MSMA 800
1 Trade nameManufacturerForm
CHEMAG MSMA POST EMERGENCE HERBICIDEIMTRADE AUSTRALIA PTY LTDLD
DACONATE POST EMERGENCE HERBICIDECROP CARE AUSTRALASIA PTY LTDLD
RAMPAGE POST EMERGENCE HERBICIDECROP CARE AUSTRALASIA PTY LTDAC



Barmac and Agspray make a product with less active ingredient.
2 PRICE: $14.08/L


3 ACTIVE INGREDIENTS: MSMA 800 g/L

4 CHEMICAL GROUP: Error! Reference source not found.5 RELATED HERBICIDES:

DSMA 550DSMA 550g/kg
Mataven-LFlamprop-m-methyl 75g/L or 90g/L
MSMA 800MSMA 800 g/L


6 GENERAL DESCRIPTION:

A leaf absorbed herbicide for the control of grasses and burrs in Couch, Buffalo grass, Cotton and Sugar Cane.

7 APPLICATION METHODS AND TIPS:

Best results when applied under hot dry conditions when the air temperature is above 300C. However, under these conditions crop damage is also more likely and turf may show excessive burn. A split application at half rates 7-10 days apart usually gives better weed control with less effect on the crop.

Repeat applications in 3-6 weeks for perennial grasses and nut grass.

9 ADJUVANTS:

Generally not required as there is usually a wetting agent in the formulation.

10 WATER QUALITY:

Hard water:

Colloids:

pH:

Tank life:

11 COMPATIBILITY:

Trace elements.

14 HERBICIDE RESISTANCE:

18 PROTECTIVE CLOTHING:

Overalls, Safety shoes, safety glasses, gloves.

Where there is a risk of inhalation of the vapour wear an organic vapour respirator.

20 MODE OF ACTION:

Multiple sites of action.

Uptake and translocation:

Absorbed through leaves only.

Physiological effects:

Residual Life and Breakdown:

21 SELECTIVITY:

Crop tolerance:

Some sugar cane varieties are sensitive.

Varietal sensitivities:

Effect on Clover Species:

Effect on Medic Species:

Effect on Lucerne:

Effect on Native Plants:

22 DISEASE AND INSECT EFFECTS:

23 PLANT SYMPTOMS:

Weeds turn yellow to brown 3-7 days after spraying.

SECONDARY EFFECTS:

24 TOXICITY:

Summary:

One of the more toxic herbicides. Harmful if swallowed.

Details:

Poison Schedule - S7

Mammalian toxicity -

Acute oral LD50 - 102-14000 mg/kg (various species), [For comparison table salt is 3000 mg/kg]

Acute dermal LD50 - > 2500 mg/kg (rabbit).

Skin - Mild irritant.

Eye - Mild irritant.

Vapour inhalation - LC50 - > 20 mg/L air (rat).

Chronic oral toxicity NOEL - ppm for two years.

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

Organic arsenicals are generally less toxic than the inorganic forms.

Other Species -

Birds - toxicity.

Fish - toxicity LC50 > 51-167 ppm.

Invertebrates - Daphnia 48hr LC50 = 77.5 ppm.

Bees - LD 50 = 68 ug/bee. NOEL 36ug/bee.

25 TOXICITY SYMPTOMS:

Ingestion may cause nausea, headache, dizziness, stupor vomiting, diarrhoea, convulsions, paralysis or death.

Inhalation may cause nausea, headache, irritation to mucous membranes, irritation to respiratory tract.

Long term exposure may result in a salty taste in the mouth, burning throat, stomach pains and intestinal pains.

26 FIRST AID:

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

If Swallowed - Contact a doctor immediately. Rinse mouth with water. Give plenty of water to drink. Induce vomiting preferably using Ipecac syrup, if more than 15 minutes from medical help.

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. Keep warm and at rest until fully recovered.

Advice to Doctor

Treat symptomatically.

27 ENVIRONMENTAL FATE:

It has a half life in soil of 55 days. It is broken down by soil bacteria.

It has an EPA classification for soil mobility that ranges from

Ground water contamination

Replanting intervals

Accumulation in milk and tissues.

Bioconcentration occurs in aquatic organisms. Factors range from 0-17 for invertebrates and fish to 350 for marine oysters.

31 PROPERTIES:

Water solubility at 25 C. - Highly soluble.

Oil solubility - Usually low. Soluble in methanol.

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

Vapour Pressure at 25 C. -

Dissociation constant - pKa

Boiling point - 100 C.

Molecular weight -

Half life in water - days at pH5 and 35 C.

Reacts with strong oxidising and reducing agents.

33 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.

Numbered Data

4. Poison Schedule : 7

6. Product colour : Pink, slightly viscous liquid, with a pleasant fruity odour.

7. Product Flammability : Non combustible. Decomposes on heating and releases toxic arsine fumes.

8. Dangerous Goods Class : Not classed as a dangerous good.

9. Shelf Life :

12. Effect of Soil Texture on Herbicide : Little or none.

13. Effect of Soil pH on Herbicide : Little or none.

14. Effect of Soil Organic Matter on Herbicide : Little or none.

15. Mode of Action : Multiple sites.

16. Application Timing : Post emergence.

19. Weeds Controlled : Mainly grasses and monocots.

20. Effect on Crop : Often burns crop or turf.

21. Effect on Legume Species : Slight.

22. Soil Moisture at Application :

DRY - Ideal

MOIST - OK

WATERLOGGED - Avoid

23. Frost Effects :

24. Frost Free Days Required After Application :

25. Effect of Application Water Quality on Herbicide :

Saline Water -

Soil Colloids -

26. Recommended Water Volume : High volume.

27. Nozzle Type : Flat fan.

28. Recommended Nozzle Pressure :

29. Recommended Filter Size : Mesh size as suitable for nozzle being used.

30. Recommended Wetter - None.

31. Other Additives : None.

32. Rain Fastness : 3 hours.

33. Time Interval Before Effect is Noticed : 3-7 days.

34. Weed Symptoms : Yellowing and reddening of leaves.

35. Effect of Herbicide/Disease Interaction on Crop :

36. Withholding Period : 60 days.

37. Plant-Back Period :
  1. Spray Tank Clean-Up : Drain tank and flush with clean water for a minimum of 10 minutes. Fill the tank with clean water and flush.
Remove the nozzles and screens and clean separately.

39. Other Comments :

Numbered data adapted from "Crop Herbicide Information"

by A.J. Chambers.

Acknowledgments:

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