Pyraflufen

1 Trade nameManufacturerForm
ECOPAR HERBICIDESIPCAM PACIFIC AUSTRALIA PTY LTDSUSPENSION CONCENTRATE
ETEE DEFOLIANTSIPCAM PACIFIC AUSTRALIA PTY LTDEMULSIFIABLE CONCENTRATE
Sledge HerbicideSIPCAM PACIFIC AUSTRALIA PTY LTDEMULSIFIABLE CONCENTRATE

2 PRICE:

$44.55/L

3 ACTIVE INGREDIENTS: Pyraflufen-ethyl 25g/L (20-40g/L)

4 CHEMICAL GROUP: G

Triazolinone or phenylpyrazole group.

5 RELATED HERBICIDES:

BlazerAcifluorfen 224g/L
ButafenacilButafenacil 100g/L
Carfentrazone 240Carfentrazone-ethyl 240g/L
Carfentrazone 400Carfentrazone-ethyl 400g/kg
FlumioxazinFlumioxazin 500g/kg
OxyfluorfenOxyfluorfen 240g/L (or 500g/L)
PyraflufenPyraflufen-ethyl 25g/L (20-40g/L)
Saflufenacil 700Saflufenacil 700g/kg

6 GENERAL DESCRIPTION:

A rapidly absorbed, fast acting, contact, non residual, post emergent herbicide for the control of broad leaved weeds in grass crops or legumes. It also has some action on some grasses.

7 APPLICATION METHODS AND TIPS:

Best results on young actively growing weeds in moist soil in fine weather.
Don't apply to stressed plants.
Keep spray mix agitated.
Use higher water rates on dense weed infestations.
Keep droplet density greater than 30/cm2.

8 WEATHER:

Rainfast in 6 hours.
Frost effects: Poorer results on frost affected weeds and in frosty weather
Wind: Avoid spraying within 200 m upwind of hormone sensitive plants when mixed with MCPA. Wind speeds of 2-20 kph should have less than 100 m drift.
Inversions: Avoid spraying in inversion conditions to reduce the risk of damage to off target species by drift.
Temperature:
Delta T and relative humidity: Avoid application when Delta T is greater than
Soil moisture at application: Best results when soil is moist at spraying.

9 ADJUVANTS:

Wetting agents: Don't use wetting agents for post emergence selective applications.
Spray oils: Don't use spray oils for post emergence selective applications. Spray oils often added for non selective applications..

10 WATER QUALITY:

Hard water:
Salty water:
Colloids:
pH:
Tank life: Keep agitated. Use promptly and avoid leaving spray in tank overnight.

11 COMPATIBILITY:

Trace elements.
See HerbiGuide Compatibilities button.

12 EQUIPMENT:

Boom sprays:

Carrier volume: 70-100 L/ha recommended on the label. Use finer nozzles if using carrier volumes down to 30 L/ha and ensure that droplet density is more than 30 droplets/cm2.
Nozzles: Flat fan.
Pressure: 150-400 kPa.
Use equipment that provides constant agitation while spraying.

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 (e.g. 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 then soak in 500 mL household ammonia in 10 L water for 30 minutes.
Rinse sprayer with soapy water (e.g. 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. Fill with 1% solution of ammonia and leave for several hours. Triple rinse with water. Or use a commercial spray tank and equipment cleaner.
Rinse nozzles and filters in water and replace.
Don't use chlorine based cleaners.

14 HERBICIDE RESISTANCE:

Tolerant plants are expected to occur and may dominate the weed population after repeated applications.
In 2020 there was no known resistance.

15 REPLANTING INTERVALS:

CropTime
AllNo replanting period required.
Check replanting intervals for MCPA or partner pesticides if tank mixed.

16 WITHHOLDING PERIODS:

CropTypeTime
BarleyGrazing14 days
BarleyHarvestNot required
CerealsGrazing14 days
CerealsHarvestNot required
CottonGrazingDo not feed to livestock
CottonHarvest7 days
Faba beansGrazing28 days
Faba beansHarvestNot required
PasturesGrazing7 days
Pea; FieldGrazing28 days
Pea; FieldHarvestNot required
TriticaleGrazing14 days
TriticaleHarvestNot required
VetchGrazing28 days
VetchHarvestNot required
WheatGrazing14 days
WheatHarvestNot required
Other vegetationGrazing7 days
Check withholding periods for MCPA or partner pesticides if tank mixed.

