Carfentrazone 240

1 Trade nameManufacturerForm
4FARMERS CARFENTRAZONE 240 EC HERBICIDE4 FARMERS AUSTRALIA PTY LTDEMULSIFIABLE CONCENTRATE
AFFINITY FORCE HERBICIDEFMC AUSTRALASIA PTY LTDEMULSION - OIL IN WATER
Apparent Pound 240 HerbicideAPPARENT PTY. LTD.EMULSIFIABLE CONCENTRATE
CONQUEST SPIKE HERBICIDECONQUEST CROP PROTECTION PTY LTDEMULSIFIABLE CONCENTRATE
Fullguard 240 HerbicideSHANDONG RAINBOW INTERNATIONAL CO., LTD.EMULSIFIABLE CONCENTRATE
GATOR H20 HERBICIDEFMC AUSTRALASIA PTY LTDEMULSION - OIL IN WATER
GENFARM CARFENTRAZONE 240 EC HERBICIDELANDMARK OPERATIONS LIMITEDEMULSIFIABLE CONCENTRATE
HAMMER HERBICIDEFMC AUSTRALASIA PTY LTDEMULSIFIABLE CONCENTRATE
IMTRADE CARFENTRAZONE-ETHYL 240 EC HERBICIDEIMTRADE AUSTRALIA PTY LTDEMULSIFIABLE CONCENTRATE
MAXUNITECH CARFENTRAZONE-ETHYL 240 EC HERBICIDEORIENTAL (LUZHOU) AGROCHEMICALS CO., LTDEMULSIFIABLE CONCENTRATE
NAIL 240EC HERBICIDECROP CARE AUSTRALASIA PTY LTDEMULSIFIABLE CONCENTRATE
OZCROP CARFENTRAZONE 240 EC HERBICIDEOZCROP PTY. LTD.EMULSIFIABLE CONCENTRATE
RELYON CARPENTER 240EC HERBICIDERURALCO HOLDINGS LIMITEDEMULSIFIABLE CONCENTRATE
Relyon Drill 240EC HerbicideRURALCO HOLDINGS LIMITEDEMULSIFIABLE CONCENTRATE
SHARK AQUATIC HERBICIDEFMC AUSTRALASIA PTY LTDEMULSION - OIL IN WATER
SPOTLIGHT HERBICIDEFMC AUSTRALASIA PTY LTDEMULSIFIABLE CONCENTRATE
TASK HERBICIDEFMC AUSTRALASIA PTY LTDEMULSIFIABLE CONCENTRATE
TITAN CARFENTRAZONE 240EC HERBICIDETITAN AG PTY LTDEMULSIFIABLE CONCENTRATE
TURF CULTURE SMACKDOWN HERBICIDETURF CULTURE PTY LTDEMULSIFIABLE CONCENTRATE
UNITY 240 EW HERBICIDECROP CARE AUSTRALASIA PTY LTDEMULSION - OIL IN WATER

2 PRICE:

$112.2/kg
$112.2/L

3 ACTIVE INGREDIENTS: Carfentrazone-ethyl 240g/L

Formulation:

Contains emulsifier (calcium dodecylbenzene sulphonate [Alkanate CS]), surfactants (vegetable oil ethoxylate and ethoxylated C12-15 alcohols [Teric G12A7]) and solvent (aromatic hydrocarbons )

4 CHEMICAL GROUP:G. Herbicide.

Aryl triazolinone sub group. Inhibitor of protoporphyrinogen oxidase

5 RELATED HERBICIDES:

BlazerAcifluorfen 224g/L
Carfentrazone 240Carfentrazone-ethyl 240g/L
Carfentrazone 400Carfentrazone-ethyl 400g/kg
FlumioxazinFlumioxazin 500g/kg
OxyfluorfenOxyfluorfen 240g/L (or 500g/L)
Saflufenacil 700Saflufenacil 700g/kg

6 GENERAL DESCRIPTION:

A contact, fast acting, poorly translocated, non residual, early post emergence herbicide for the control of broad-leaved weeds in cereals, orchards and vineyards.

7 APPLICATION METHODS AND TIPS:

Good coverage is essential because this is mainly a contact herbicide.

Best results on moist soil, in fine weather on actively growing weeds with less than 8 leaves.

Use higher rate of herbicide and water on older and/or denser weed infestations.

Generally used in combination with knockdown herbicides for broader spectrum weed control.

8 WEATHER:

Rainfast in 1 hour.

