Malathion SDS

Acute toxicity - Category 4, Oral

Skin sensitization, Category 1

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 1

H302 Harmful if swallowed

H317 May cause an allergic skin reaction

H410 Very toxic to aquatic life with long lasting effects

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P272 Contaminated work clothing should not be allowed out of the workplace.

P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...

P273 Avoid release to the environment.

P301+P317 IF SWALLOWED: Get medical help.

P330 Rinse mouth.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P333+P317 If skin irritation or rash occurs: Get medical help.

P321 Specific treatment (see ... on this label).

P362+P364 Take off contaminated clothing and wash it before reuse.

P391 Collect spillage.

none

P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

no data available

Fresh air, rest. Half-upright position. Refer for medical attention.

Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth. Give a slurry of activated charcoal in water to drink. Rest. Refer for medical attention .

Exposure to fumes from a fire or to liquid causes headache, blurred vision, constricted pupils of the eyes, weakness, nausea, cramps, diarrhea, and tightness in the chest. Muscles twitch and convulsions may follow. The symptoms may develop over a period of 8 hours. (USCG, 1999)

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Speed in removing material from skin is of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility.

Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

Special Hazards of Combustion Products: Vapors and fumes from fires are hazardous. They include sulfur dioxide and phosphoric acid. Behavior in Fire: Gives off hazardous fumes. Area surrounding fire should be diked to prevent water runoff. (USCG, 1999)

Use foam. Use powder. Use carbon dioxide.

Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. See Chemical Dangers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. See Chemical Dangers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up: Soak up with inert absorbent material and dispose of as hazardous waste. Keep in suitable, closed containers for disposal.

NO open flames. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Store in an area without drain or sewer access. Separated from strong oxidants and food and feedstuffs. Keep in a well-ventilated room.Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Recommended storage temperature 2 - 8 deg C

TLV: 1 mg/m3, as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued.MAK: (inhalable fraction): 15 mg/m3; peak limitation category: II(4); pregnancy risk group: D

no data available

Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.

Wear safety goggles or eye protection in combination with breathing protection.

Protective gloves. Protective clothing.

Use ventilation, local exhaust or breathing protection.

no data available

Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides and sulfur oxides. Reacts violently with strong oxidants. Attacks iron, some other metals, some forms of plastic and rubber. Decomposes on heating. This produces the more toxic isomalathion.

Stable under recommended storage conditions.

Malathion is combustible but ignites with difficulty.MALATHION is a yellow to brown liquid that solidifies at 2.9° C, moderately toxic. Organic phosphate insecticide, acts as an inhibitor of cholinesterase. When heated to decomposition it emits toxic fumes of oxides of sulfur and phosphorus [Lewis, 3rd ed., 1993, p. 789].

no data available

Incompatible materials: Strong oxidizing agents. Corrodes metal.

Hazardous decomposition products formed under fire conditions - Carbon oxides, sulfur oxides, oxides of phosphorus

no data available

no data available

no data available

no data available

Cancer Classification: Suggestive Evidence of Carcinogenicity, but Not Sufficient to Assess Human Carcinogenic Potential

no data available

The substance may cause effects on the central nervous system. This may result in convulsions and respiratory depression. The effects may be delayed. Medical observation is indicated.

Repeated or prolonged contact may cause skin sensitization. Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.

AEROBIC: Malathion, present at 100 mg/L, reached 22% of its Theoretical BOD in 4 weeks using an activated sludge inoculum at 30 mg/L in the Japanese MITI test(1). Malathion is rapidly degraded in soils with reported degradation in 10 days in various non sterile (sterile) loam soils: 92% (8%), 94% (5%), and 81% (19%)(2). Biochemical reactions utilized include desulfuration, oxidation, hydrolysis, transfer of alkyl or aryl groups, alkylation, dealkylation, reduction and conjugation(2). The rate of degradation increased with increasing soil organic matter and was related to soil pH(3). C14-Malathion was biodegraded 50% and 10% after 17 days in clay loam (45.3% sand, 19.7% silt, 35% clay, 5.74% organic matter) and sandy soil (74.74% sand, 24.76% silt, 0.5% clay, 1.9% organic matter), respectively(4). In activated sludge, malathion had a first-order degradation rate of 0.161/hr(8). In raw river water (pH 7.3-8.0), malathion was degraded 90% within 2 weeks, no change was observed in distilled water over 3 weeks suggesting that degradation was biological(5). Degradation of malathion was complete in 3 days in non-sterile estuarine sediments, and 57% in 11 days in sterilized sediment(6). Malathion has a first-order degradation rate of 0.902/day and a half-life of 0.8 days under aerobic conditions, under anaerobic conditions a first-order degradation rate of 0.302/day and a half-life of 2.3 days were reported in sediment from San Diego Creek, CA(7). Products of degradation include alpha and beta monocarboxylic acids (major metabolite in soil), and dicarboxylic acid(9).

Malathion did not bioconcentrate in the freshwater fish topmouth gudgeon (Pseudorasbora parva)(1). No detectable concentration of malathion was observed in pinfish (Lagodon sp) after exposure to 20-75 ug/L(2). Malathion undergoes biotransformation in fish with some of the metabolites being malaoxon, malathion monoacid, malathion diacid, O,O-dimethyl phosphorodithioate, O,O-dimethyl phosphorodithiolate, O,O-dimethyl phosphorodithionate and O,O-dimethylphosphate(2). Based on the rapid metabolism, bioconcentration of malathion in aquatic organisms is expected to be low(SRC). The BCF for egg masses of the Triaenodes tardus (caddisfly) was found to be 10(3). Malathion had BCFs of 3.0, 23 and 1.2 in axenically cultured parrot feather (Myriophyllum aquaticum), duckweed (Spirodela oligorrhiza L) and elodea (Elodea canadensis), respectively(4).

The Koc of malathion was determined 26 times in a field study conducted with five applications at a 10 day interval in a lychee orchard in northern Thailand; Koc values were reported as 927-17,620(1). Other reported Koc values of malathion in soil are 1175(2), 1200(3) and 1800(4). According to a classification scheme(5), these Koc values suggest that malathion is expected to have low to no mobility in soil(SRC). An experiment conducted to see how much malathion leaches at depths of 50 cm in soil found that most of the malathion is degraded in the higher layers of soil (within the polar carboxylic acid groups) and only small degradation products, that are usually biodegradable, move to the groundwater(6).

no data available

The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

ADR/RID: UN3082 (For reference only, please check.)

IMDG: UN3082 (For reference only, please check.)

IATA: UN3082 (For reference only, please check.)

ADR/RID: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (For reference only, please check.)

IMDG: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (For reference only, please check.)

IATA: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (For reference only, please check.)

ADR/RID: 9 (For reference only, please check.)

IMDG: 9 (For reference only, please check.)

IATA: 9 (For reference only, please check.)

ADR/RID: III (For reference only, please check.)

IMDG: III (For reference only, please check.)

IATA: III (For reference only, please check.)

ADR/RID: Yes

IMDG: Yes

IATA: Yes

no data available

no data available

Depending on the degree of exposure, periodic medical examination is suggested.Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.If the substance is formulated with solvents also consult the ICSCs of these materials.Carrier solvents used in commercial formulations may change physical and toxicological properties.