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:

20 MODE OF ACTION:

Aryl triazolinone or phenyl pyrazole group. Protox inhibitor. Disrupts membranes.

Uptake and translocation:

Contact action and rapidly absorbed but not translocated.

Physiological effects:

Interferes with chlorophyll synthesis by inhibiting the protoporphyrinogen IX oxidase (Protox) enzyme in chloroplasts. This leads to accumulation of protoporphyrinogen IX resulting in peroxidation of foliar cell membrane lipid under the presence of light, with subsequent cell membrane destruction and necrosis.

Residual Life and Breakdown:

No effective residual action.

21 SELECTIVITY:

Crop tolerance:

Varietal sensitivities:

Effect on Clover Species:

Little effect on clover.

Effect on Medic Species:

Little effect on medics.

Effect on Lucerne:

Effect on Native Plants:

22 DISEASE AND INSECT EFFECTS:

23 PLANT SYMPTOMS:

Weeds usually show symptoms within 1-7 days of spraying. Yellowing followed by browning of leaves usually occurs within 1-3 days followed by death of the plant within 10-21 days. Recovery and regrowth from the base of the plant may occur.

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

Low oral, dermal and inhalation toxicity for mammals.
Highly toxic to algae and some aquatic organisms.

Details:

Poison schedule: S5
Mammalian toxicity:
Acute oral LD50: Pyraflufen-ethyl >5000 mg/kg (rat), [For comparison table salt is 3000 mg/kg]
Acute dermal LD50: Pyraflufen-ethyl > 2000 mg/kg (rat).
Skin: Product may cause sensitisation. Active not irritating in rabbits or sensitising in Guinea pigs.
Eye: Product may irritate eyes. Active not irritating in rabbits.
Vapour inhalation: May irritate mucous membranes and respiratory tract. LC50 Pyraflufen-ethyl > 5.03 mg/L air (rat). Harmful if inhaled. May be fatal if swallowed and enters airways.
Chronic oral toxicity: NOEL mg/kg for two years.
Not carcinogenic (i.e. does not cause cancer or reproductive problems in animal tests).
May damage fertility or the unborn child.
Acceptable Daily Intake (ADI): 0.2 mg/kg bw/day.
No Observable Effect Level (NOEL): 20 mg/kg bw/day

Other Species:

Birds: Low toxicity. LD50 >200 mg/kg (Mallard Duck and Bobwhite Quail)
Fish: toxicity 96hr LC50 (rainbow trout): <1 mg/L (for Pyraflufen-ethyl). NOEC >100 ug/L.
Invertebrates: Probably toxic.
Bees: toxicity.
Arthropods: toxicity.
Earthworms:
Algae: High toxicity.
Accumulation:

25 TOXICITY SYMPTOMS:

Swallowing can cause vomiting and gastrointestinal irritation.
May cause drowsiness and dizziness.

26 FIRST AID:

If SWALLOWED: Do NOT give anything by mouth to a semiconscious or unconscious patient. Do NOT induce vomiting. Give a glass of water to sip. See a doctor if symptoms develop.
Aspiration hazard - this material can enter lungs during swallowing or vomiting and cause lung inflammation and damage. Swallowing may result in irritation of the gastrointestinal tract.
If in EYES: Irrigate with plenty of water.
If on SKIN: Rinse with plenty of water, remove contaminated clothing, wash with soap and water. If redness, swelling, blistering or irritation occurs then see a doctor.
If INHALED: Remove patient to fresh air. Breathing in vapour will produce respiratory irritation. See a doctor if effects persist.
Advice to doctor: Treat symptomatically. Effects may be delayed. Delayed pulmonary oedema may result.
Contact the Poisons Information Centre on 131126.

27 ENVIRONMENTAL FATE:

Readily biodegradable.
Half life in soil:
Half life in water: days at pH5 and 35 C.
It has an EPA classification for soil mobility that ranges from
Ground water contamination
Accumulation in milk and tissues.
pH stability:
Photolysis rate:
Hydrolysis half life:
Biodegradation rate:

28 REGISTERED CROPS:

See HerbiGuide Species Solution tab.

