| Agent Name |
Naled |
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| Alternative Name |
Dibrom |
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| CAS Number |
300-76-5 |
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| Formula |
C4-H7-Br2-Cl2-O4-P |
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| Major Category |
Pesticides |
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| Synonyms |
1,2-Dibromo-2,2-dichloroethyl dimethyl phosphate; Alvora; Arthodibrom; BRP; Bromchlophos; Bromex; Bromex (insecticide); Bromex 50; Dibrom; Dibromfos; Dimethyl 1,2-dibromo-2,2-dichloroethyl phosphate; Ethanol, 1,2-dibromo-2,2-dichloro-, dimethyl phosphate; Flibol Ex; Fosbrom; Fosforan O-1,2-dwubromo-2,2-dwuchloroetylo-O,O-dwumetylowy [Polish]; Hibrom; Naledu [Polish]; Nikabrom; O,O-Dimethyl O-2,2-dichloro-1,2-dibromoethyl phosphate; O,O-Dimethyl-O-(1,2-dibrom-2,2-dichlor-aethyl)-phosphat [German]; O,O-Dimethyl-O-(1,2-dibromo-2,2-dichloroethyl)phosphate; O-(1,2-Dibrom-2,2-dichlor-aethyl)-O,O-dimethyl-phosphat [German]; O-(1,2-Dibromo-2,2-dicloro-etil)-O,O-dimetil-fosfato [Italian]; O-(1,2-Dibroom-2,2-dichloor-ethyl)-O,O-dimethyl-fosfaat [Dutch]; OMS 75; Ortho 4355; Ortho-dibrom; Orthodibromo; Phosphate de O,O-dimethyle et de O-(1,2-dibromo-2,2-dichlorethyle) [French]; Phosphoric acid, 1,2-dibromo-2,2-dichloroethyl dimethyl ester (8CI)(9CI); RE-4355; [ChemIDplus] |
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| Category |
Organophosphates |
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| Description |
Colorless to white solid or straw-colored liquid (above 80 degrees F) with a slightly pungent odor. [insecticide]; [NIOSH] |
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| Sources/Uses |
Used to kill aphids, mites, mosquitoes, and flies; also used by veterinarians to treat worm infections in dogs; [EXTOXNET] |
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| Comments |
Classified as "moderately toxic," naled has an LD50 of 91 to 430 mg/kg in rats; skin sensitization has been reported; [EXTOXNET] |
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| Reference Link |
EXTOXNET PIP - NALED |
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| Exposure Assessment |
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| BEI |
Cholinesterase activity in red cells = 70% of individual's baseline, sample time discretionary; [ACGIH] |
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| Skin Designation (ACGIH) |
Yes |
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| TLV (ACGIH) |
0.1 mg/m3, inhalable fraction and vapor |
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| PEL (OSHA) |
3 mg/m3 |
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| MAK |
3 mg/m3, inhalable fraction |
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| IDLH (NIOSH) |
200 mg/m3 |
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| Excerpts from Documentation for IDLHs |
Basis for original (SCP) IDLH: Because no useful data on acute inhalation toxicity are available, the chosen IDLH has been estimated from the male rat oral LD50 of 250 mg/kg [Gaines 1969 cited by ACGIH 1971]. ACGIH [1971] also reported that the acute toxicity data, inhalation data, and experience to date indicate that this is not a highly dangerous material. . . . Human data: None relevant for use in determining the revised IDLH. |
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| Vapor Pressure |
0.0002 mm Hg |
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| Lethal Concentration |
LC (mice) > 1,500 mg/m3/6h |
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| Adverse Effects |
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| Skin Sensitizer |
Yes |
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| Other Poison |
Organophosphate |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: NALED
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