International Chemical Safety Cards

METHOXYCHLOR

ICSC: 1306

1,1-(2,2,2-Trichloroethylidene)bis(4-methoxybenzene)
1,1,1-Trichloro-2,2-bis(p-methoxyphenyl)ethane
Dimethoxy-DDT
C₁₆H₁₅C₁₃O₂
Molecular mass: 345.7
ICSC # 1306
CAS # 72-43-5
RTECS # KJ3675000

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.	Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION

EXPOSURE		PREVENT DISPERSION OF DUST! STRICT HYGIENE! AVOID EXPOSURE OF (PREGNANT) WOMEN!
•INHALATION	(See Ingestion).	Local exhaust or breathing protection.	Fresh air, rest.
•SKIN		Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES		Safety spectacles, 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	Convulsions. Diarrhoea. Nausea. Vomiting.	Do not eat, drink, or smoke during work. Wash hands before eating.	Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles).

Separated from food and feedstuffs. Well closed. Keep in a well-ventilated room.

Do not transport with food and feedstuffs.
R:
S:

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1306

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 2000. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

METHOXYCHLOR

ICSC: 1306

I

M

P

O

R

T

A

N

T

D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO LIGHT YELLOW CRYSTALS , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:

CHEMICAL DANGERS:
The substance decomposes on heating and on burning producing toxic and corrosive gases including hydrogen chloride see ICSC 0163. Reacts with oxidants. Attacks some plastics and rubber.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 mg/m³ (ACGIH 1998).
MAK: 15 mg/m³; III (1996)
OSHA PEL: TWA 15 mg/m³
NIOSH REL: Ca See Appendix A
NIOSH IDLH: Potential occupational carcinogen 5000 mg/m³

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 spraying or when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the liver, kidneys, central nervous system, when ingested in large amounts. Animal tests show that this substance possibly causes toxic effects upon human reproduction.

PHYSICAL
PROPERTIES

Melting point: 89°C
Density: 1.4
g/cm³

Solubility in water: none
Vapour pressure: very low
Octanol/water partition coefficient as log Pow: 4.68-5.08

ENVIRONMENTAL
DATA

The substance is very toxic to aquatic organisms. In the food chain important to humans, bioaccumulation takes place, specifically in fish. Avoid release to the environment in circumstances different to normal use.

N O T E S

Temperature of decomposition unknown in literature. Depending on the degree of exposure, periodic medical examination is indicated. If the substance is formulated with solvent(s) also consult the card(s) (ICSC) of the solvent(s). Carrier solvents used in commercial formulations may change physical and toxicological properties. Maralate, Marlate, Metox, Prentox, Methoxicide are trade names. Also consult ICSC - #0034 for DDT.

ADDITIONAL INFORMATION

ICSC: 1306	METHOXYCHLOR
(C) IPCS, CEC, 2000

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.

SKC Gulf Coast Home NIOSH Database Home