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NIOSH

DICHLORVOS

ICSC: 0690

2,2-Dichlorovinyl dimethyl phosphate
Phosphoric acid, 2,2-dichloroethenyl dimethyl ester
DDVP
C4H7Cl2O4P / CCl2=CHOPO(OCH3)2
Molecular mass: 220.98
ICSC # 0690 		CAS # 62-73-7
RTECS # TC0350000
UN # 3018
EC # 015-019-00-X
March 27, 1998 Validated

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

STORAGE

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.
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs . See Chemical Dangers. Well closed. Keep in a well-ventilated room.
Do not transport with food and feedstuffs.
Severe
marine pollutant.
T+ symbol
N symbol
R: 24/25-26-43-50
S: 1/2-28-36/37-45-61
UN Hazard Class: 6.1
ICSC: 0690 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

DICHLORVOS

ICSC: 0690

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P

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D

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PHYSICAL STATE; APPEARANCE:
COLOURLESS TO AMBER LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes producing toxic fumes including phosphorus oxides , phosgene and chlorine fumes . Attacks metal,plasticandrubber.

OCCUPATIONAL EXPOSURE LIMITS:
OSHA PEL: TWA 1 mg/m3 skin
NIOSH REL: TWA 1 mg/m3 skin
NIOSH IDLH: 100 mg/m3 See: 62737
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

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

ENVIRONMENTAL
DATA

The substance is very toxic to aquatic organisms.

N O T E S

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.
Transport Emergency Card: TEC (R)-61GT6-II

ADDITIONAL INFORMATION



ICSC: 0690 DICHLORVOS
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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