crop-chem-docs/corpus/epa_ppls/5905-506.md

# WEED-RHAP MCPA ESTER

- EPA Reg No: **5905-506**
- Registrant: HELENA AGRI-ENTERPRISES, LLC, D/B/A HELENA CHEMICAL COMP
- Signal word: Caution
- Active ingredients: MCPA, 2-ethylhexyl ester (74.4%)
- Label accepted: 2011-05-04
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/005905-00506-20110504.pdf

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
WASHINGTON, D.C. 20460 
Bill Washburn 
Helena Chemical Company 
225 Schlling Blvd., Suite 300 
Collierville, Tenn. 38017 
Dear Mr. Washburn: 
SUBJECT: Label Amendment 
Weed-Rhap MCPA Ester 
OFFICE OF CHEMICAL SAFETY 
"- _. - ---AND"POI:LUTION"PREVENTION--· -
MAY - 4 2011 
EPA Registration No. 5905-506 
Your Submission Dated January 21,2011 
The label amendment referred to above, submitted in accordance with registration 
under the Federal Insecticide, Fungicide, and Rodenticide Act, as amended, is 
acceptable. A stamped copy is enclosed for your records. Please submit one (1) copy of 
your final printed labeling before you release the product for shipment. This amended 
labeling supersedes all previously accepted ones. 
Enclosure 
Sincerely yours, 
Kat ryn V. Montague 
Product Manager (23) 
Herbicide Branch 
Registration Division (7505P)

( r- [A C C E p'rIT 
WEED-RHAP® I MAY - + 2011 
I Under the· Fedsl"ru Insectlclde, 
M C PA E ST E R 
I l"ungtolde, !U1:: fu:ldentioi~e Act, 
f c,B am~,nded, Wi' ·I,!!e pest~olde I 
FOR THE SELECTIVE CONTROL OF MANY BROAD LEAF WEEDS IN WHEA.rj~At~r~~~~~5.9J:?~-=-2~~! 
_~Ag~E:X, ~,(~--fL8~, GR!:\S~~AND,l\N[) I]'J I\IQ]\I~CHPP ARE:8S 
ACTIVE INGREDIENT: 
2-Ethylhexyl Ester of 2-Methyl-4-Chlorophenoxyacetic acid ...... 74.4% 
INERT INGREDIENTS:.......................... ........................ 25.6% 
TOTAL ............................................................... 100.0% 
Equivalent to 47.7% or 4lbs. of MCPA. 
U. S. Patent No. 6,232,672 
KEEP OUT OF REACH OF CHILDREN 
CAUTION 
PRECAUTIONARY STATEMENTS 
CAUTION 
HAZARDS TO HUMANS AND DOMESTIC ANIMALS 
Harmful if swallowed, inhaled or absorbed through skin. Avoid contact with skin, eyes, or clothing. Avoid inhaling vapor or spray 
mist. Prolonged or frequently repeated skin contact may cause allergic reactions in some individuals. 
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 any liquid to the person. 
• Do not give anything to an unconscious or convulsing 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 immediately for treatment advice. 
IF IN EYES: 
• Hold eyelid 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. 
• Call a poison control center or doctor immediately for treatment advice. 
IF INHALED: 
• Move victim to fresh air. 
• If not breathing, call 911 or an ambulance, then give artificial respiration, preferably mouth-to-mouth if possible. 
NOTE TO PHYSICIAN: May pose an aspiration pneumonia hazard. Contains petroleum distillate. 
HOT LINE NUMBER: Have the product container or label with you when calling a poison control center or doctor or going for 
treatment. In case of emergency, call ChemTrec at 1-800-424-9300. 
EPA REG. NO. 5905-506 
EPA EST. NO. 228-IL-001 
See Inside Panel For Additional Precautionary Statements. 
NET CONTENTS: 2.5 Gallon (9.46 Liters) 
ADXXXXXX 
MANUFACTURED FOR 
HELENA CHEMICAL COMPANY 
225 SCHILING BOULEVARD, SUITE 300 
COLLIERVILLE, TENNESSEE 38017 
Filename: Weed Rhap MCPA Ester (5905-506) 050311 CLN.doc 
[Alternate Brand Name: Wildcard Herbicide]

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PERSONAL PROTECTIVE EQUIPMENT 
Some materials that are chemical-resistant to this product are: Laminate, Nitrile Rubber, Neoprene Rubber and Viton. If you want more options, 
follow the instructions for category F on an EPA chemical-resistance category selection chart. 
