MATERIAL SAFETY DATA SHEET
Product Name: Genfarm Muron 600 WG Herbicide
This revision issued: August, 2005 Page: 1 of 5
Section 1 - Identification Of Chemical Product And Company
Genfarm Crop Protection Pty Ltd Phone: (02) 9889 5400
Suite 3, Level 1, 64 Talavera Road Fax: (02) 9889 5411
Macquarie Park, NSW, 2113
Substance: Metsulfuron methyl is a sulfonylurea derived herbicide ingredient.
Genfarm Muron 600 WG Herbicide
Trade Name:
Product Use: Agricultural herbicide for use as described on the product label.
Creation Date: December, 2004
Revision Date: August, 2005
Section 2 - Hazards Identification
Statement of Hazardous Nature
This product is classified as: Not classified as hazardous according to the criteria of NOHSC Australia.
Not a Dangerous Good according to the Australian Dangerous Goods (ADG) Code.
Risk Phrases: Not Hazardous - No criteria found.
Safety Phrases: Not Hazardous - No criteria found.
SUSDP Classification: None allocated.
ADG Classification: None allocated. Not a Dangerous Good.
UN Number: None allocated
Emergency Overview
Physical Description & colour: Off white granulated solid.
Odour: No odour.
Major Health Hazards: Systemic poisoning by sulfonylurea based compounds is unlikely, unless large quantities
have been ingested. No accounts of poisoning by Metsulfuron-methyl are currently available.
Potential Health Effects
Inhalation
Short term exposure: Significant inhalation exposure is considered to be unlikely. Available data indicates that this
product is not harmful. However product may be mildly irritating, although unlikely to cause anything more than mild
transient discomfort.
Long Term exposure: No data for health effects associated with long term inhalation.
Skin Contact:
Short term exposure: Available data indicates that this product is not harmful. It should present no hazards in
normal use. However product may be mildly irritating, but is unlikely to cause anything more than mild discomfort
which should disappear once contact ceases.
Long Term exposure: No data for health effects associated with long term skin exposure.
Eye Contact:
Short term exposure: Exposure via eyes is considered to be unlikely. This product may be mildly irritating to eyes,
but is unlikely to cause anything more than mild discomfort which should disappear once product is removed.
Long Term exposure: No data for health effects associated with long term eye exposure.
Ingestion:
Short term exposure: Significant oral exposure is considered to be unlikely. This product is unlikely to cause any
irritation problems in the short or long term.
Long Term exposure: No data for health effects associated with long term ingestion.
Carcinogen Status:
NOHSC: No significant ingredient is classified as carcinogenic by NOHSC.
NTP: No significant ingredient is classified as carcinogenic by NTP.
Issued by: Genfarm Crop Protection Pty Ltd Phone: (02) 9889 5400
MATERIAL SAFETY DATA SHEET
Product Name: Genfarm Muron 600 WG Herbicide
This revision issued: August, 2005 Page: 2 of 5
IARC: No significant ingredient is classified as carcinogenic by IARC.
Section 3 - Composition/Information on Ingredients
TWA (mg/m3) STEL (mg/m3)
Ingredients CAS No Conc,%
Metsulfuron methyl 74223-64-6 60 not set not set
Other non hazardous ingredients secret to 100 not set not set
This is a commercial product whose exact ratio of components may vary slightly. Minor quantities of other non
hazardous ingredients are also possible.
The TWA exposure value is the average airborne concentration of a particular substance when calculated over a normal 8 hour working day for a 5
day working week. The STEL (Short Term Exposure Limit) is an exposure value that should not be exceeded for more than 15 minutes and should
not be repeated for more than 4 times per day. There should be at least 60 minutes between successive exposures at the STEL. The term "peak "is
used when the TWA limit, because of the rapid action of the substance, should never be exceeded, even briefly.
Section 4 - First Aid Measures
General Information:
You should call The Poisons Information Centre if you feel that you may have been poisoned, burned or irritated by
this product. The number is 13 1126 from anywhere in Australia (0800 764 766 in New Zealand) and is available at all
times. Have this MSDS with you when you call.
Inhalation: First aid is not generally required. If in doubt, contact a Poisons Information Centre or a doctor.
