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| Malathion | CAS 121-75-5 | ||
| C10H19O6PS2 | RTECS WM8400000 | ||
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Synonyms & Trade Names S-[1,2-bis(ethoxycarbonyl) ethyl]O,O-dimethyl-phosphorodithioate; Diethyl (dimethoxyphosphinothioylthio) succinate |
DOT ID & Guide 2783 152 |
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Exposure Limits |
NIOSH REL: TWA 10 mg/m3 [skin] | ||
| OSHA PEL�: TWA 15 mg/m3 [skin] | |||
| IDLH 250 mg/m3 | Conversion | ||
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Physical Description Deep-brown to yellow liquid with a garlic-like odor. [insecticide] [Note: A solid below 37°F.] |
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MW: 330.4 |
BP: 140°F (Decomposes) |
FRZ: 37°F |
Sol: 0.02% |
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VP: 0.00004 mmHg |
IP: ? |
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Sp.Gr: 1.21 |
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Fl.P(oc): >325°F |
UEL: ? |
LEL: ? |
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| Class IIIB Combustible Liquid, but may be difficult to ignite. | |||
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Incompatibilities & Reactivities Strong oxidizers, magnesium, alkaline pesticides [Note: Corrosive to metals.] |
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Measurement Methods NIOSH 5600; OSHA 62 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily |
First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH Up to 100 mg/m3: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s) in combination with a dust, mist, and fume filter/(APF = 10) Any supplied-air respirator Up to 250 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s) in combination with a high-efficiency particulate filter/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s) in combination with a dust, mist, and fume filter*/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin; miosis, aching eyes, blurred vision, lacrimation (discharge of tears); salivation; anorexia, nausea, vomiting, abdominal cramps, diarrhea, dizziness, confusion, ataxia; rhinorrhea (discharge of thin mucus), headache; chest tightness, wheezing, laryngeal spasm | |
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Target Organs
Eyes, skin, respiratory system, liver, blood cholinesterase, central nervous system, cardiovascular system, gastrointestinal tract |
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| See also: INTRODUCTION |