Mixers, loaders, applicators, flaggers, and other handlers must wear: 
• Long-sleeved shirt and long pants 
----e---Shoesplus-socks,and-
• Chemical-resistant gloves 
Additional PPE requirements for mixers and loaders supporting aerial application to rangelands, pasture lands, or noncropland. 
These mixerslloaders also must wear: 
• A chemical-resistant apron and 
• NIOSH-approved respirator with as dust/mist filter with MSHAINIOSH approval prefix TC-21 C or any N, R, P, or HE filter. 
"See Engineering Control for additional requirements." 
User Safety Requirements 
Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions for washables exist, use detergent and hot water. Keep and 
wash PPE separately from other laundry. 
Engineering Controls Statements (including those for aerial applications): 
• Enclosed Cockpits 
• Pilots use an enclosed cockpit that meets the requirements listed in the WPS for agricultural pesticides [(40 CFR 170.240(d)(6)). 
USER SAFETY RECOMMENDATIONS 
• Users should wash hands before eating, drinking, chewing gum, using tobacco or using the toilet. 
• Users should remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing. 
• Users should remove PPE immediately after handling this product. Wash the outside of gloves before removing. As soon as possible, wash 
thoroughly and challge into clean clothing. 
ENVIRONMENTAL HAZARDS 
This pesticide is toxic to aquatic invertebrates. Do not apply directly to water, to areas where the surface water is present, or to intertidal areas 
below the mean high water mark. Do not contaminate water when disposing of equipment wash water or rinsate. Drift and runoff may be hazardous 
to aquatic organisms in water adjacent to treated areas. Runoff of this product will be reduced by avoiding applications when rainfall is forecasted to 
occur within 48 hours. 
This chemical has properties and characteristics associated with chemicals detected in groundwater. The use of this chemical in areas where soils 
are permeable, particularly where the table is shallow, may result in groundwater contamination. 
CHEMIGATION STATEMENT 
Do not apply through any type of irrigation system. 
PHYSICAL OR CHEMICAL HAZARDS 
Do not use or store near heat or open flame. Do not cut or weld container. 
DIRECTIONS FOR USE 
It is a violation of federal law to use this product in a manner inconsistent with its labeling. 
Do not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the 
area during application. For any requirements specific to your State or Tribe, consult the agency responsible for pesticide regulation. 
Filename: Weed Rhap MCPA Ester (5905-506) 050311 CLN.doc 
[Alternate Brand Name: Wildcard Herbicide] 
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AGRICULTURAL USE REQUIREMENTS 
Use this product only in accordance with its labeling and with the Worker Protection Standard, 40 CFR Part 170. This Standard contains 
requirements for the protection of agricultural workers on farms, forests, nurseries, and greenhouses, and handlers of agricultural pesticides. 
It contains requirements for training, decontamination, notification, and emergency assistance. It also contains specific instructions and 
--- --exceptions-pertainingJoJhe-statementson this label about personal protective equipment(R~E), and restricted-entry-interval.-:rhe­
requirements in this box only apply to uses of this product that are covered by the Worker Protection Standard. 
Do not allow worker entry into treated areas during the restricted entry interval (REI) of 12 hours. 
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 such as barrier laminate, butyl rubber, nitrile rubber or viton 
• Shoes plus socks 
NON-AGRICULTURAL USE REQUIREMENTS 
The requirements in this box apply to uses of this product that are NOT within the scope of the Worker Protection Standard for agricultural 
pesticides (40 CFR Part 170). The WPS applies when this product is used to produce agricultural plants on farms, forests, nurseries, or 
greenhouses. 
Do not allow people orpets to enter treated area until sprays have dried. 
STORAGE AND DISPOSAL 
Do not contaminate water, food, or feed by storage or disposal. Open dumping is prohibited. 
PESTICIDE STORAGE: Do not store this product near fertilizers, seeds, insecticides or fungicides. Protect product from freezing. If subjected 
to freezing conditions, warm to 70' F and agitate. This will return the product to original condition. Reclose all partially used containers by 
thoroughly tightening the screw cap. Damaged or leaking containers, which cannot be used immediately, should be transferred to suitable 
sound containers and properly marked. Absorb any spill with a suitable clay absorbent and dispose of as indicated under the pesticide disposal 
section. 
For safety and prevention of unauthorized use, all pesticides should be stored in locked facilities. To prevent accidental misuse, different 
pesticides should be stored in separate areas with enough distance between to provide clear identification. 
Opened, partially-used pesticide should be stored in original labeled containers when possible. When transfer to another container is 
necessary because of leakage or damage, carefully mark and identify contents of the new container. 
