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Naled

Naled structure

CAS No:
300-76-5
Formula:
C4H7Br2Cl2O4P
Chemical Name:
Naled
Synonyms:
Phosphoric acid,1,2-dibromo-2,2-dichloroethyl dimethyl ester;Ethanol,1,2-dibromo-2,2-dichloro-,dimethyl phosphate;RE 4355;ENT 24988;Dibrom;Naled;Bromex;O,O-Dimethyl O-(1,2-dibromo-2,2-dichloroethyl) phosphate;Bromex 50;Dimethyl 1,2-dibromo-2,2-dichloroethyl phosphate;Dibromfos;1,2-Dibromo-2,2-dichloroethyl dimethyl phosphate;Alvora;Fosbrom;Bromex (insecticide);BRP;Bromchlophos;Flibol Ex;Trumpet;Dibrom 8 Emulsive;Dibrom 8;53095-31-1
Categories:
Agrochemicals > Insecticides

Description

Clear Colorless Liquid Naled is a white crystalline solid (when pure) or light straw-colored liquid (above 26.7℃) with a slightly pungent insecticide odor.

Naled Basic Attributes

Molecular Weight：

380.78

Exact Mass：

380.78

EC Number：

206-098-3

HScode：

2919900090

Characteristics

PSA：

44.8

XLogP3：

1.38

Appearance：

Naled is a white solid that may be dissolved in a liquid organic carrier with a pungent odor. It is a water emulsifiable liquid. It is insoluble in water and sinks in water. It can cause illness by inhalation, skin absorption and/or ingestion. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. If it is in liquid form, it can easily penetrate the soil and contaminate groundwater and nearby streams. It is used as a pesticide.

Density：

1.96 g/cm³ @ Temp: 25 °C

Melting Point：

26.5-27.5 °C

Boiling Point：

110 °C @ Press: 0.50 Torr

Flash Point：

119.4±27.3 °C

Refractive Index：

1.529

Water Solubility：

Solubility in water: none

Storage Conditions：

0-6°C

Vapor Pressure：

Vapour pressure, Pa at 20°C: 0.26

Vapor Density：

Relative vapour density (air = 1): 13.2

Toxicity：

Oral-rat LD50: 92 mg/kg; Oral-Mouse LD50: 222 mg/kg

Flammability characteristics：

Open flame is flammable; heat decomposes toxic phosphorus oxide and halide gas

Odor：

Slightly pungent odor

Safety Information

Packing level：

Hazard category：

6.1(a)

Transport codes：

3018

wgk germany：

hazard class code：

21/22-36/38-50-25-21

safety instructions：

36/37-61-26

RTECS Number：

TB9450000

Marks：

Xn,N,T

Storage features：

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

Stability/Shelf Life：

Stable in brown glass containers.

Precautionary statement(s)：

P273-P301 + P310 + P330-P302 + P352 + P312-P305 + P351 + P338-P337 + P313-P391

Hazard Statements：

H301-H312-H315-H319-H400

Toxicity

Toxicity class：

highly toxic

Naled Use and Manufacturing

Methods of Manufacturing

232.6g dichlorvos and 0.4g benzoyl peroxide were added to carbon tetrachloride, heated to 80°C with stirring, and then bromine 179.4°g was added dropwise. After the addition, keep the reaction at 80℃. After the reaction is completed, cool and remove carbon tetrachloride under reduced pressure to obtain dibromophosphonium.

Uses

Insecticide; acaricide.

Computed Properties

Molecular Weight:380.78
XLogP3:2.5
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:5
Exact Mass:379.78053
Monoisotopic Mass:377.78258
Topological Polar Surface Area:44.8
Heavy Atom Count:13
Complexity:206
Undefined Atom Stereocenter Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes