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J y V MSDS: Nufarm Weedar 64 Broadleaf Herbicide Page 2 of 7 Likely Routes of Exposure:Inhalation,eye and skin contact. Eye Contact:Causes comeal opacity,irreversible eye damage.Vapors and mist can cause irritation. Skin Contact: May cause slight transient irritation. Overexposure by skin absorption may cause nausea, vomiting, abdominal pain,decreased blood pressure,muscle weakness,muscle spasms. Inhalation: Harmful if inhaled. May cause upper respiratory tract irritation and symptoms similar to those from ingestion. Ingestion: Harmful if swallowed. May cause nausea, vomiting, abdominal pain, decreased blood pressure, muscle weakness,muscle spasms. Medical Conditions Possibly Aggravated By Exposure: Inhalation of product may aggravate existing chronic respiratory problems such as asthma,emphysema or bronchitis. Skin contact may aggravate existing skin disease. Subehrouic(Target Organ)Effects: (An adverse effect with symptoms that develop slowly over a long period of time): Repeated overexposure may cause effects to liver, kidneys, blood chemistry, and gross motor function. Rare cases of peripheral nerve damage have been reported,but extensive animal studies have failed to substantiate these observations,even at high doses for prolonged periods. Chronic Effects/Carcinogenicity: Prolonged overexposure can cause liver, kidney and muscle damage. The International Agency for Research on Cancer (IARC) lists exposure to chlorophenoxy herbicides as a class 2B carcinogen, the category for limited evidence for carcinogenicity in humans. However, more current 2,4-D lifetime feeding studies in rats and mice did not show carcinogenic potential.The USEPA has given a class D classification (not classifiable as to human carcinogenicity). Reproductive Toxicity: No impairment of reproductive function attributable to 2,4-D has been noted in laboratory animal studies. Developmental Toxicity: Studies in laboratory animals with 2,4-D have shown decreased fetal body weights and delayed development in the offspring at doses toxic to mother animals. Genotoxicity:There have been some positive and some negative studies,but the weight of evidence is that 2,4-D is not mutagenic. 4.FIRST AID MEASURES If swallowed: If patient is conscious and alert, give 2 to 3 glasses of water or milk to drink. If available, give one tablespoon of Syrup of Ipecac to induce vomiting. Alternatively, induce vomiting by touching back of throat with finger.Do not make an unconscious person vomit.Get medical attention. If on skin:Wash skin with plenty of soap and water. Remove contaminated clothing. Get medical attention. If in eyes:Flush with water for at least IS minutes.Get medical attention,PREFERABLY AN OPHTHALMOLOGIST. If inhaled: Move to an uncontaminated area.Get medical attention. Note to Physician:This product contains a phenoxy herbicidal chemical.There is no specific antidote.All treatments should be based on observed signs and symptoms of distress in the patient. Overexposure to materials other than this product may have occurred. Myotonic effects may include muscle fibrillations,myotonia, and muscular weakness. Ingestion of massive doses may result in persistent fall of blood pressure. Myoglobin and hemoglobin may be found in urine. Elevations in lactate dehydrogenase(LDH),SGOT,SGPT and aldolase indicate the extent of muscle damage. It has been suggested that overexposure in humans may affect both the central and peripheral nervous systems. The acute effects on the central nervous system resemble those produced by alcohol or sedative drugs. In isolated cases, peripheral neuropathy and reduced nerve conduction velocities have been reported although these observations may be related to other factors. Gas-liquid chromatography for detecting and measuring chlorophenoxy compounds in blood and urine may be useful in confirming and assessing the magnitude of chlorophenoxy absorption. 5.FIRE FIGHTING MEASURES Flash Point:>2120 F(100°C)by Pensky-Martens closed cup method. Autoignition Temperature:Not determined. Flammability Limits:Not determined. Extinguishing Media:Recommended(large fire): foam,water spray.Recommended(small fires): dry chemical,carbon dioxide.