PESTICIDE DISPOSAL: Wastes resulting from the use of this product may be disposed of on site or at an approved waste disposal facility. 
CONTAINER DISPOSAL: 
NONREFILLABLE CONTAINER (EQUAL TO OR LESS THAN 5 GALLONS): Do not reuse or refill this container. Triple rinse container (or 
equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining contents into application equipment or a mix tank and drain for 
10 seconds after the flow begins to drip. Fill the container % full with water and recap. Shake for 10 seconds. Pour rinsate into application 
equipment or a mix tank or store rinsate for later use or disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure two 
more times. Offer for recycling, if available. 
NONREFILLABLE CONTAINER (GREATER THAN 5 GALLONS): Do not reuse or refill this container. Triple rinse container (or equivalent) 
promptly after emptying. Triple rinse as follows: Empty the remaining contents into application equipment or a mix tank. Fill the container % full 
with water. Replace and tighten closures. Tip container on its side and roll it back and forth, ensuring at least one complete revolution, for 30 
seconds. Stand the container on its end and tip it back and forth several times. Turn the container over onto its other end and tip it back and 
forth several times. Empty the rinsate into application equipment or a mix tank or store rinsate for later use or disposal. Repeat this procedure 
two more times. Offer for recycling, if available. 
REFILLABLE CONTAINER: Refill this container with pesticide only. Do not reuse this container for any other purpose. Cleaning the container 
before final disposal is the responsibility of the person disposing of the container. Cleaning before refilling is the responsibility of the refiller. To 
clean the container before final disposal, empty the remaining contents from this container into application equipment or mix tank. Fill the 
container about 10 percent full with water. Agitate vigorously or recirculate water with the pump for 2 minutes. Pour or pump rinsate into 
application equipment or rinsate collection system. Repeat this rinsing procedure two more times. 
Filename: Weed Rhap MCPA Ester (5905-506) 050311 CLN.doc 
[Alternate Brand Name: Wildcard Herbicide] 
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GENERAL PRECAUTIONS AND RESTRICTIONS: 
WEED RHAP MCPA ESTER is injurious'to most broad leaf plants. Although this product contains material of low volatility, use it with caution where 
the spreading of vapors can damage nearby susceptible plants. 
Physical Drift from the application of this product may also cause injury to susceptible plants. Do not apply directly to or otherwise permit even 
minute amounts (such as spray drift) to contact fruit trees, vegetables, flowers, ornamentals, or other desirable plants susceptible to MCPA. DO 
____ NOJ_A~~LY-'N_IHLVICINIIY.OE COUON,_GRA~ES, TOBACCO, OR TOMATOES. Do not.usejn oLneaLa-greenhouse. Do.not spray when 
wind is blowing towards susceptible crops or ornamental plants. 
Spray Drift Management: 
The applicator and the grower are responsible for considering all these factors when making decisions. Avoiding spray drift at the application site is 
the responsibility of the applicator. The interaction of many equipment-and-weather-related factors determine the potential for spray drift. 
Apply only as a medium or coarser spray (ASAE standard 572) or a volume mean diameter of 300 microns or greater for spinning atomizer nozzles. 
Apply only when wind speed is 2-10 mph at the application site. 
Additional requirements for aerial applications: 
• The boom length must not exceed 75% of the wingspan or 90% of the rotor blade diameter. 
• Release spray at the lowest height consistent with efficacy and flight safety. Do not release spray at a height greater than 10 feet above the 
crop canopy. 
• When applications are made with a crosswind, the swath will be displaced downwind. The applicator must compensate for this displacement at 
the downwind edge of the application area by adjusting the path of the aircraft upwind. 
• Do not make applications into temperature inversions. 
Additional requirements for ground boom applications: 
Do not apply with a nozzle height greater than 4 feet above the crop canopy. 
Application Restrictions: , 
Do not apply this product in a way that will contact any person, or pet, either directly or through drift. Keep people and pets out of the area during 
application. 
Entry Restrictions: Do not allow people or pets to enter the treated area until sprays have dried. 