Skin Contact: Irritation is unlikely. However, if irritation does occur, flush with lukewarm, gently flowing water for 5
minutes or until chemical is removed. If in doubt obtain medical advice.
Eye Contact: No effects expected. If irritation does occur, flush contaminated eye(s) with lukewarm, gently flowing
water for 5 minutes or until the product is removed. Obtain medical advice if irritation becomes painful or lasts more
than a few minutes.
Ingestion: If product is swallowed or gets in mouth, wash mouth with water and give some water to drink. If
symptoms develop, or if in doubt contact a Poisons Information Centre or a doctor.
Section 5 - Fire Fighting Measures
Fire and Explosion Hazards: There is no risk of an explosion from this product under normal circumstances if it is
involved in a fire. Fire decomposition products from this product may be toxic if inhaled. Take appropriate protective
measures.
Extinguishing Media: Preferred extinguishing media are carbon dioxide, dry chemical, foam, water fog.
Fire Fighting: When fighting fires involving significant quantities of this product, wear a splash suit complete with
self contained breathing apparatus.
Flash point: Not flammable.
Upper Flammability Limit: No data.
Lower Flammability Limit: No data.
Autoignition temperature: No data.
Flammability Class: No data.
Section 6 - Accidental Release Measures
Accidental release: Minor spills do not normally need any special cleanup measures. In the event of a major spill,
prevent spillage from entering drains or water courses. As a minimum, wear overalls, goggles and gloves. Suitable
materials for protective clothing include rubber, PVC. If there is a significant chance that dusts are likely to build up in
cleanup area, we recommend that you use a suitable Dust Mask.
Stop leak if safe to do so, and contain spill. Sweep up and shovel or collect recoverable product into labelled
containers for recycling or salvage, and dispose of promptly. Consider vacuuming if appropriate. Recycle containers
wherever possible after careful cleaning. Refer to product label for specific instructions. After spills, wash area
preventing runoff from entering drains. If a significant quantity of material enters drains, advise emergency services.
Full details regarding disposal of used containers, spillage and unused material may be found on the label. If there is
any conflict between this MSDS and the label, instructions on the label prevail. Ensure legality of disposal by
consulting regulations prior to disposal. Thoroughly launder protective clothing before storage or re-use. Advise
laundry of nature of contamination when sending contaminated clothing to laundry.
Issued by: Genfarm Crop Protection Pty Ltd Phone: (02) 9889 5400
MATERIAL SAFETY DATA SHEET
Product Name: Genfarm Muron 600 WG Herbicide
This revision issued: August, 2005 Page: 3 of 5
Section 7 - Handling and Storage
Handling: Keep exposure to this product to a minimum, and minimise the quantities kept in work areas. Check
Section 8 of this MSDS for details of personal protective measures, and make sure that those measures are followed.
The measures detailed below under "Storage" should be followed during handling in order to minimise risks to
persons using the product in the workplace. Also, avoid contact or contamination of product with incompatible
materials listed in Section 10.
Storage: Store in the closed original container in a dry, cool, well-ventilated area out of direct sunlight. Make sure
that the product does not come into contact with substances listed under "Incompatibilities" in Section 10. Check
packaging - there may be further storage instructions on the label.
Section 8 - Exposure Controls and Personal Protection
The following Australian Standards will provide general advice regarding safety clothing and equipment:
Respiratory equipment: AS/NZS 1715, Protective Gloves: AS 2161, Industrial Clothing: AS2919, Industrial Eye
Protection: AS1336 and AS/NZS 1337, Occupational Protective Footwear: AS/NZS2210.
TWA (mg/m3) STEL (mg/m3)
Exposure Limits
Exposure limits have not been established by NOHSC for any of the significant ingredients in this product.
The ADI for Metsulfuron methyl is set at 0.01mg/kg/day. The corresponding NOEL is set at 1mg/kg/day. ADI means
Acceptable Daily Intake and NOEL means No-observable-effect-level. Values taken from Australian ADI List, Dec
2003.
No special equipment is usually needed when occasionally handling small quantities. The following instructions are
for bulk handling or where regular exposure in an occupational setting occurs without proper containment systems.
