MATERIAL SAFETY DATA SHEET
Syngenta Crop Protection Canada, Inc. In Case of Emergency, Call
140 Research Lane, Research Park
1-800-327-8633 (FAST MED)
Guelph, ON N1G 4Z3
Supersedes date (Y/M/D): 04-09-21
Date of MSDS Preparation (Y/M/D): 2005-09-01
MSDS prepared by:
For further information contact:
Department of Regulatory & Biology Development
1-87-SYNGENTA (1-877-964-3682)
Syngenta Crop Protection Canada, Inc.
SECTION 鈥? 1: PRODUCT IDENTIFICATION
Product Identifier: REWARD庐 AQUATIC HERBICIDE Formulation No.: A12872A
Registration Number: 26271 (Pest Control Products Act)
Chemical Class: Bipyridilium (dipyridilium) contact herbicide.
Synonym: None
Active Ingredient (%): Diquat dibromide (37.3%) CAS No.: 85-00-7
Chemical Name : 6,7-dihydrodipyrido(1,2-a:2鈥?,1鈥?-c)pyrazinediium dibromide.
Product Use: For control of weeds in still or slow-moving water of farm dugouts, farm ponds, farm ditches,
lakes and canals, and for weed control in non-crop land and chemical mowing. Please refer to
product label for further details.
SECTION 鈥? 2 : COMPOSITION/INFORMATION ON INGREDIENTS
Material OSHA ACGIH Other NTP/IARC/OSHA WHMIS鈥?
PEL TLV Carcinogen
Not Established 0.5 mg/m鲁 TWA 0.5 mg/m鲁 TWA Not Established
Diquat dibromide No
(inhalable); (0.5 total; 0.08
(37.3%)
0.1 mg/m鲁 TWA respirable)***
(respirable), skin
*** Syngenta Occupational Exposure Limit (OEL)
鈥? Material listed in Ingredient Disclosure List under Hazardous Products Act.
Ingredients not precisely identified are proprietary or non-hazardous. Values are not product specifications.
Syngenta Hazard Category: B, S
SECTION 鈥? 3: HAZARDS IDENTIFICATION
Symptoms of Acute Exposure
May cause eye irritation. Harmful if inhaled, swallowed or absorbed through the skin.
Hazardous Decomposition Products
Flammable hydrogen gas may be formed on contact with aluminum. See "Conditions to Avoid", Section 10.
Can decompose at high temperatures forming toxic gases.
Physical Properties
Appearance: Dark Brown liquid.
Odour: Odourless.
Unusual Fire, Explosion and Reactivity Hazards
This product may form flammable and explosive hydrogen gas when in contact with aluminum. During a fire,
irritating and possibly toxic gases may be generated by thermal decomposition or combustion.
REWARD庐 AQUATIC HERBICIDE
PAGE 1 OF 7
Potential Health Effects
Irritation of the mouth, pharynx, esophagus and stomach can develop following ingestion. The degree of injury will
depend on the amount absorbed from the gut. Symptoms following ingestion of diquat concentrate may initially
include nausea, vomiting, abdominal pain and severe irritation of the mouth, throat and esophagus. These can be
followed by kidney failure and other internal organ involvement.
This substance is considered slightly toxic by inhalation. The degree of injury will depend on the airborne
concentration and duration of exposure. Diquat is a water-soluble salt which has no measurable vapour pressure.
Therefore, inhalation hazard from diquat vapour is minimal. If the concentrate is spilled and allowed to stand, it can
dry to a highly irritating dust. Symptoms of inhalation overexposure may include headache, nose bleed, sore throat
and coughing.
This material is classified as "slightly toxic" by dermal absorption. The degree of injury will depend on the amount
absorbed. Because diquat is an ionized compound, it has a slow rate of absorption through intact skin. Prolonged or
repeated contact may result in skin damage, thus allowing more of the chemical to be absorbed. This could result in
systemic poisoning as evidenced by injury to internal organs, primarily the kidneys. Short contact periods with
human skin are not usually associated with skin irritation; repeated and/or prolonged contact can result in skin
irritation. Repeated and/or prolonged contact may cause dermatitis.
