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Name	Chlormephos	EINECS	N/A
CAS No.	24934-91-6	Density	1.295g/cm³
PSA	85.66000	LogP	3.86400
Solubility	60 mg l-1(20 °C)	Melting Point	25°C
Formula	C5H12 Cl O2 P S2	Boiling Point	249.5°Cat760mmHg
Molecular Weight	234.708	Flash Point	104.7°C
Transport Information	N/A	Appearance	N/A
Safety	Poison by inhalation, ingestion and skin contact. Symptoms may include nausea, vomiting, abdominal cramps, diarrhea, excessive salivation, headache, giddiness, weakness, muscle twitching, difficult breathing, blurring or dimness of vision, and loss of muscle coordination. Death may occur from failure of the respiratory center, paralysis of the respiratory muscles, or intense bronchoconstriction. An organophosphorus pesticide. Combustible. For small fires, use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam. When heated to decomposition it emits toxic fumes of Cl⁻, PO_x, and SO_x.	Risk Codes	27/28-50/53
Molecular Structure		Hazard Symbols
Synonyms	Chlormephos;Chlormephos-ethyl; Chlormethylfos; Dotan; MC 2188; O,O-Diethyl S-(chloromethyl)dithiophosphate; S-Chloromethyl O,O-diethyl phosphorothiolothionate	Article Data	8

Chlormephos Chemical Properties

IUPAC Name: Chloromethylsulfanyl-diethoxy-sulfanylidene-λ⁵-phosphane
Synonyms of Chlormephos (CAS NO.24934-91-6) : Dithiophosphate de S-(chlorométhyle) et de O,O-diéthyle ; Phosphorodithioic acid, S-(chloromethyl) O,O-diethyl ester ; S-(Chlormethyl)-O,O-diethyldithiophosphat ; S-(chloromethyl) O,O-diethyl phosphorodithioate
CAS NO:24934-91-6
Molecular Formula:C₅H₁₂ClO₂PS₂
Molecular Weight :234.7
Molecular Structure :
EINECS: 246-538-1
Index of Refraction: 1.526
Surface Tension: 46.5 dyne/cm
Density: 1.295 g/cm³
Flash Point: 104.7 °C
Enthalpy of Vaporization: 46.7 kJ/mol
Boiling Point: 249.5 °C at 760 mmHg
Vapour Pressure: 0.0362 mmHg at 25°C
Storage temp: 0-6°C
Appearance:Colorless liquid
Water solubility: Chlormephos (CAS NO.24934-91-6) is slightly soluble in water .

Chlormephos Uses

Chlormephos (CAS NO.24934-91-6) us used as a soil insecticide.

Chlormephos Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
chicken	LD50	oral	65mg/kg (65mg/kg)		National Technical Information Service. Vol. OTS0571931,
dog	LDLo	oral	12500ug/kg (12.5mg/kg)	BEHAVIORAL: ATAXIA GASTROINTESTINAL: ULCERATION OR BLEEDING FROM LARGE INTESTINE GASTROINTESTINAL: NAUSEA OR VOMITING	National Technical Information Service. Vol. OTS0570896,
guinea pig	LD50	oral	14mg/kg (14mg/kg)		National Technical Information Service. Vol. OTS0571931,
quail	LD50	oral	260mg/kg (260mg/kg)		"Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A081, Pg. 1983,
rabbit	LD50	skin	> 1600mg/kg (1600mg/kg)		Pesticide Manual. Vol. 9, Pg. 148, 1991.
rat	LC50	inhalation	88mg/m3/4H (88mg/m3)	SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE BEHAVIORAL: TREMOR KIDNEY, URETER, AND BLADDER: INCONTINENCE	National Technical Information Service. Vol. OTS0571210,
rat	LD50	oral	7mg/kg (7mg/kg)		Farm Chemicals Handbook. Vol. -, Pg. C70, 1991.
rat	LD50	skin	27mg/kg (27mg/kg)		Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 103, 1973.
rat	LD50	subcutaneous	45mg/kg (45mg/kg)	SENSE ORGANS AND SPECIAL SENSES: LACRIMATION: EYE BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: TREMOR	National Technical Information Service. Vol. OTS0571075,

Chlormephos Consensus Reports

EPA Extremely Hazardous Substances List.

Chlormephos Safety Profile

Poison by inhalation, ingestion and skin contact. Symptoms may include nausea, vomiting, abdominal cramps, diarrhea, excessive salivation, headache, giddiness, weakness, muscle twitching, difficult breathing, blurring or dimness of vision, and loss of muscle coordination. Death may occur from failure of the respiratory center, paralysis of the respiratory muscles, or intense bronchoconstriction. An organophosphorus pesticide. Combustible. For small fires, use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam. When heated to decomposition it emits toxic fumes of Cl⁻, PO_x, and SO_x.

Hazard Codes Very T+ Dangerous N
Risk Statements 27/28-50/53
R27/28: Very Toxic in contact with skin and if swallowed
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 28-36/37-45-60-61
S28:After contact with skin, wash immediately with plenty of soap-suds.
S36/37:Wear suitable protective clothing and gloves.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S60:This material and its container must be disposed of as hazardous waste.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR 3018
RTECS TD5170000
HazardClass 6.1(a)
PackingGroup II

Chlormephos Specification

1.Reactivity Profile :Organophosphates, such as Chlormephos , are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.
2.Health Hazard :(Non-Specific -- Organophosphorus Pesticide, Liquid, n.o.s.) Chlormephos is poisonous; it may be fatal if inhaled, swallowed, or absorbed through the skin.
3.Fire Hazard :(Non-Specific -- Organophosphorus Pesticide, Liquid, n.o.s.) Container may explode in heat of fire. Fire and runoff from control water may produce irritating or poisonous gases.

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