areas.
Spill Clean Up
Shovel or sweep up.
M0000353 DuPont Page 4
Material Safety Data Sheet
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HANDLING AND STORAGE
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Handling (Personnel)
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.
Avoid breathing dust. Avoid contact with eyes, skin, or
clothing. Wash thoroughly after handling. Wash clothing
after use. Do not store or consume food, drink or tobacco
in areas where they may become contaminated with this
material.
Handling (Physical Aspects)
This is a water-dispersible product. It may be packaged in a
premeasured water-soluble packet which readily dissolves in water.
Exposure to moisture or excessive handling of the soluble packets
will cause them to break.
Storage
Store product in original container only. Do not contaminate
water, other pesticides, fertilizer, food or feed in storage. Do
not store or consume food, drink or tobacco in areas where they
may become contaminated with this material.
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EXPOSURE CONTROLS/PERSONAL PROTECTION
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Engineering Controls
Use only with adequate ventilation.
# Personal Protective Equipment
Always follow the label instructions when handling this
product.
Some 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.
Applicators and other handlers must wear:
- Long-sleeved shirt and long pants.
- Chemical resistant gloves made of any waterproof
material such as polyethylene or polyvinylchloride.
- Shoes plus socks.
- Protective eyewear.
Discard clothing or other absorbent materials that have been
drenched or heavily contaminated with this product鈥檚
M0000353 DuPont Page 5
Material Safety Data Sheet
(EXPOSURE CONTROLS/PERSONAL PROTECTION - Continued)
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.
- Shoes plus socks.
- Protective eyewear.
Exposure Guidelines
Applicable Exposure Limits
PYRITHIOBAC-SODIUM
AEL * (DuPont) : 5 mg/m3, 8 & 12 Hr. TWA, total dust
* 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
Melting Point : 234 C (453 F) (decomposition)
Solubility in Water : Soluble
pH : 5.6 (1% wt/wt in water)
Odor : Faint, ester
Form : Powder
Color : Yellowish-white
Density : 0.47 g/ml
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STABILITY AND REACTIVITY
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Chemical Stability
Stable at normal temperatures and storage conditions.
Incompatibility with Other Materials
None reasonably foreseeable.
Decomposition
Decomposition temperature: 234 C (453 F)
M0000353 DuPont Page 6
Material Safety Data Sheet
(STABILITY AND REACTIVITY - Continued)
Polymerization
Polymerization will not occur.
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TOXICOLOGICAL INFORMATION
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Animal Data
"Staple" Herbicide
Oral LD50: 4,000 mg/kg in rats
(slightly toxic)
Dermal LD50: > 2,000 mg/kg in rabbits
(moderately toxic)
Inhalation 4 hour LC50: > 5.6 mg/L in rats
(very low toxicity)
Animal testing indicates that "Staple" Herbicide is an eye
irritant, a mild or slight skin irritant, and not a skin
sensitizer.
PYRITHIOBAC-SODIUM
Repeated dermal exposure for 21 days to high doses of
Pyrithiobac-sodium caused irritation of the skin. Effects were
only detected at levels of 1,200 mg/kg.
Repeated and long-term ingestion of high doses of
Pyrithiobac-sodium caused altered clinical chemistry, anemia,
decreased body weight, and reduced weight gain. Effects were only
detected at or above levels of 200 mg/kg.
Long-term ingestion of high doses of Pyrithiobac-sodium by rats
caused histopathological changes of the kidneys, including tumors.
The No-Observed-Adverse-Effect-Level (NOAEL) was 59 mg/kg.
Some animal data suggest that Pyrithiobac-sodium is weakly
carcinogenic at high exposure levels. Effects were only detected
at or above levels of 200 mg/kg. Animal data show developmental
effects only at exposure levels producing other toxic effects in
the adult animal. In animal testing Pyrithiobac-sodium has not
caused reproductive toxicity. Pyrithiobac-sodium has not produced
genetic damage in bacterial cultures or in tests on animals.
There are reports indicating that Pyrithiobac-sodium produced
genetic damage in some mammalian cell culture tests; however, the
weight of evidence suggests that Pyrithiobac-sodium does not cause
genetic damage.
M0000353 DuPont Page 7
Material Safety Data Sheet
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ECOLOGICAL INFORMATION
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Ecotoxicological Information
AQUATIC TOXICITY:
48 hour EC50 - Daphnia magna: > 1,100 mg/L.
96 hour LC50 - Bluegill sunfish: > 930 mg/L.
96 hour LC50 - Rainbow trout: > 1,000 mg/L.
AVIAN TOXICITY:
LD50 - Bobwhite Quail: 1,599 mg/kg.
LC50 - Mallard Duck: > 5,620 ppm
PLEASE NOTE: The above AQUATIC and AVIAN TOXICITY data are
for PYRITHIOBAC SODIUM TECHNICAL.
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DISPOSAL CONSIDERATIONS
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# Waste Disposal
Do not contaminate water supply, food or feed by storage
or disposal. Treatment, storage, transportation, and
disposal must be in accordance with applicable Federal,
State/Provincial, and local regulations. Do not flush to
surface water or sanitary sewer system.
Wastes resulting from the use of this product may be
disposed of on site or at an approved waste disposal
facility.
ENVIRONMENTAL HAZARDS
This product is highly toxic to nontarget plants
adjacent to area of application. Do not apply this
product or allow it to drift to areas where endangered
or desired plant species exist.
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 contaminate water when
cleaning of equipment or disposing of equipment washwaters.
Container Disposal
Do not reuse the outer box or the resealable plastic bag.
When all water-soluble packets are used, the outer packaging
should be clean and may be disposed of in a sanitary
landfill or by incineration, or if allowed by state and
local authorities, by open burning. If burned, stay out of
smoke.
If the resealable plastic bag contacts the formulated
product in any way, the bag must be triple-rinsed with clean
water. Add the rinsate to the spray tank and dispose of the
outer wrap as described above.
M0000353 DuPont Page 8
Material Safety Data Sheet
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TRANSPORTATION INFORMATION
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Shipping Information
DOT/IMO
Proper Shipping Name : NOT REGULATED
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REGULATORY INFORMATION
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U.S. Federal Regulations
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. 352-576
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OTHER INFORMATION
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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, Delaware 19898
Telephone : 1-888-638-7668
# Indicates updated section.
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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