This material may irritate human eyes following contact and could cause prolonged (weeks) impairment of vision.
The degree of injury will depend on the amount of material that gets into the eye and the speed and thoroughness of
the first aid treatment. Symptoms may include pain, tearing, swelling, redness, and blurred vision.
Relevant routes of exposure: Skin, eyes, mouth, lungs.
SECTION 鈥? 4: FIRST AID MEASURES
IF POISONING IS SUSPECTED, SPEED IS ESSENTIAL. Immediately contact the poison information centre, doctor
or nearest hospital. Have the product container, label or Material Safety Data Sheet with you when calling Syngenta, a
poison control center or doctor, or going for treatment. Tell the person contacted the complete product name, and the type
and amount of exposure. Describe any symptoms and follow the advice given. Call the Syngenta Emergency Line [1-800-
327-8633 (1-800-FASTMED)], for further information.
EYE CONTACT: Immediately flush eyes with clean water, holding eyelids apart for a minimum of 20 minutes.
Remove contact lenses, if present, after 5 minutes, then continue rinsing eye. Call Syngenta, a
poison control center or doctor for treatment advice. Obtain medical attention immediately if
irritation persists.
SKIN CONTACT: Immediately remove contaminated clothing and wash skin, hair and fingernails thoroughly with
soap and water. Flush skin with running water for a minimum of 20 minutes. Obtain medical
attention if irritation occurs.
INHALATION: Remove victim to fresh air. If not breathing, give artificial respiration, preferably mouth-to-mouth.
If breathing is laboured, give oxygen. Obtain immediate medical attention.
INGESTION: If swallowed, immediately contact Syngenta, a poison control centre, doctor or nearest hospital for
treatment advice. Provided the patient is conscious, wash out mouth with water. Do not give
anything by mouth to an unconscious person. Do not induce vomiting unless directed by a
physician or a poison control center. If spontaneous vomiting occurs, have victim lean forward
with head down to avoid breathing in of vomitus, rinse mouth and administer water.
NOTES TO PHYSICIAN:
To be effective, treatment for ingestion of the product must begin IMMEDIATELY. Treatment consists of binding the
active ingredient, diquat, in the gut with suspensions of activated charcoal or bentonite clay, administration of cathartics
to enhance elimination and removal of diquat from the blood by charcoal hemoperfusion or continuous hemodialysis.
MEDICAL CONDITIONS KNOWN TO BE AGGRAVATED: None known.
REWARD庐 AQUATIC HERBICIDE
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SECTION 鈥? 5: FIRE FIGHTING MEASURES
Flash point and method: Not applicable.
Upper and lower flammable (explosive) limits in air: Not applicable.
Auto-ignition temperature: Not applicable.
Flammability: Not flammable.
Hazardous combustion products: Carbon dioxide, carbon monoxide and, irritating and/or toxic gases, vapours or smoke.
Conditions under which flammability could occur: Keep fire exposed containers cool by spraying with water.
Extinguishing media: Use foam, carbon dioxide, dry powder or halon extinguishant. Wear full protective clothing and
self-contained breathing apparatus. Evacuate nonessential personnel from the area to prevent human exposure to fire,
smoke, fumes or products of combustion. Prevent use of contaminated buildings, area, and equipment until
decontaminated. Water runoff can cause environmental damage. Contain run-off water with, for example, temporary earth
barriers.
Sensitivity to explosion by mechanical impact: None known.
Sensitivity to explosion by static discharge: None known.
SECTION 鈥? 6: ACCIDENTAL RELEASE MEASURES
Personal Precautions: Make sure all personnel involved in the spill cleanup follow good industrial hygiene practices. A
small spill can be handled routinely. Wear suitable protective clothing and eye protection to prevent skin and eye contact.
Use adequate ventilation and wear an air-supplied respirator to prevent inhalation.
Procedures for dealing with release or spill: Control the spill at its source. Contain the spill to prevent from spreading or
contaminating soil or from entering sewage and drainage systems or any body of water. Clean up spills immediately,
observing precautions outlined in Sections 7 and 8. Pump or scoop large amounts of liquid into a disposable container.
