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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
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NIOSH REL: TWA 10 mg/m3 [skin] | ||
| OSHA PEL†: TWA 15 mg/m3 [skin] | |||
| IDLH 250 mg/m3 See: 121755 | 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 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation (See protection) 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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Important additional information about respirator selection Respirator Recommendations NIOSH Up to 100 mg/m3: (APF = 10) Any air-purifying half-mask respirator with organic vapor cartridge(s) in combination with an N95, R95, or P95 filter. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters. (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 air-purifying full-facepiece respirator equipped with organic vapor cartridge(s) in combination with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters. (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters. (APF = 25) Any powered air-purifying respirator with an organic vapor cartridge in combination with a high-efficiency particulate 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 an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters./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 See ICSC CARD: 0172 See MEDICAL TESTS: 0130 |