Frost effects:

Wind:

Inversions: Avoid application during low level inversions as excessive drift may occur.

Temperature:

Delta T and relative humidity: Avoid application when Delta T is greater than

9 ADJUVANTS:

In most cases no adjuvant is needed.

A non ionic surfactant may improve control in some situations.

Spray Oils: Not required but can be used if required by companion herbicide.

10 WATER QUALITY:

Hard water: There may be a slight loss of activity due to ionic bonding in very hard water.

Colloids: Some loss of activity as the amount of clay in the water increases. If it is difficult to see a coin on the bottom of a 10 litre bucket full of water then the water should be cleared or an alternate source found.

pH: Acidic water is usually OK. Highly alkaline water may cause loss of efficacy.

Tank life: 10% loss over 1-2 days depending on amount of light entering tank.

11 COMPATIBILITY:

Trace elements.

12 EQUIPMENT:

Boom sprays:

Carrier volume: 50-150 L/ha. Use higher volumes on heavy weed infestations and on very small weeds.

Nozzles: Flat fan 11001 to 11002. Avoid using 11003 single orifice or 11006 twin orifice or larger nozzles as reduced weed control may result from insufficient droplet density. Similarly avoid flood jet, low-drift, boomless jet or air induction nozzles and CDA applicators.

Pressure: 150-400 kPa.

Aerial application:

For cotton only.

13 SPRAYER DECONTAMINATION:

Clean Up:

Clean soon after spraying to reduce the risk of forming dried deposits that may be difficult to remove.

Remove filters and clean separately. Rinse with soapy water (eg 500 mL or g of Drive, Dynamo, Omo or Surf per 100 L water) or water plus 0.25% wetting agent and run through boom. Rinse with water.

Decontamination:

Remove filters and clean separately. Rinse with water then fill with soapy water (eg 500 mL or g of Drive, Dynamo, Omo or Surf per 100 L water) or water plus 0.25% wetting agent and run through boom. Leave it stand for a few hours or overnight. Rinse with water.

Or use the same procedure with a commercial spray tank and equipment cleaner.

14 HERBICIDE RESISTANCE:

None reported.

15 REPLANTING INTERVALS:

CropTime
All0 days

16 WITHHOLDING PERIODS:

CropTypeTime
CottonHarvest1 day
CottonGrazingDon't graze or feed trash
Other cropsHarvestNot required
Other cropsGrazing14 days

17 RE-ENTRY PERIOD:

12 hours unless impervious footwear and chemical resistant gloves are used.

18 PROTECTIVE CLOTHING:

Use elbow length protective gloves, face shield or goggles when handling the concentrate.

19 SOIL:

Little effect of Soil Texture, pH and organic matter has little effect on carfentrazone.

Soil moisture: Under dry conditions use a wetter. Best results when soil is moist. May cause crop leaf spotting when soil is waterlogged.

20 MODE OF ACTION:

Uptake and translocation:

Contact. Rapidly absorbed through leaves within a few hours of application. Little translocation, very limited movement in phloem. Non residual.

Less than 0.001 ppm of carfentrazone moved to the grain when applied at 35 g a.i./ha to wheat at the late tillering stage. 0.07-0.1 ppm of carfentrazone and its metabolites were present in straw and leaves 60 days after application. Similar results were recorded in Maize.

Physiological effects:

Disrupts membranes by inhibition of protoporphyrinogen oxidase which is involved in chlorophyll production. This results in yellowing of the plant and the stopping of photosynthesis leading to death.

The herbicide requires light and oxygen for action and works better at higher temperatures.

The herbicide is modified within susceptible plants to phytotoxic compounds.

Residual Life and Breakdown:

21 SELECTIVITY:

Controls broad-leaved weeds in grass crops. It has little action on grass plants.

Crop tolerance:

No crop symptoms because it is usually applied as a directed spray or before planting. Drift may show as yellow spotting. New growth has no symptoms.

Varietal sensitivities:

Effect on Clover Species:

Kills clovers.

Effect on Medic Species:

Kills medics.

Effect on Lucerne:

Kills seedling lucerne. Damages established lucerne.

Effect on Native Plants:

Causes leaf spotting on most broad-leaved native plants.

22 DISEASE AND INSECT EFFECTS:

23 PLANT SYMPTOMS:

Weeds

Tissue death occurs within a few hours to days of spraying. Symptoms develop more rapidly under warm, moist conditions. Under very dry conditions symptoms may be slower to develop. Symptoms are usually chlorosis (yellowing) progressing into necrosis (death).