Absorb remaining liquid or smaller spills with clay, sand or vermiculite. Scoop or sweep up material and place into a
disposal container. Wash area with detergent and water. Pick up wash liquid with additional absorbent and place into
compatible disposal container. On soils, skim off the upper contaminated layer and collect for disposal. Once all material is
cleaned up and placed in a disposal container, seal container and arrange for disposition. Spillages or uncontrolled
discharges into watercourses must be alerted to the appropriate regulatory body.
Deactivating Chemicals: Bentonite, Fuller's Earth, Activated Charcoal.
SECTION 鈥? 7: HANDLING AND STORAGE
Handling practices: This product reacts with aluminum to produce flammable hydrogen gas. Do not mix or store in
containers or systems made of aluminum or having aluminum fittings. KEEP OUT OF REACH OF CHILDREN and
animals. Prevent eating, drinking, tobacco use, and cosmetic application in areas where there is a potential for exposure to
the material. Avoid breathing vapours or spray mist. If the concentrate is spilled and allowed to stand, it can dry to a highly
irritating dust. Wear full protective clothing and equipment (see Section 8). After work, rinse gloves and remove protective
equipment, and wash hands thoroughly with soap and water after handling, and before eating, tobacco use, drinking, or
using the toilet. Wash contaminated clothing before re-use and separate from household laundry. Keep containers closed
when not in use. Keep product, wash or rinse water, and contaminated materials out of water, away from crops, and away
from access by people, animals and birds.
Appropriate storage practices/requirements: Store in original container only in a well-ventilated, cool, dry, secure area.
Protect from heat, sparks and flame. Do not expose sealed containers to temperatures above 40 掳C. Keep separate from
other products to prevent cross contamination. Rotate stock. Clean up spilled material immediately.
National Fire Code classification: Not required.
SECTION 鈥? 8: EXPOSURE CONTROLS/PERSONAL PROTECTION
Applicable control measures, including engineering controls: Ensure work areas have ventilation, containment, and
procedures sufficient to maintain airborne levels below the TLV. Warehouses, production area, parking lots and waste
holding facilities must have adequate containment to prevent environmental contamination. Provide separate shower and
eating facilities.
REWARD庐 AQUATIC HERBICIDE
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THE FOLLOWING RECOMMENDATIONS FOR EXPOSURE CONTROLS/PERSONAL PROTECTION ARE INTENDED
FOR THE MANUFACTURE, FORMULATION, PACKAGING AND USE OF THIS PRODUCT.
FOR COMMERCIAL APPLICATIONS AND/OR ON-FARM APPLICATIONS CONSULT THE PRODUCT LABEL.
Personal protective equipment for each exposure route:
General: Avoid breathing dust, vapours or aerosols. Avoid contact with eye, skin and clothing. Wash thoroughly after
handling and before eating, drinking, or handling tobacco.
INGESTION: Do not eat, drink, handle tobacco, or apply cosmetics in areas where there is a potential for exposure to
this material. Always wash thoroughly after handling.
EYES: Where eye contact is likely, use chemical splash goggles. Facilities storing or utilizing this material
should be equipped with an eyewash facility and a safety shower.
SKIN: Where contact is likely, wear chemical-resistant gloves (such as nitrile or butyl), coveralls, socks and
chemical-resistant footwear. For overhead exposure, wear chemical-resistant headgear.
INHALATION: A respirator is not normally required when handling this substance. Use process enclosures, local
exhaust ventilation, or other engineering controls to keep airborne levels below exposure limits. A
NIOSH-certified combination air-purifying respirator with an N, P or R 95 or HE class filter and an
organic vapor cartridge may be permissible under certain circumstances where airborne concentrations
are expected to exceed exposure limits. Protection provided by air-purifying respirators is limited. Use a
pressure demand atmosphere-supplying respirator if there is any potential for uncontrolled release,
exposure levels are not known, or under any other circumstances where air-purifying respirators may not
provide adequate protection.
SECTION 鈥? 9: PHYSICAL AND CHEMICAL PROPERTIES
Appearance: Dark brown liquid.
