Ethoxysulfuron

1 Trade nameManufacturerForm
HERO SELECTIVE HERBICIDEBAYER CROPSCIENCE PTY LTDWATER DISPERSIBLE GRANULE

2 PRICE:

$414.7/kg

3 ACTIVE INGREDIENTS: Ethoxysulfuron 600g/kg

4 CHEMICAL GROUP: L5 RELATED HERBICIDES:

BensulfuronBensulfuron 600g/kg
BroadstrikeFlumetsulam 800g/kg
ChlorsulfuronChlorsulfuron 750g/kg
CrusaderPyroxsulam 30g/L + cloquintocet-mexyl 90g/L
EclipseMetosulam 100g/L
EclipseMetosulam 714g/kg
EthoxysulfuronEthoxysulfuron 600g/kg
ExpressTribenuron methyl 750g/kg
FlameImazapic 240g/L
Harmony MMetsulfuron 68g/kg + thifensulfuron-methyl 682g/kg
Imazapic plus ImazapyrImazapic 525 + Imazapyr 175g/L
ImazapyrImazapyr 250g/L or 750g/kg
IntervixImazamox 33g/L + imazapyr 15g/L
Iodosulfuron 100Iodosulfuron 100g/kg
Iodosulfuron plus mefenpyrIodosulfuron 100g/L + mefenpyr
LightningImazapyr 175g/L + imazethapyr 525g/L
Logran 750Triasulfuron 750g/kg
Mesosulfuron 30Mesosulfuron 30g/L
Metsulfuron-methylMetsulfuron 600g/kg
MusterEthametsulfuron-methyl 750g/kg
Raptor WG 700Imazamox 700 g/kg
SempraHalosulfuron 750g/kg
SpinnakerImazethapyr 700g/kg or 240g/L
SulfometuronSulfometuron 750g/kg
SulfosulfuronSulfosulfuron 750g/kg
TitusRimsulfuron 250g/kg
TrifloxysulfuronTrifloxysulfuron 750g/kg

6 GENERAL DESCRIPTION:

A selective, mainly foliar absorbed with some root absorption, post emergence, translocated sulfonylurea herbicide used mainly for nutgrass control in sugarcane.

7 APPLICATION METHODS AND TIPS:

Apply to actively growing plants and ensure thorough coverage.

Use directed sprays in Sugarcane.

Use nozzles delivering a medium spray droplet classification and more than 250 L/ha water.

Agitate during spraying.

Use a wetting agent.

Avoid runoff into waterways. Don't apply to wet or waterlogged soils or if rain or irrigation is expected within 48 hours. Very toxic to aquatic plants.

8 WEATHER:

Rainfast in 48 hours.

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:

Wetting agents: Use a non ionic surfactant at 100 mL/100 L spray mix for 1000 g/L products.

Spray oils:

10 WATER QUALITY:

Hard water:

Salty water:

Colloids:

pH:

Tank life: Long.

11 COMPATIBILITY:

Trace elements.

See HerbiGuide Compatibilities button.

12 EQUIPMENT:

Boom sprays:

Carrier volume: More than 250 L/ha.

Nozzles: Flat fan.

Pressure: 150-400 kPa.

Droplet size: Medium spray droplet classification.

Aerial application:

Not registered for use by aircraft.

Carrier volume:

13 SPRAYER DECONTAMINATION:

Clean up:

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

Remove nozzles and filters and clean separately. Triple 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. This procedure is sufficient for spraying in tolerant crops or non selective applications.

Decontamination:

Remove the nozzles and filters and clean separately and allow to soak in a mixture of 500 mL chlorine bleach (4%) per 10 L water for at least 30 minutes.

Rinse sprayer 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. Drain tank and flush with clean water for a minimum of 10 minutes to remove all traces of liquid fertilisers or adjuvants containing ammonia, such as ammonium sulphate or ammonium nitrate, before adding chlorine bleach, because bleach and ammonia will react to release a toxic gas.

Fill tank with clean water and add 300 mL household chlorine (4%) bleach per 100 L water, flush through hoses and boom then stand for 15 minutes with agitation engaged, repeat. Rinse tank, hoses and boom thoroughly with clean water to remove traces of bleach.

Rinse filters and nozzles in water and replace then rinse the whole system with water again.

14 HERBICIDE RESISTANCE:

Tolerant plants are expected to occur and may dominate the weed population after repeated applications.

15 REPLANTING INTERVALS:

CropTime
Bean; Guar3 months
Bean; Navy6 months
Lablab or Dolichos Lab-Lab3 months
Sugarcane0 days

16 WITHHOLDING PERIODS:

CropTypeTime
AllGrazing 
AllHarvest 

17 RE-ENTRY PERIOD:

Wear protective clothing if in contact with the crop before the spray has dried.

18 PROTECTIVE CLOTHING:

Overalls, boots and washable hat. Use gloves and face shield when handling the concentrate.

19 SOIL:

Soil texture:

Soil pH:

Soil organic matter:

Soil moisture at application:

20 MODE OF ACTION:

A group B, ALS (acetolactate synthase) inhibitor.

Uptake and translocation:

Mainly absorbed through leaves with a little root absorption. Translocated.

Physiological effects:

Growth stops soon after application but eventual death of the plants may be delayed until drying conditions occur.

Residual Life and Breakdown:

Broken down mainly by microbes in soil with a half life of about 3 weeks. In water it is mainly broken down by sunlight with a half life of about a month.

21 SELECTIVITY:

Crop tolerance:

Varietal sensitivities:

Effect on Clover Species:

Damaging.

Effect on Medic Species:

Damaging.

Effect on Lucerne:

Damaging.

