ICSC 0925 - NALED

NALED	ICSC: 0925 (April 2005)
1,2-Dibromo-2,2-dichloroethyl dimethyl phosphate

CAS #: 300-76-5

UN #: 3018

EC Number: 206-098-3

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.

STRICT HYGIENE! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Pupillary constriction, muscle cramp, excessive salivation. Sweating. Nausea. Vomiting. Dizziness. Convulsions. Unconsciousness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! Redness. Pain. Further see Inhalation.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .
Eyes	Redness. Pain. Blurred vision.	Wear face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Abdominal cramps. Vomiting. Diarrhoea. See Inhalation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Rest. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. If liquid: collect leaking liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Separated from strong oxidants, strong acids and food and feedstuffs. Dry. Well closed. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs. Marine pollutant.

NALED

ICSC: 0925

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-YELLOW LIQUID OR WHITE CRYSTALS WITH PUNGENT ODOUR. Physical dangers Chemical dangers Decomposes on heating and on contact with acids and oxidants. This produces toxic and corrosive fumes including hydrogen bromide, hydrogen chloride and phosphorus oxides. Decomposes on contact with water. This produces dichlorvos and dichloroacetaldehyde. Attacks metals, plastics, rubber and coatings.	Formula: C₄H₇Br₂Cl₂O₄P Molecular mass: 380.8 Boiling point at 0.066kPa: 110°C Melting point: 26.5-27.5°C Relative density (water = 1): 1.96 (25°C) Solubility in water: none Vapour pressure, Pa at 20°C: 0.26 Relative vapour density (air = 1): 13.2 Octanol/water partition coefficient as log Pow: 1.38

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID OR WHITE CRYSTALS WITH PUNGENT ODOUR.

Physical dangers

Chemical dangers
Decomposes on heating and on contact with acids and oxidants. This produces toxic and corrosive fumes including hydrogen bromide, hydrogen chloride and phosphorus oxides. Decomposes on contact with water. This produces dichlorvos and dichloroacetaldehyde. Attacks metals, plastics, rubber and coatings.

Formula: C₄H₇Br₂Cl₂O₄P
Molecular mass: 380.8
Boiling point at 0.066kPa: 110°C
Melting point: 26.5-27.5°C
Relative density (water = 1): 1.96 (25°C)
Solubility in water: none
Vapour pressure, Pa at 20°C: 0.26
Relative vapour density (air = 1): 13.2
Octanol/water partition coefficient as log Pow: 1.38

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the nervous system. This may result in convulsions and respiratory depression. Cholinesterase inhibition. Exposure far above the OEL could cause death. The effects may be delayed. Medical observation is indicated.	Inhalation risk A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster. Effects of long-term or repeated exposure Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the nervous system. This may result in convulsions and respiratory depression. Cholinesterase inhibition. Exposure far above the OEL could cause death. The effects may be delayed. Medical observation is indicated.

Inhalation risk
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.

Effects of long-term or repeated exposure
Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.1 mg/m³, as TWA; (skin); (SEN); A4 (not classifiable as a human carcinogen); BEI issued. MAK: (inhalable fraction): 0.5 mg/m³; peak limitation category: II(2); skin absorption (H); sensitization of skin (SH); pregnancy risk group: C

ENVIRONMENT
The substance is very toxic to aquatic organisms. This substance may be hazardous to the environment. Special attention should be given to bees. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

NOTES
Depending on the degree of exposure, periodic medical examination is suggested. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Carrier solvents used in commercial formulations may change physical and toxicological properties. See ICSC 0690 Dichlorvos (decomposition product of Naled).

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn, N; R: 21/22-36/38-50; S: (2)-36/37-61

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    See Also:
       Toxicological Abbreviations