Formulation Type: Soluble concentrate.
Odour: Odourless.
pH: 4 - 6.
Vapour pressure and reference temperature: < 10-8 mmHg @ 25 oC (Diquat dibromide technical).
Vapour density: Not available.
Boiling point: Not available.
Melting point: Not available.
Freezing point: - 7 oC.
Specific gravity or density: 1.20 g/mL @ 20 oC.
Evaporation Rate: Not available.
Water/oil partition coefficient: Not available.
Odour threshold: Not available.
Viscosity: 2.3 cps @ 20 oC.
Solubility in Water: 718,000 mg/L @ 20 oC and pH 7.2 (Diquat dibromide technical).
SECTION 鈥? 10: STABILITY AND REACTIVITY
Chemical stability: Stable under normal use and storage conditions.
Conditions to avoid: Concentrate should not be stored in aluminum containers. Spray solutions should not be mixed,
stored or applied in containers other than plastic, plastic-lined steel, stainless steel or fiberglass.
Incompatibility with other materials: Strong alkalis and anionic wetting agents (e.g., alkyl and alkylaryl sulfonates).
Corrosive to aluminum.
Hazardous decomposition products: Flammable hydrogen gas may be formed on contact with aluminum. See
"Conditions to Avoid", Section 10. Can decompose at high temperatures forming toxic gases.
Hazardous polymerization: Will not occur.
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SECTION 鈥? 11: TOXICOLOGICAL INFORMATION
Acute toxicity/Irritation Studies (Finished Product):
Ingestion: Slightly Toxic
Oral (LD50 Female Rat): 886 mg/kg body weight
Dermal: Practically Non-Toxic
Dermal (LD50 Rat): > 5,050 mg/kg body weight
Inhalation: Slightly Toxic
Inhalation (LC50 Rat): > 0.80 mg/L air - 4 hours
Eye Contact: Irritating (Rabbit)
Skin Contact: Slightly Irritating (Rabbit)
Skin Sensitization: Not a Sensitizer (Guinea Pig)
Reproductive/Developmental Effects
Diquat dibromide:
Mutagenicity: No evidence with in vivo assays.
Development Toxicity: In rabbit studies a small percentage of fetuses had minor defects at 3
and 10 mg/kg/day.
Chronic/Subchronic Toxicity Studies
Diquat dibromide: Kidney weight decreases and cataracts seen in dogs at 12.5 mg/kg/day. No evidence
for neurotoxic effects in rats dosed up to 400 ppm in the diet for 13 weeks.
Carcinogenicity
Diquat dibromide: No evidence of carcinogenicity in rat and mouse studies.
Other Toxicity Information:
None.
Toxicity of Other Components
The acute toxicity test results reported in Section 11, above, for the finished product take into account any acute
hazards related to the 鈥渙ther components鈥? in the formulation.
Other materials that show synergistic toxic effects together with the product: None known.
Target Organs
Active Ingredient
Diquat dibromide: Eye, kidney.
Inert Ingredients
Not applicable.
REWARD庐 AQUATIC HERBICIDE
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SECTION 鈥? 12: ECOLOGICAL INFORMATION
Summary of Effects
Diquat dibromide:
This material is slightly toxic to fish. Toxic to invertebrates and birds. Practically non-toxic to bees.
Eco-Acute Toxicity
Diquat dibromide:
Bees LC50/EC50 (contact) 47 - 100 碌g/bee
Invertebrates (Water Flea) LC50/EC50 (48 hr) 0.77 鈥? 1.19 ppm
Fish (Trout) LC50/EC50 (96 hr) 14.8 ppm
Fish (Bluegill) LC50/EC50 (96 hr) 13.9 ppm
Birds (8-day dietary - Bobwhite Quail) LC50/EC50 106 ppm
Birds (8-day dietary - Mallard Duck) LC50/EC50 980 ppm
Eco-Chronic Toxicity
Diquat dibromide:
Birds: Bobwhite Quail Reproduction NOEL > 19.6 ppm
Birds: Mallard Duck Reproduction LOEL 25 ppm
Fish: Channel Catfish Earlier Life Stage MATC > 1 ppm
Fish: Fathead Minnow Earlier Life Stage MATC 0.197 ppm
Environmental Fate
The active ingredient, diquat dibromide has a low bioaccumulation potential, low mobility and high persistence in soil, but
non-persistent in water. Under field conditions, diquat dibromide did not degrade for 3 years after application; is
persistent, binds irreversibly to soil, and resistant to microbial degradation. Dissipation half-life in water is 1-2 days.
