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Mevinphos

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Name

Mevinphos

EINECS 232-095-1
Annex I Index No: 015-020-00-5
B
CAS No. 7786-34-7 Density 1.216g/cm3
PSA 91.87000 LogP 0.86910
Solubility

Stability

    Stable. Combustible. Incompatible with strong oxidizing agents.

Toxicology

    Very toxic, and may be fatal, in contact with the skin, if inhaled and if swallowed. Exposure cancause a wide range of s
Melting Point -56 C (quoted by chemical supplier, though other sources givevalues in the range +7 to +14C)
Formula C7H13 O6 P Boiling Point 110 C
Molecular Weight 224.15 Flash Point 115.1°C
Transport Information N/A Appearance colourless liquid
Safety Poison by ingestion, inhalation, skin contact, subcutaneous, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: peripheral motor nerve recording changes. An insecticide. When heated to decomposition it emits toxic fumes of POx.

Analytical Methods:

   

For occupational chemical analysis use NIOSH: Mevinphos (Phosdrin) 2503.

Risk Codes R27/28; R50/53; R67; R65; R38; R11
Molecular Structure Molecular Structure of 7786-34-7 (MEVINPHOS) Hazard Symbols Toxic by ingestion, inhalation, and skin absorption; use may be restricted; cholinesterase inhibitor. TLV: TWA 0.01 ppm; STEL 0.03 ppm.
Synonyms

Crotonicacid, 3-hydroxy-, methyl ester, dimethyl phosphate (6CI,8CI);1-Methoxycarbonyl-1-propen-2-yl dimethyl phosphate;2-Carbomethoxy-1-methylvinyl dimethyl phosphate;2-Methoxycarbonyl-1-methylvinyl dimethyl phosphate; CMDP; Fosdrin; Gesfid;Meniphos; Mevinphos; NSC 46470; O,O-Dimethyl O-(1-carbomethoxy-1-propen-2-yl)phosphate; PD 5; PD 5 (pesticide); Phosdrin; Phosdrin W 10

 

Mevinphos Synthetic route

4755-81-1

methyl 2-chloroacetoacetate

121-45-9

phosphorous acid trimethyl ester

7786-34-7

phosdrin

Conditions
ConditionsYield
Heating;
7786-34-7

phosdrin

C20H12EuNO12

C20H12EuNO12*C7H13O6P

Conditions
ConditionsYield
In ethanol at 19.84℃; Temperature; Solvent;
7786-34-7

phosdrin

C20H12EuNO12

C20H12NO12Tb*C7H13O6P

Conditions
ConditionsYield
In ethanol at 19.84℃; Temperature; Solvent;

Mevinphos Chemical Properties

The IUPAC name of Mevinphos (CAS NO.7786-34-7): Methyl (E)-3-dimethoxyphosphoryloxybut-2-enoate
Synonyms: Duraphos ; E-Mevinphos;e-mevinphos (trans) ; Mevindrin ; Mevinphos ; 3-Hydroxy-crotonic acid methyl ester dimethyl phosphate ; 2-Carbomethoxy-1-methylvinyldimethyl phosphate ; 2-Methoxycarbonyl-1-methylvinyl dimethyl phosphate
CAS: 7786-34-7 
EINECS: 232-095-1 
Molecular Formula: C7H13O6
Molecular Structure:

Formula Weight: 224.15 g/mol
Index of Refraction: 1.437 
Density: 1.216 g/cm3 
Flash Point: 115.1 °C 
Boiling Point: 243.4 °C at 760 mmHg
 

Mevinphos Toxicity Data With Reference

The toxicity of Mevinphos (CAS NO.7786-34-7):

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
bird - wild LD50 oral 1400ug/kg (1.4mg/kg)   Journal de Toxicologie Clinique et Experimentale. Vol. 6(3), Pg. 175, 1986.
duck LD50 oral 4600ug/kg (4.6mg/kg)   Down to Earth. Vol. 35, Pg. 25, 1979.
duck LD50 skin 11mg/kg (11mg/kg)   Toxicology and Applied Pharmacology. Vol. 47, Pg. 451, 1979.
gerbil LD50 intraperitoneal 450ug/kg (0.45mg/kg)   Toxicology and Applied Pharmacology. Vol. 36, Pg. 195, 1976.
man TDLo oral 700ug/kg/28D- (0.7mg/kg) PERIPHERAL NERVE AND SENSATION: RECORDING FROM PERIPHERAL MOTOR NERVE Toxicology and Applied Pharmacology. Vol. 42, Pg. 351, 1977.
mouse LD50 intraperitoneal 2mg/kg (2mg/kg)   Canadian Journal of Biochemistry and Physiology. Vol. 39, Pg. 1790, 1961.
mouse LD50 intravenous 680ug/kg (0.68mg/kg)   Journal of Pharmacy and Pharmacology. Vol. 19, Pg. 612, 1967.
mouse LD50 oral 4mg/kg (4mg/kg) GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION

BEHAVIORAL: TREMOR
AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 9, Pg. 45, 1954.
mouse LD50 skin 12mg/kg (12mg/kg)   Journal of Toxicology and Environmental Health. Vol. 9, Pg. 491, 1982.
mouse LD50 subcutaneous 1180ug/kg (1.18mg/kg)   Journal of Pharmacy and Pharmacology. Vol. 19, Pg. 612, 1967.
pigeon LD50 oral 4210ug/kg (4.21mg/kg)   ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979.
quail LD50 oral 23700ug/kg (23.7mg/kg)   ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979.
rabbit LD50 skin 4700ug/kg (4.7mg/kg)   Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 353, 1973.
rat LC50 inhalation 14ppm/1H (14ppm) BEHAVIORAL: TREMOR

LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 9, Pg. 45, 1954.
rat LD50 intraperitoneal 800ug/kg (0.8mg/kg)   Advances in Pest Control Research. Vol. 4, Pg. 117, 1961.
rat LD50 oral 3mg/kg (3mg/kg)   Down to Earth. Vol. 35, Pg. 25, 1979.
rat LD50 skin 4200ug/kg (4.2mg/kg) BEHAVIORAL: TREMOR

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
BEHAVIORAL: EXCITEMENT
Toxicology and Applied Pharmacology. Vol. 2, Pg. 88, 1960.
rat LD50 subcutaneous 940ug/kg (0.94mg/kg)   Folia Medica Vol. 24(4), Pg. 23, 1982.

Mevinphos Consensus Reports

EPA Genetic Toxicology Program. EPA Extremely Hazardous Substances List.

Mevinphos Safety Profile

The Hazard Codes of Mevinphos (CAS NO.7786-34-7): VeryT+DangerousNHarmfulXnFlammableF
Risk Statements:R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R67:Vapours may cause drowsiness and dizziness. R65:Harmful: may cause lung damage if swallowed. R38:Irritating to skin. R11:Highly flammable. 
Safety Statements:S23:Do not breathe vapour. 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. S62:If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. 
Poison by ingestion, inhalation, skin contact, subcutaneous, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: peripheral motor nerve recording changes. An insecticide. When heated to decomposition it emits toxic fumes of POx.                     

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Mevinphos Standards and Recommendations

OSHA PEL: TWA 0.01 ppm; STEL 0.03 ppm (skin)
ACGIH TLV: TWA 0.01 mg/m3 (skin); Not Classifiable as a Human Carcinogen
DFG MAK: 0.01 ppm (0.093 mg/m3)

Mevinphos Analytical Methods

For occupational chemical analysis use NIOSH: Mevinphos (Phosdrin) 2503.

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