WHERE TO APPLY: 
WEED RHAP MCPA Ester is used to control broadleaf weeds in flax, small grains, grass pastures, and rangeland. This product will kill or control the 
following weeds in addition to many other noxious plants susceptible to MCPA: 
M tS os fbi W d ( uscepll e ee s mos areas : 
Arrowhead Jimsonweed 
Beggartick Lambsquarters 
Burdock Marshelder 
Cocklebur Mint (dragonhead) 
Croton (goatweed) Mustard 
Galinsoga Pennygrass (field) 
Goatsbeard Pepperweed (field) 
L S 'bl W d ess usce"tl e ee s: 
Burcucumber Dandelion 
Buttercup Hempnettle 
Canada Thistle Hoary Cress 
Catsear Honeysuckle 
Chervil Miner's Lettuce 
Filename: Weed Rhap MCPA Ester(5905-506) 050311 CLN.doc 
[Alternate Brand Name: Wildcard Herbicide] 
Puncturevine Water Plantain 
Ragweed Wild Radish 
Redstem Witchweed 
Shepherdspurse Yellow Rocket (winter cress) 
Sicklepod and many other species. 
Sneezeweed 
Stinkweed 
Plantain Sunflower 
Pigweed Vetch 
Purslane White Top 
Sow Thistle 
Stinging Nettle 
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WHEN TO APPLY: 
Apply the product during warm weather when weeds are young and actively growing. Uniform spray coverage is necessary for best results. 
Generally the lower dosages listed will be satisfactory for young, succulent growth of sensitive weed species. For less sensitive species and under 
conditions where control is difficult, the higher doses will be needed. 
HOW TO APPLY: 
PREPARING THE SPRAY.:..J\1ix. tlJe .. MCPl- e..§teLlf:litb_'v'@t~Iu!Jles~.oJb~I}VL~~ irl.9JcatecLQnJhe!~b~1. fill th~rl1ixing taDk9L~p[ay t~nkwitb 
approximately 1/2 the amount of water to be used for spraying. Add the required amount of product with agitation: Add the remainder of the water 
while continuing to agitate. NOTE: Adding oil, wetting agents, or other adjuvants to the spray may reduce selectivity to crops, possibly causing crop 
damage. 
SPRAYING CONDITIONS: Use a moderate spray pressure of approximately 20 PSI. Enough spray volume should be used to give good coverage of 
the weeds being sprayed. This is usually 5 to 30 gallons by ground application or 3 to 10 gallons by air. Higher spray volumes may be useful in some 
situations to provide better spray coverage when weeds are especially dense and/or to reduce spray drift. 
WEED CONTROL APPLICATIONS 
FLAX: Use 1/4 to 1/2 pint per acre. Apply by ground sprayer or by airplane. Use sufficient water to give uniform and adequate coverage. 
Apply only when weeds are up and when flax is 4 to 8 inches high and before it comes into bud. Treatment after early bud stage may result in severe 
damage. If Canada thistle is present, it may be necessary to go as high as 1/2 pint per acre to prevent seed head production. Some injury to the flax 
may result. Flax varieties may vary in tolerance to MCPA. NOTE: Do not apply more than 1/2 pint (.25 lb. a.e.) per acre per year. Consult local 
Extension Service or University Specialists for advice on herbicide use in flax. Do not forage or graze meat animals on treated areas within seven 
days of slaughter. 
WEED CONTROL IN SMALL GRAINS: NOTE: Do not permit dairy animals or meat animals being finished for slaughter to forage or graze treated 
grain fields within 2 weeks after treatment. Do not forage or graze. meat animals on treated areas within 7 days of slaughter. 
Wheat. Barley. Oats and Rye: Use 1/2 to 1.5 pints of MCPA ester per acre for the more susceptible weeds when grains are in the 3- to 4-leaf stage 
or up to early boot stage. Apply when weeds are very small for best results. 
NOTE: Do not apply more than 1.5 pints (.75 lb. a.e.) per acre per year during the boot-to-dough stage of the grain. 
SOD FARMS: 
Do not apply more than 3 pints (1.5Ib. a.e.) per acre per year. 
Do not apply more than 2 applications per year with a minimum retreatment interval of 21 days. 
GOLF COURSES: 
Do not apply more than 3 pints (1.5Ib. a.e.) per acre per year. 
Do not apply more than 2 applications per year with a minimum retreatment interval of 21 days. 
RESIDENTIAL TURF: 
Do not apply more than 3 pints (1.5Ib. a.e.) per acre per year. 
Do not apply more than 2 applications per year with a minimum retreatment interval of 21 days. 
GRASSES GROWN FOR SEED: Use 1 to 3 pints per acre, the higher rate where weed stands are heavy. In established grasses, apply in spring 
before head comes into boot and on seedling grass after grass has tillered. Do not use from early boot to milk stage. Do not apply more than 3 pints 
(1.5 lb. a.e.) per acre per year. Do not apply more than 2 applications per year with a minimum retreatment interval of 21 days. 
