ICSC 0690 - DICHLORVOS

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

DICHLORVOS

ICSC: 0690
_{March 1998}

2,2-Dichlorovinyl dimethyl phosphate
Phosphoric acid, 2,2-dichloroethenyl dimethyl ester
DDVP

CAS No: 62-73-7
RTECS No: TC0350000
UN No: 3018
EC No: 015-019-00-X

C₄H₇Cl₂O₄P / CCl₂=CHOPO(OCH₃)₂
Molecular mass: 220.98

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Water spray, foam, powder, carbon dioxide.
EXPLOSION

EXPOSURE		STRICT HYGIENE! AVOID EXPOSURE OF (PREGNANT) WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Pupillary constriction, muscle cramp, excessive salivation. Sweating. Nausea. Dizziness. Laboured breathing. Convulsions. Unconsciousness.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Artificial respiration may be needed. 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		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 take to a doctor.
Ingestion	Abdominal cramps. Diarrhoea. Vomiting. (Further see Inhalation).	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment. Personal protection: chemical protection suit including self-contained breathing apparatus.	T+ Symbol N Symbol R: 24/25-26-43-50 S: (1/2-)28-36/37-45-61 UN Hazard Class: 6.1	Do not transport with food and feedstuffs. Severe marine pollutant.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT6-II	Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. See Chemical Dangers. Well closed. Keep in a well-ventilated room.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS TO AMBER LIQUID, WITH CHARACTERISTIC ODOUR.

Chemical dangers
The substance decomposes producing toxic fumes including phosphorus oxides, phosgene and chlorine fumes. Attacks metal, plastic and rubber.

Occupational exposure limits
TLV: 0.1 ppm as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued; SEN; (ACGIH 2004).
MAK: 0.11 ppm, 1 mg/m³; skin absorption (H); Peak limitation category: II(2); Pregnancy risk group: C; (DFG 2004).

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

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 short-term exposure
The substance is irritating to the skin. The substance may cause effects on the central nervous system. Cholinesterase inhibitor. Exposure above the OEL may result in death. The effects may be delayed. Medical observation is indicated.

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. Cholinesterase inhibitor; cumulative effect is possible: see acute hazards/symptoms. This substance is possibly carcinogenic to humans.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point at 2.7 kPa: 140°C Relative density (water = 1): 1.4 Solubility in water: moderate Vapour pressure, Pa at 20°C: 1.6 Flash point: >80°C Octanol/water partition coefficient as log Pow: 1.47	The substance is very toxic to aquatic organisms.

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.
Do NOT take working clothes home.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Dedevap, Nogas, Nuvan, Phosvit, Vapona, Bay19149 are trade names.
Also consult publication Environmental Health Criteria No. 79, Health Safety Guide No. 18.
Card has been partly updated in October 2004 and 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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