Methiocarb 750


4. ACTIVE INGREDIENTS: Methiocarb 750g/kg

5. COST: $330.00 per L or kg.

6. CHEMICAL GROUP: 1A.

7. RELATED PESTICIDES:

CARBARYL 500g/L
CARBARYL 800g/kg
Methiocarb 20g/kg
Methiocarb 750g/kg
METHOMYL 225g/L
PIRIMICARB 500g/kg
THIODICARB 375g/L or 800g/kg

8. GENERAL DESCRIPTION:

A moluscicide

9. APPLICATION METHODS AND TIPS:

Ensure thorough coverage. For slugs and snails best results with night spraying.

10. ADJUVANTS, WETTERS, OILS:

None recommended

11. EQUIPMENT:

High volume boom, air misters or hand leads.

12. SPRAYER WASH OUT AND DECONTAMINATION:

13. WATER OR CARRIER DATA:

Apply in high volumes of water of at least 500 L/ha.

14. WEATHER:

Apply in fine weather. Irrigation or rain after spraying may reduce levels of control and respraying may be required.

15. RAINFASTNESS:

16. SOIL:

17. PLANT HEALTH and OTHER EFFECTS:

Good crop safety with no records of damage. Some ornamentals may be sensitive under some conditions.

18. WITHHOLDING PERIODS:

Grapes - Harvest - 9 weeks.
Citrus - Harvest - 6 weeks.
Grapes - Harvest - 9 weeks.
Citrus - Harvest - 6 weeks.

19. PLANT BACK PERIODS or RECROPPING INTERVALS:

20. MODE OF ACTION:

Cholinesterase inhibitor. Carbamate

21. PESTICIDE RESISTANCE:

Some species may be resistant or develop resistance with continued application. Rotate with products from alternative groups.

22. TOXICITY:

Poison schedule - S7
Summary: Poisonous if swallowed or absorbed through skin or lungs.
Details:
Poison schedule - S7
Mammalian toxicity -
Acute oral LD50 - 23-140 mg product/kg (rats), about 20 mg methiocarb/kg [For comparison table salt is 3000 mg/kg]
Acute dermal LD50 - >5000 mg/kg (rabbit).
Skin - May irritate skin. Non irritant(rabbit). Slight irritant to mucous membranes. Not a skin sensitiser.
Eye - May irritate eyes
Vapour inhalation - very poisonous LC50 - 0.443-1.208 mg/L air (rat).
Chronic oral toxicity NOEL - ppm for two years.
Not mutagenic or teratogenic (i.e. does not cause cancer). Methiocarb is considered to be a developmental toxicant in the USA..
Acceptable Daily Intake (ADI) -

23. TOXICITY SYMPTOMS:

Symptoms usually occur 1-3 hours after exposure. Onset of symptoms may be delayed and may persist for several weeks.
Mild intoxication may cause headache, blurred vision, weakness, sweating, mild chest pain, nausea and vomitting.
Severe intoxication may cause cyanosis(blueness of skin), muscular twitching, spasms, miosis(pinpoint pupils) and respiratory paralysis.
May irritate eyes.

24. FIRST AID:

If SWALLOWED - give one atropine tablet every 5 minutes until dryness of the mouth occurs (Ring 13 11 26 Poisons Information Centre to confirm atropine administration). Go to a hospital quickly. Don't give anything by mouth to a semi conscious or unconscious person.
If in EYES - Irrigate for 15 minutes with plenty of water.
If on SKIN - Rinse with plenty of water, remove contaminated clothing, wash with soap and water. Give one atropine tablet every 5 minutes until dryness of the mouth occurs (Ring 13 11 26 Poisons Information Centre to confirm atropine administration). Go to a hospital quickly.
If INHALED - Remove patient to fresh air. Give one atropine tablet every 5 minutes until dryness of the mouth occurs (Ring 13 11 26 Poisons Information Centre to confirm atropine administration).
If patient has symptoms or is concerned contact a doctor immediately. Go to a hospital quickly.
Advice to doctor - Treat symptomatically. Antidote is atropine sulfate. Atropine shoud not tbe given to a cyanosed person. Oximes are contraindicated. Monitor cardiac, respiratory and central nervous system functions. Monitor red blood cell and plasma cholinesterase levels. Administer oxygen if nesessary. Watch for pulmonary oedema and delayed neurological symptoms.
Contraindications - Oximes, adrenergic derivatives. Never give patient morphine, theophylline or theophylline-ethylenediamine. Large amounts of intravenous fluids are generally contraindicated because of the threat of pulmonary oedema..
Call Poisons Information Centre on 13 11 26

25. PROTECTIVE CLOTHING:

Safety goggles and face shield.
Elbow length PVC gl;oves.
Cotton overalls and washable hat.
Boots.

26 RE ENTRY PERIODS and OTHER SAFETY ISSUES:

After spray dries.

27. PROPERTIES:

Product appearance - White to yellow powder. Weak characteristic odour.
Shelf Life -
Product Flammability - Not readily combustible. Fine dust may form explosive mixtures in air.
Half life in water - days at pH5 and 35 C.
Water solubility at 25 C. - disperses in water. Methiocard is practically insoluble in water.
Oil solubility -
Octanol:Water ratio at 20 C. - LogPow = 3.08.
Vapour Pressure at 20 C. - 0.015 mPa (methiocarb)
Dissociation constant - pKa.
Melting point - 119C methiocarb.
Boiling point -
Molecular weight -
Density - 560-680 mL/100g
Unstable in highly alkaline media.

28. ENVIRONMENTAL FATE:

Summary - Dangerous to bees, fish, birds and animals. Harmful to aquatic organisms..
Birds - High toxicity. LD50 5-10 mg/kg. Don't spray areas where poultry graze as it toxic and is a bird repellent.
Fish - High toxicity LC50 0.65-1.1 mg/L (96 hr).
Invertebrates - High toxicity. EC50 0.007 mg/L (Daphnia magna 48 hr)
Algae - IC50 2.2 mg/L (Green algae growth rate 72 hr)
Bees - High toxicity.
It has a short half life in soil and degrades rapidly. Photodegrades. DT50 - 6-16 days.
It has an EPA classification for soil mobility that ranges from
Ground water contamination
Accumulation in milk and tissues.

29. COMPATIBILITY:

See HerbiGuide for compatibility with other herbicides, insecticides and fungicides.
See HerbiGuide for a full list of pesticide compatibilities.
Compatible with most insecticides and fungicides.
Not compatible with alkaline products like Boreaux mixture and lime sulfur.

30. REGISTERED CROPS, INSECTS and DISEASES.

See HerbiGuide Species Solutions Tab for registered uses.

31. GOVERNMENT AND REGULATORY INFORMATION:

Dangerous Goods Class - 6.1 Dangerous good. "CARBAMATE PESTICIDE, SOLID, TOXIC (contains methiocarb)
Hazchem Code - 2X
Packaging Group - III
Initial Emergency Response Guide IERG -
UN Number - 2757
NOHSC Classification and phrases - Hazardous. Toxic by inhalation and if swallowed. R23/25
CAS No. - 2032-65-7
Class P marine pollutant.

32. References:

Acknowledgments:

Collated by HerbiGuide. Phone 08 98444064 or www.HerbiGuide.com.au for more information.