Ventilation: No special ventilation requirements are normally necessary for this product. However make sure that
the work environment remains clean and that dusts are minimised.
Eye Protection: Eye protection is not normally necessary when this product is being used. However, if in doubt,
wear suitable protective glasses or goggles.
Skin Protection: The information at hand indicates that this product is not harmful and that normally no special skin
protection is necessary. However, we suggest that you routinely avoid contact with all chemical products and that you
wear suitable gloves (preferably elbow-length) when skin contact is likely.
Protective Material Types: There is no specific recommendation for any particular protective material type.
Respirator: If there is a significant chance that dusts are likely to build up in the area where this product is being
used, we recommend that you use a suitable Dust Mask.
Section 9 - Physical and Chemical Properties:
Physical Description & colour: Off white granulated solid.
Odour: No odour.
Boiling Point: Not available.
Freezing/Melting Point: No specific data. Active ingredient melts about 158掳C.
Volatiles: No specific data. Expected to be low at 100掳C.
Vapour Pressure: Negligible at 25掳C
Vapour Density: No data.
Specific Gravity: No data.
Water Solubility: Dispersible.
pH: No data.
Volatility: Very low.
Odour Threshold: No data.
Evaporation Rate: No data.
Coeff Oil/water distribution: No data
Autoignition temp: No data.
Section 10 - Stability and Reactivity
Reactivity: This product is unlikely to react or decompose under normal storage conditions. However, if you have
any doubts, contact the supplier for advice on shelf life properties.
Conditions to Avoid: Store in the closed original container in a dry, cool, well-ventilated area out of direct sunlight.
Incompatibilities: strong oxidising agents.
Issued by: Genfarm Crop Protection Pty Ltd Phone: (02) 9889 5400
MATERIAL SAFETY DATA SHEET
Product Name: Genfarm Muron 600 WG Herbicide
This revision issued: August, 2005 Page: 4 of 5
Fire Decomposition: Carbon dioxide, and if combustion is incomplete, carbon monoxide and smoke. Nitrogen and
its compounds, and under some circumstances, oxides of nitrogen. Occasionally hydrogen cyanide gas. Oxides of
sulfur (sulfur dioxide is a respiratory hazard) and other sulfur compounds. Most will have a foul odour. Water. Carbon
monoxide poisoning produces headache, weakness, nausea, dizziness, confusion, dimness of vision, disturbance of
judgment, and unconsciousness followed by coma and death.
Polymerisation: This product will not undergo polymerisation reactions.
Section 11 - Toxicological Information
Toxicity: Acute Toxicity: Metsulfuron methyl has very low toxicity in mammals. LD50 is > 5,000 mg/kg in rats. It has
low dermal toxicity in tests with rabbits, with an LD50 > 2,000 mg/kg, and low inhalation toxicity in rats, with a median
lethal concentration in air of greater than 5 mg/liter air. Moderate but reversible eye irritation has been seen in rabbits,
and mild skin irritation has been observed in guinea pigs. No skin sensitization has been observed in guinea pigs.
Chronic Toxicity: A 2-year feeding study in rats resulted in a No Observable Effects Level (NOEL) of 25.0 mg/kg/day
(or 500 ppm in feed), based on decreased body weights seen at 250 mg/kg/day (5,000 ppm) which was the highest
dose tested. EPA has based its reference dose (0.25 mg/kg/day) on this study.
Reproductive Effects: Multigeneration studies in rats did not result in any reproductive effects at the highest doses
tested of 250 mg/kg/day.
Teratogenic Effects: Metsulfuron-methyl did not cause developmental abnormalities to offspring of rats and rabbits
fed 1000 mg/kg/day and 700 mg/kg/day respectively during gestation. These doses represent the highest dose tested
for each experiment.
Mutagenic Effects: The weight of evidence presented by a battery of tests to measure mutagenicity and other
adverse effects on DNA indicates that Metsulfuron-methyl is neither mutagenic nor genotoxic.
Carcinogenic Effects: Negative for rats and mice in laboratory tests, but studies may not have been at maximum
tolerated dose.
Organ Toxicity: Metsulfuron-methyl is a moderate eye irritant.