PASTURE/RANGELAND: Use 1 to 3 pints of MCPA ester per acre. Apply when weeds are small and actively growing for best results. Use the 
higher rates for whitetop, Canada thistle, buttercup and other more difficult to control weeds. Spray perennials in early bud to full bloom stage and 
regrowth in the fall. Legumes may be injured or killed. Do not apply more than 3 pints (1.5 lb. a.e.) per acre per year. Do not apply more than 2 
applications per year with a minimum Retreatment interval of 21 days. 
Grass Cut for Hay: Use 1 to 3 pints per acre in sufficient water (2 to 120 gallons) in airplane or ground sprayer application to provide thorough 
coverage. Use higher rate for White top, Canada Thistle, and other hard to kill weeds; spray perennials in early bud to full bloom stage and regrowth 
in fall. Spray other weeds in spring or fall. 
Precautions and Restrictions: When using on grass cut for hay there is a (1) 7 day pre-grazing interval for dairy cattle; (2) 3 day pre-slaughter interval 
for meat animals. 
Filename: Weed Rhap MCPA Ester (5905-506) 050311 CLN.doc 
[Alternate Brand Name: Wildcard Herbicide] 
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NOTE FOR WEED CONTROL IN GRASSES: Do not use this treatment where legumes, especially alfalfa, are present and desirable. 
In some areas, bent, buffalo, carpet, and St. Augustine grasses may be susceptible to injury. Do not use on newly seeded areas until grass is well 
established. 
NON-CROPLAND RIGHTS-OF-WAY (Broadcast Treatment): For control of susceptible weeds in fencerows, fallow lands, rights-of-way, roadsides 
and similar areas, use 3 pints of product per acre in enough water to give sufficient coverage. Do not apply more than 3 pints (1.5 Ibs. a.e.) per acre 
_.~~!'y~ar. 00_ not a~~LI'DQre th§ln) ..8pplicatio.rl.s. p~!..y~~r \~ith_9 minimlJm retrElatment interval of 21 d.ays. NQTE: On fallowland, do notplant any 
crop until 3 months after treatment or until chemical has disappeared from soil. 
NON-CROPLAND RIGHTS-OF-WAY (Spot Treatment): For weed control in pastures, rangelands, and in non-crop areas such as fence rows, 
farmyards, shelterbelts, and roadsides: Do not use more than 3 quarts (3.0 lb. a.e.) per acre per year to control weeds such as Canada thistle, white 
top, meadow buttercup, and Texas blueweed. Apply when weeds are growing vigorously, usually prior to bloom, and spray fall regrowth if necessary. 
CONDITIONS OF SALE - LIMITED WARRANTY 
AND LIMITATIONS OF LIABILITY AND REMEDIES 
Read the Conditions of Sale -Warranty and Limitations of Liability and Remedies before using this product. If the 
terms are not acceptable, return the product, unopened, and the full purchase price will be refunded. 
The directions on this label are believed to be reliable and should be followed carefully. Insufficient control of pests and/or injury to the crop to which 
the product is applied may result from the occurrence of extraordinary or unusual weather conditions or the failure to follow the label directions or 
good application practices, all of which are beyond the control. of Helena Chemical Company (the "Company") or seller. In addition, failure to follow 
label directions may cause injury to crops, animals, man or the environment. The Company warrants that this product conforms to the chemical 
description on the label and is reasonably fit for the purpose referred to in the directions for use subject to the factors noted above which are beyond 
the control of the Company. To the extent consistent with applicable law, the Company makes no other warranties or representations of any kind 
express or implied, concerning the product, including no implied warranty of merchantability or fitness for any particular purpose, and no such 
warranty shall be implied by law. 
To the extent consistent with applicable law, the exclusive remedy against the Company for any cause of action relating to the handling or use of this 
product shall be limited to, at Helena Chemical Company's election, one of the following: 
1. Refund of the purchase price paid by buyer or user for product bought, or 
2. Replacement of the product used 
To the extent allowed by law, the Company shall not be liable and any and all claims against the Company are waived for special, indirect, incidental, 
or consequential damages or expense of any nature, including, but not limited to, loss of profits or income. The Company and the seller offer this 
product and the buyer and user accept it, subject to the foregoing conditions of sale and limitation of warranty, liability and remedies. 
© Copyright Helena Holding Company, 2010. 
WILDCARD® is a registered trademark of Helena Holding Company 
Filename: Weed Rhap MCPA Ester (5905·506) 050311 CLN.doc 
[Alternate Brand Name: Wildcard Herbicide] 
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