Naled

  • 1,2-Dibromo-2,2-dichloroethyl dimethyl phosphate
  • Dimethyl-1,2-dibromo-2,2-dichlorethyl phosphate
Formula
C4H7Br2Cl2O4P
Structure
Description
Colorless to white solid or straw-colored liquid with a slightly pungent odor.
Uses
Fungicide, bactericide.

Registry Numbers and Inventories.
CAS
300-76-5
EC (EINECS/ELINCS)
206-098-3
EC Index Number
015-055-00-6
EC Class
Harmful; Irritant
RTECS
TB9450000
RTECS class
Agricultural Chemical and Pesticide; Mutagen; Primary Irritant
UN (DOT)
3018
Merck
12,6445
Beilstein/Gmelin
2049930
EPA OPP
34401
Swiss Giftliste 1
G-2555
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C4H7Br2Cl2O4P
Formula mass
380.78
Melting point, °C
27.0
Boiling point, °C
273
Vapor pressure, mmHg
0.009 (25 C)
Vapor density (air=1)
13.1
Density
1.96 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
1.38
Heat of vaporization
49.2 kJ/mol

Hazards and Protection.
Storage
Tightly closed containers. Keep away from heat, water, food, foodstuffs, and sunlight, which may cause slow decomposition.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash or cement powder. Water spill: If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
Container may rupture under fire conditions.
Incompatibilities
Incompatible with the following: Strong oxidizers, acids, sunlight, water Corrosive to metals.
Decomposition
When heated to decomp naled evolves very toxic fumes of hydrogen bromide, hydrogen chloride and phosphorus oxides hazardous decomposition products. May include: hydrogen bromide, hydrogen chloride, phosphoric acid and carbon monoxide.

Fire.
Flash Point,°C
119
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Combustible.
Hazards
Containers may explode when heated.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
TLV: ppm; 3 mg/m3 A4 (skin) (ACGIH 1996). OSHA PEL: TWA 3 mg/m3 NIOSH REL: TWA 3 mg/m3 skin NIOSH IDLH: 200 mg/m3
Poison_Class
3
Exposure effects
Reduced body temperature or elevated body temperature may occur. Low heart rate and abnormally low blood pressure may develop after moderate to severe poisoning. Rapid heart rate, elevated blood pressure, and changes in respiratory rate may also occur. Early giddiness, anxiety headache, and restlessness followed by ataxia, drowsiness, and confusion are common with moderate to severe exposures. Sporadic reports of human birth defects related to organophosphates have not been fully verified.
   Ingestion
Nausea, vomiting, abdominal cramps, and diarrhea are common muscarinic effects. Both painless and frank clinical pancreatitis have been reported.
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Profuse sweating is common. Pallor may be noted. Dermal sensitization has been reported.
   Eyes
Constriction of the pupil, tearing, and blurred vision are common. Prolonged dialation of the pupils may occur. Salivation commonly occurs.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
3018
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
NLD
 
Std. Transport #
4961659