Crop

No crop symptoms because it is usually applied as a directed spray or before planting. Drift may show as yellow spotting. New growth has no symptoms.

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

Details:

Poison schedule: S5. Active ingredient is a non scheduled poison but it receives a S5 rating because it has more than 25% hydrocarbons as solvent in the product.

Mammalian toxicity - Low.

Acute oral LD50 - Low, >5000 mg/kg (rats), [For comparison table salt is 3000 mg/kg]

Acute dermal LD50 - Low, >5000 mg/kg (rat).

Skin - Non irritating. Non sensitising. Formulated product is mildly irritating.

Eye - Minimal irritation. Formulated product is mildly irritating.

Vapour inhalation - LC50 - Low, >6 mg/L air (rat, 4 hours).

Chronic oral toxicity NOEL - ppm for two years.

Not mutagenic or teratogenic (i.e. does not cause cancer or reproductive problems).

Other Species -

Birds - Slightly toxic.

Fish - moderately toxic. LC50 1.6-2 ppm.

Invertebrates - slightly toxic. LC50 >9.8 ppm.

Bees - toxicity.

Algae - Highly toxic. EC50 = 15 ppb.

Metabolism:

The breakdown pathway in animals is similar to that in plants. The main breakdown is by hydrolysis, oxidation and dechlorination. Very little parent carfentrazone is left after 48 hours in plant and animal systems.

At 3 mg/kg feed daily intake for cows no residues were detected in milk, or meat. At 10 mg/kg feed daily some residues were detected in milk and kidney. At 90 mg/kg in goats residues were detected in milk, kidney and liver. There was no accumulation. The maximum transfer factor (maximum residue versus feeding rate) was 0.08% for milk and 0.13% for kidney.

About 87% of ingested carfentrazone is excreted within 24 hours with about 80% in the urine and 7% in the faeces.

Poultry fed 10 mg/kg daily intake had less than 0.007 ppm in eggs, fat and meat. 0.06 ppm was detected in liver.

In rats, 72-87% of ingested carfentrazone is passed in the urine and 10-26% passed in faeces within 7 days of consumption with most being eliminated within 24 hours. Peak plasma levels of carfentrazone and its metabolites occur at 4- 6 hours and red blood cell levels at 8-16 hours. It is rapidly absorbed and excreted.

There is little or no potential for bio accumulation.

Residues:

Wheat: At 30 g a.i./ha of carfentrazone applied post emergence to Wheat, residues were detected at 1 hour and up to 7 days after application. No residues have been detected at 14 days after application or in the grain or straw.

Barley, Oats and Triticale: At 24 g a.i./ha of carfentrazone applied post emergence to Barley, Oats or Triticale, residues were detected at 1 hour and up to 7 days after application. No residues have been detected at 14 days after application or in the grain or straw.

25 TOXICITY SYMPTOMS:

26 FIRST AID:

Contact a doctor or Poisons Information Centre on 13 11 26.

If Swallowed - Do NOT induce vomiting. Give a glass of water Contact a doctor.

If on Skin - Wash skin thoroughly with soap and water.

If in Eyes - Flush with water for 15 minutes.

If Inhaled - Remove patient from contaminated area to fresh air.

Advice to doctor - Treat symptomatically. Contains hydrocarbon solvent that may produce chemical pneumonitis. Lavage requires intubation. Activated charcoal and cathartics will assist gastrointestinal tract evacuation.

27 ENVIRONMENTAL FATE:

Carfentrazone ethyl has a half life in soil of 1-5 days and its metabolites have a half life of 3-26 days in moist soil at normal temperatures. In field applications with 100 g a.i./ha applied, no detectable residues of the parent or its metabolites were found below 20 cm. In Rice paddies the half life in water of carfentrazone ethyl and its metabolites was 2-10 days and in the sediment 23-59 days. It is degraded in both aerobic and anaerobic conditions.

Aerobic soil metabolism: In a silty clay loam, it has an initial rapid breakdown over the first 8 days with a half life of 2.2-2.5 days followed by a slower breakdown rate with a half life of 43-71 days. In other soils at water contents of 50-75% of field capacity and temperatures of 10-25 degrees C the time for 50% degradation ranged from <0.1 days to 2.5 days and the time for 90% degradation varied from 0.2 days to 482 days. The acid metabolites have half lives ranging from 30-3000 days.