For Reward, the bulk material sinks in water (after 24 h).
SECTION 鈥? 13: DISPOSAL CONSIDERATIONS
Waste disposal information: Do not reuse empty containers. Empty container retains product residue. Triple rinse, or
equivalent, empty container, return rinse water to dilution mixture, and dispose of dilution mixture as a hazardous waste if
it cannot be disposed of by use according to label instructions. Dispose of empty containers in accordance with local
regulations. Consult provincial environment ministry for advice on waste disposal. Industrial/commercial waste may be
handled at licensed facilities only. Waste shipments must be securely packaged and properly labelled. Only licensed carriers
may be used, and proper documents must accompany the shipment.
SECTION 鈥? 14 : TRANSPORT INFORMATION
Shipping information such as shipping classification:
TRANSPORTATION OF DANGEROUS GOODS CLASSIFICATION - ROAD/RAIL
Proper Shipping Name : Corrosive Liquid, N.O.S. (contains diquat dibromide, 37.3% w/w)
Class : 8
UN# : UN1760
P.G. : III
IATA CLASSIFICATION - AIR
Proper Shipping Name : Corrosive Liquid, N.O.S. (Diquat Dibromide)
Hazard Class or Division : Class 8
Identification Number : UN 1760
Packing Group : PG III
Packaging Limitations: Inner packages over 5 liters and single packages over 60 liters cannot be shipped by cargo
aircraft; Inner packages over 2.5 liters and outer packages over 5 liters cannot be shipped by passenger aircraft.
REWARD庐 AQUATIC HERBICIDE
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SECTION 鈥? 15: REGULATORY INFORMATION
WHMIS classification for product: Exempt
A statement that the MSDS has been prepared to meet WHMIS requirements, except for use of the 16 headings.
This MSDS has been prepared in accordance with WHMIS requirements, but the data are presented under 16 headings.
Other regulations; restrictions and prohibitions
Pest Control Products (PCP) Act Registration No.: 26271
SECTION 鈥? 16: OTHER INFORMATION
The information contained herein is offered only as a guide to the handling of this specific material and has been prepared
in good faith by technically knowledgeable personnel. It is not intended to be all-inclusive and the manner and conditions
of use and handling may involve other and additional considerations. No warranty of any kind is given or implied and
Syngenta will not be liable for any damages, losses, injuries or consequential damages which may result from the use of or
reliance on any information contained herein. This Material Safety Data Sheet is valid for three years. This product is
under the jurisdiction of the Pest Control Products Act and is exempt from the requirements for a WHMIS compliant
MSDS. Hazardous properties of all ingredients have been considered in the preparation of this MSDS. Read the entire
MSDS for the complete hazard evaluation of this product.
Prepared by: Syngenta Crop Protection Canada, Inc.
1-87-SYNGENTA (1-877-964-3682)
Syngenta Crop Protection Canada, Inc. believes that the information and recommendations contained herein (including
data and statements) are accurate as of the date thereof. NO WARRANTY OF FITNESS FOR ANY PARTICULAR
PURPOSE, WARRANTY OF MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED, IS
MADE CONCERNING THE INFORMATION PROVIDED HEREIN. The information provided herein relates to the
specific product designated and may no be valid where such product is used in combination with any other materials or in
any process. Further, since the conditions and methods of use of the product and of the information referred to herein are
beyond the control of Syngenta Crop Protection Canada, Inc., Syngenta Crop Protection Canada, Inc. expressly disclaims
any and all liability as to any results obtained or arising from any use of the product or reliance on such information.
庐 Registered trademark of a Syngenta group company
REWARD庐 AQUATIC HERBICIDE
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