29 REGISTERED WEEDS:

See HerbiGuide Species Solution tab.

30 REGULATION AND LEGAL:

UN number:
CAS numbers: 129630-19-9
Hazchem code: Not applicable.
NOHSC classification: Hazardous.
Land transport:
Dangerous goods class (ADG): Not classified as a dangerous good. NON-DANGEROUS GOODS.
Sea transport:
Proper shipping name:
International Maritime Dangerous Goods Code (IMDG): Not classified as a dangerous good.
Class:
Packaging group:
EPG:
Air transport:
IATA: Not classified as a dangerous good. NON-DANGEROUS GOODS.

Hazchem code: Not applicable.
NOHSC classification: Hazardous.
SWA classification: HAZARDOUS CHEMICAL.
Classification of the chemical:
Flammable liquids - Category 4
Aspiration hazard - Category 1
Skin Irritation - Category 2
Eye Irritation - Category 2A
Specific target organ toxicity (single exposure) - Category 3
Toxic to Reproduction - Category 1B
Acute Aquatic Toxicity - Category 3
Chronic Aquatic Toxicity - Category 3
Hazard Statements:
H227 Combustible liquid.
H304 May be fatal if swallowed and enters airways.
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
H360 May damage fertility or the unborn child.
Records: Are required within 24 hours and kept for 2 years.
Buffer zones:
Do not apply to areas less than 60 metres upwind from vegetation areas and land that is producing livestock feed.
Do not apply to areas less than 60 metres upwind from aquatic areas.

31 PROPERTIES:

Colour: White milky liquid or pale yellow liquid.
Odour: Slight characteristic odour.
Form: Liquid. Soluble concentrate.
Chemical name: Pyraflufen-ethyl. Ethyl 2-chloro-5-(4-chloro-5difluoromethoxy-1-methylpyrazol-3-yl)-4-fluorophenoxyacetate (IPUAC).


CAS 129630-19-9
Empirical formula: C15H13Cl2F3N2O4
Water solubility: Product miscible in water. Active 0.0-82 mg/L.
Oil solubility of active: Heptane: 234 mg/L, Methanol: 7.39 g/L, Dichloromethane: 100-111 g/L, Acetone: 167-182 g/L, P-xylene: 41.7-43.5 g/L, Ethyl acetate: 105-111 g/L
Octanol:Water ratio: LogPow = 3.49
Soil organic carbon absorption coefficient (Koc):
Vapour Pressure: 1.6 x 10-8 Pa at 25 C.
Henry's Law constant 8.1 x 10-5 Pa.m3/mol
Relative Vapour Density: >1 (air=1)
Dissociation constant: Does not dissociate.
Melting point: 126.4-127.2 0C for active.
Boiling point: about 100 C.
Molecular weight: 413.2
Bulk density: 1.565 g/cm-3 for active at 24 0C.
Specific gravity: 1.02-1.03.
pH: 6.5-7. 6.84 at 24 0C. 5.5 (1% water suspension, 20°C)
Flammability: Some formulations not flammable. Not combustible. Dried residues may burn and emit toxic fumes. Flashpoint: No flash at temperatures up to 100 C. Not explosive.
Some formulations a combustible liquid. May burn and emit toxic fumes. Vapour may travel a considerable distance to source of ignition and flash back. Flashpoint: 700C.
Autoignition: C.
Corrosivity:
Oxidising properties: Not oxidising.
Shelf Life: 3 years. (at least 26 months).
(When Stored under Ideal Conditions)
Temperature stability: No loss after 14 days at 54 0C. No separation of suspended material at low temperatures.
Foaming: Non foaming.
Viscosity: Non Newtonian.
Surface tension: 39.2 mN/m for product. 45.9 mN/m at 1:200 dilution. 74.2 mN/m for active at 20 0C
Suspensibility: 97.6% at 1:200 dilution.
Particle size: <38 um.

32 SPILLS:

Absorb spill with earth, sand, clay or absorbent material.
Ventilate area after cleanup. Slippery when spilt. Wash area with water plus detergent and dispose of waste water in a chemical pit.

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:

35 REFERENCES:

Summit Agro (2007) Label 60493/0707.
Summit Agro (2007) MSDS June 2007.
Sipcam (2019) MSDS.
Sipcam (2020) Label 83053-118974.

Acknowledgments:

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