Anaerobic soil metabolism: Carfentrazone ethyl half life of less than 1 day and 90% degradation within 4 days.

Aerobic aquatic metabolism: Carfentrazone ethyl half life ranged from 0.84 days at 20 C to 5 days at 10 C with little difference between totally wet soils and those with surface water only.

It has a half life in water exposed to sunlight of 8.5 days.

Hydrolysis: It rapidly hydrolyses at pH 9 with a half life of 5.1 hours at 20 or 25 C. At pH 7 the half life is 13.7 days at 20 C and 8.6 days at 25 C. It is hydrolytically stable at pH 5.

Photo-degradation in water: Carfentrazone ethyl and it major metabolite rapidly photo-degrade in light. The half life is 69.7 hours at pH5 (where minimal hydrolysis occurs) This is equivalent to 8.3 days of sunlight at 40 degrees south in summer. It is stable in the dark.

It has a soil mobility that is low.

Photo-degradation in soil: Carfentrazone ethyl was not broken down by sunlight on soil.

Ground water contamination: It has a low potential for movement is soils. Under field use conditions carfentrazone ethyl and its acid metabolites remained in the top 20 cm of soil even though they have the potential to be mobile.

Bio-accumulation: Low potential for accumulation, Log P =3.36, bio-concentration factor in fish = 206.

Does not accumulate in milk and tissues.

Replanting intervals - short. No crop rotation restrictions.

28 REGISTERED CROPS:

See HerbiGuide Species Solution tab.

29 REGISTERED WEEDS:

See HerbiGuide Species Solution tab.

30 REGULATION AND LEGAL:

UN number:

CAS numbers:

OPP Chemical Code:

Hazchem code:

NOHSC classification:

Land transport:

Dangerous goods class (ADG): not classified as a dangerous good.

Sea transport:

Proper shipping name:

International Maritime Dangerous Goods Code (IMDG):

Class:

Packaging group:

EPG:

Risk phrases:

R66 Repeated exposure may cause skin dryness and cracking.

Safety phrases:

S2 Keep out of reach of children.

S13 Keep away from food, drink and animal feeding stuffs.

S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

S37 Wear suitable gloves.

S46 If swallowed, seek medical advice immediately and show this container or label.

31 PROPERTIES:

Colour: Yellow orange (Gardner No. 12)

Odour: Slight petroleum odour.

Form: Viscous liquid at room temperature.

Chemical name:

Empirical formula:

IUPAC

CAS

Water solubility at 25 C. - 42 ppm at 25 C and pH. Product emulsifies.

Oil solubility - Miscible with acetone, ethanol, ethyl acetate, methanol and methylene chloride at 23 C.

Octanol:Water ratio at 25 C. - at pH 5;

Vapour Pressure: Non volatile. 1.2 x 10-7 mm Hg at 25 C. -

Dissociation constant - pKa

Boiling point - 182 C at 2 mm Hg.

Melting point - C.

pH 5.8 at 1% solution, 5.25 at 5% solution.

Molecular weight -

Density - 1.423 g/cm3 at 25 C. Specific gravity 1.075 g/cm3 at 20 C.

Half life in water - 8.5 days at pH5 and 35 C. At 25 C, >30 days at pH 5, 8.6 days at pH 7, 0.148 days at pH 9. At 20 C, >30 days at pH 5, 13.7 days at pH 7, 0.212 days at pH 9.

Thermal stability: Stable from -17 C to 150 C.

Slightly combustible. Thermal decomposition and burning may produce toxic by products. May produce carbon monoxide, oxides of nitrogen, hydrogen chloride and hydrogen fluoride.

Flashpoint: >93 C.

Corrosive properties: Non corrosive to stainless steel and polyethylene used in sprayers.

32 SPILLS:

Extinguish possible sources of ignition.

Absorb spill with earth, sand, clay or absorbent material such as vermiculite.

Ventilate area after cleanup.

33 FIRE:

Extinguish with water spray, foam, carbon dioxide or dry agent.

Toxic fumes may be released in fire. Wear breathing apparatus or avoid smoke.

34 COMMENTS:

Other uses include desuckering grapevines.

35 REFERENCES:

Ashton, F.M. and Crafts, A.S. (1981) Mode of Action of Herbicides. (Wiley-Interscience publication).

Kearney, P.C. and Kaufman, D.D. (1976). Herbicides. Chemistry, degradation and mode of action. Vol 1 & 2.

Acknowledgments:

Collated by HerbiGuide. For more information see or phone 08 98444064.