Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content
NIOSH

TRICHLORPHON

ICSC: 0585

Dimethyl-2,2,2-trichloro-1-hydroxyethylphosphonate
Trichlorphene
(2,2,2-Trichloro-1-hydroxyethyl) phosphonic acid dimethyl ester
Chlorofos
C4H8Cl3O4P
Molecular mass: 257.4
ICSC # 0585 		CAS # 52-68-6
RTECS # TA0700000
UN # 2783
EC # 015-021-00-0
August 10, 1997 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible.
NO open flames.
In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE! AVOID EXPOSURE OF (PREGNANT) WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!
IN ALL CASES CONSULT A DOCTOR!
•INHALATION Sweating. Nausea. Vomiting. Dizziness. Pupillary constriction, muscle cramp, excessive salivation. Laboured breathing. Convulsions. Unconsciousness. Symptoms may be delayed (see Notes).
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN MAY BE ABSORBED! (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. Pupillary constriction. Blurred vision.
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 Nausea. Vomiting. Weakness. Abdominal cramps. Diarrhoea. Pupillary constriction, muscle cramps, excessive salivation. Laboured breathing. Unconsciousness.
Do not eat, drink, or smoke during work.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Do NOT wash away into sewer. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: A/P2 filter respirator for organic vapour and harmful dust.
Separated from strong bases, food and feedstuffs . Keep in a well-ventilated room.
Do not transport with food and feedstuffs.
Marine pollutant.
Xn symbol
N symbol
R: 22-43-50/53
S: 2-24-37-60-61
UN Hazard Class: 6.1
UN Packing Group: III
ICSC: 0585 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.

TRICHLORPHON

ICSC: 0585

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALS

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating and on contact with acids and bases producing toxic fumes. Attacks many metals.

OCCUPATIONAL EXPOSURE LIMITS:
TLV:
(Inhalable fraction)
1 mg/m3 as TWA; A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2004).
MAK not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on dust forming.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the nervous system by a cholinesterase inhibiting effect , resulting in convulsions, respiratory failure, and death. Cholinesterase inhibitor. Exposure at high level may result in death. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the nervous system . Cholinesterase inhibitor; cumulative effect is possible: see acute hazards/symptoms.

PHYSICAL
PROPERTIES

Melting point: 83-84°C
Relative density (water = 1): 1.73
Solubility in water, g/100 ml at 25°C: 15.4
Vapour pressure, Pa at 20°C: < 0.01
Octanol/water partition coefficient as log Pow: 0.48

ENVIRONMENTAL
DATA

The substance is very toxic to aquatic organisms. This substance may be hazardous in the environment; special attention should be given to honey bees and fish.

N O T E S

Depending on the degree of exposure, periodic medical examination is suggested. The symptoms of acute intoxication do not become manifest until some hours have passed. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. The recommendations on this card apply to the pure form. Commercial formulations are often mixtures including impurities, solvent or other agents which modify toxic and physicochemical properties. Acrol, DEP, DANEX, DIMETOX are trade names. Card has been partly updated in October 2004 and 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-61GT7-III

ADDITIONAL INFORMATION



ICSC: 0585 TRICHLORPHON
(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.
Top