Fate in Humans and Other Animals: The chemical is broken down quickly and eliminated from the body. In tests with
radio labelled Metsulfuron-methyl in rats, the excretion half-lives ranged from 9 to 16 hours and 23 to 29 hours for rats
administered low and high doses, respectively. It did not bioaccumulate in fish.
Section 12 - Ecological Information
Breakdown of Chemical in Soil and Groundwater: The breakdown of Metsulfuron-methyl in soils is largely
dependant on soil temperature, moisture content, and pH. The chemical will degrade faster under acidic conditions,
and in soils with higher moisture content and higher temperature. The chemical has a higher mobility potential in
alkaline soils than in acidic soils, as it is more soluble under alkaline conditions. Metsulfuron-methyl is stable to
photolysis, but will break down in ultraviolet light. Half-life estimates for Metsulfuron-methyl in soil are wide ranging
from 14 - 180 days, with an overall average of reported values of 30 days. Reported half-life values (in days) for soil
include: clay - 178 ; sandy loam - 102 ; clay loam - 70 , 14-28 , 14-105 ; silty loam - 120-180.
Breakdown of Chemical in Vegetation: Metsulfuron-methyl is rapidly taken up by plants at the roots and on foliage.
The chemical is translocated throughout the plant, but is not persistent. It is broken down to non-herbicidal products in
tolerant plants.
Section 13 - Disposal Considerations
Disposal: Instructions concerning the disposal of this product and its containers are given on the product label.
These should be carefully followed.
Section 14 - Transport Information
ADG Code: This product is not classified as a Dangerous Good. No special transport conditions are necessary
unless required by other regulations.
Section 15 - Regulatory Information
AICS: All of the significant ingredients in this formulation are found in the public AICS Database.
Section 16 - Other Information
This MSDS contains only safety-related information. For other data see product literature.
Acronyms:
ADG Code Australian Code for the Transport of Dangerous Goods by Road and Rail
Issued by: Genfarm Crop Protection Pty Ltd Phone: (02) 9889 5400
MATERIAL SAFETY DATA SHEET
Product Name: Genfarm Muron 600 WG Herbicide
This revision issued: August, 2005 Page: 5 of 5
AICS Australian Inventory of Chemical Substances
CAS number Chemical Abstracts Service Registry Number
Hazchem Number Emergency action code of numbers and letters that provide information to
emergency services especially firefighters
IARC International Agency for Research on Cancer
NOHSC National Occupational Health and Safety Commission
NOS Not otherwise specified
NTP National Toxicology Program (USA)
R-Phrase Risk Phrase
SUSDP Standard for the Uniform Scheduling of Drugs & Poisons
UN Number United Nations Number
THIS MSDS SUMMARISES OUR BEST KNOWLEDGE OF THE HEALTH AND SAFETY HAZARD INFORMATION OF THE PRODUCT AND
HOW TO SAFELY HANDLE AND USE THE PRODUCT IN THE WORKPLACE. EACH USER MUST REVIEW THIS MSDS IN THE CONTEXT OF
HOW THE PRODUCT WILL BE HANDLED AND USED IN THE WORKPLACE.
IF CLARIFICATION OR FURTHER INFORMATION IS NEEDED TO ENSURE THAT AN APPROPRIATE RISK ASSESSMENT CAN BE MADE,
THE USER SHOULD CONTACT THIS COMPANY SO WE CAN ATTEMPT TO OBTAIN ADDITIONAL INFORMATION FROM OUR SUPPLIERS
OUR RESPONSIBILITY FOR PRODUCTS SOLD IS SUBJECT TO OUR STANDARD TERMS AND CONDITIONS, A COPY OF WHICH IS SENT
TO OUR CUSTOMERS AND IS ALSO AVAILABLE ON REQUEST.
Please read all labels carefully before using product.
This MSDS is prepared in accord with the NOHSC document 鈥淣ational Code of Practice for the
Preparation of Material Safety Data Sheets鈥? 2nd Edition [NOHSC:2011(2003)]
Copyright 漏 Kilford & Kilford Pty Ltd, August, 2005.
http://www.kilford.com.au/ Phone (02)9251 4532
Issued by: Genfarm Crop Protection Pty Ltd Phone: (02) 9889 5400
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