Effect on Native Plants:

22 DISEASE AND INSECT EFFECTS:

23 PLANT SYMPTOMS:

Cessation of growth and discolouration of plants followed by collapse and desiccation with the onset of drying conditions which may be many weeks after treatment.

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

Low mammalian toxicity.

Details:

Poison schedule: S5

Mammalian toxicity: Low.

Acute oral LD50: 2811 mg/kg (rat), [For comparison table salt is 3000 mg/kg]

Acute dermal LD50: > 2000 mg/kg (rabbit).

Skin: Non irritating. Not a sensitiser.

Eye: Moderately irritating.

Vapour inhalation: Low toxicity. LC50 >3260 mg/L air (rat).

Chronic oral toxicity: NOEL mg/kg for two years.

Not carcinogenic, mutagenic or teratogenic in animal studies (i.e. does not cause cancer or reproductive problems in animal tests).

Acceptable Daily Intake (ADI):

Other Species:

Very toxic to some aquatic plants and algae. Moderately toxic to fish and aquatic invertebrates. Low toxicity to mammals, birds and earthworms.

Birds: toxicity.

Fish: Moderate toxicity LC50 > 72.4 mg/L, 96 hour, rainbow trout for product.

Invertebrates: Moderate toxicity. EC50 115 mg/L, 48 hour, Daphnia magna for product.

Bees: toxicity.

Arthropods: toxicity.

Earthworms:

Algae: Toxic. EC50 0.19 mg/L, 72 hour, Desmodesmus subspicatus for ethoxysulfuron.

Aquatic plants: Highly toxic. EC50 0.24 ug/L Lemma gibba for ethoxysulfuron.

Accumulation:

25 TOXICITY SYMPTOMS:

26 FIRST AID:

If SWALLOWED: Wash out mouth with water. Do NOT give anything by mouth to a semiconscious or unconscious patient. Do NOT induce vomiting.

If in EYES: Hold eyelids open and wash eyes with plenty of water for 5 minutes, remove contact lenses if present and wash for a further 10 minutes. See a doctor if symptoms persist.

If on SKIN: Remove contaminated clothing. Wash skin thoroughly with soap and water.

If INHALED: Remove patient to fresh air. If breathing stops then start artificial respiration. See a doctor if symptoms persist.

Advice to doctor: Treat symptomatically.

Ethoxysulfuron is a sulfonylurea herbicide of relatively low toxicity.

Symptoms:

There are no reports of poisonings in humans. Decreased activity, irregular breathing and laboured breathing may occur. Although ethoxysulfuron is a sulfonylurea compound, it does not influence glucose metabolism.

Treatment:

As there is no antidote, treatment has to be symptomatic and supportive. Gastric lavage may not be necessary due to the low toxicity of the compound. However, administration of activated charcoal and sodium sulphate is advisable with significant ingestions.

Contact the Poisons Information Centre on 131126.

27 ENVIRONMENTAL FATE:

Half life in soil: 18-20 days in biologically active soils. Most breakdown is due to microbial activity.

Half life in water: Stable in water. Degraded by sunlight in natural waters with a half life of 31 days.

It has an EPA classification for soil mobility that ranges from

It has a leaching index of . (for comparison, trifluralin is 0-1 and chlorsulfuron is 25-30). Weakly to moderately bound by soils.

Ground water contamination:

Accumulation in milk and tissues:

pH stability:

Photolysis rate:

Hydrolysis half life:

Biodegradation rate:

Bioconcentration factor (BCF):

28 REGISTERED CROPS:

See HerbiGuide Species Solution tab.

29 REGISTERED WEEDS:

See HerbiGuide Species Solution tab.

30 REGULATION AND LEGAL:

UN number: 3077.

CAS numbers:

OPP Chemical Code:

Hazchem code: 2Z.

NOHSC classification: Hazardous.

Land transport:

Dangerous goods class (ADG): Not a dangerous good.

Sea transport:

Proper shipping name: Class 9 Dangerous Good, ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (ethoxysulfuron mixture), UN 3077, Packing Group III, Marine Pollutant, Hazchem Code 2Z.

International Maritime Dangerous Goods Code (IMDG): Marine pollutant.

Class: 9

Packaging group: III

EPG:

Risk phrases: R36 - Irritating to eyes.

Safety phrases:

31 PROPERTIES:

Colour: Fine brown granules.

Odour: Slight acidic odour.

Form:

Chemical name:

Empirical formula:

IUPAC:

CAS:

Water solubility: disperses in water.

Oil solubility:

Octanol:Water ratio: LogPow = 2.59 at 25 C at pH 5.

Soil organic carbon absorption coefficient (Koc):

Vapour Pressure: 6.6 x 10-2 mPa.

Vapour density: NA

Dissociation constant: pKa

Melting point: 144-147 C.

Boiling point: Solid.

Molecular weight:

Bulk density: 0.57 g/mL

Specific gravity:

Viscosity: CPS.

pH: 8.2 (1% water solution)

Flammability:

Flashpoint: NA.

Autoignition: 363 C.

Corrosivity:

Shelf Life: years.

(When Stored under Ideal Conditions)

32 SPILLS:

Extinguish possible sources of ignition as dust can form an explosive mixture.

Sweep up and avoid dust. Dampen if necessary. If waterways or drains contaminated then advise local water authority.

33 FIRE:

Extinguish with water spray, foam. Do NOT use carbon dioxide, dry agent or high volume water jet. Contain fire fighting water to prevent it entering waterways or drains.

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

34 COMMENTS:

35 REFERENCES:

Bayer (2008) Hero Label and MSDS.

Acknowledgments:

Collated by HerbiGuide. For more information see www.herbiguide.com.au or phone 08 98444064.