ICSC 0054 - MCPA

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MCPA	ICSC: 0054 (November 2009)
4-Chloro-o-tolyloxyacetic acid 2-Methyl-4-chlorophenoxyacetic acid 4-Chloro-2-methylphenoxyacetic acid

CAS #: 94-74-6

UN #: 3077

EC Number: 202-360-6

	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. Risk of fire and explosion if formulations contain flammable/explosive solvents.		In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Headache. Nausea.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Pain.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .
Eyes	Redness. Pain. Burns. Blurred vision.	Wear safety goggles or eye protection in combination with breathing protection if powder.	Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.
Ingestion	Burning sensation in the throat and chest. Abdominal pain. Nausea. Diarrhoea. Unconsciousness. Vomiting. Weakness. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give one or two glasses of water to drink. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and particulates adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Harmful if swallowed or if inhaled Causes skin irritation Causes serious eye damage May cause respiratory irritation Very toxic to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 9; UN Pack Group: III
STORAGE
Provision to contain effluent from fire extinguishing. Separated from strong bases and food and feedstuffs. Store in an area without drain or sewer access. Cool.
PACKAGING
Do not transport with food and feedstuffs.

MCPA

ICSC: 0054

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance WHITE CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR. Physical dangers No data. Chemical dangers Decomposes on heating. This produces toxic and corrosive fumes including hydrogen chloride and phosgene. The substance is a weak acid. Attacks many metals in the presence of water.	Formula: C₉H₉ClO₃ Molecular mass: 200.6 Melting point: 113-119°C Relative density (water = 1): 1.3 Solubility in water: none Vapour pressure, Pa at 20°C: (negligible) Octanol/water partition coefficient as log Pow: 2.8

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR.

Physical dangers
No data.

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes including hydrogen chloride and phosgene. The substance is a weak acid. Attacks many metals in the presence of water.

Formula: C₉H₉ClO₃
Molecular mass: 200.6
Melting point: 113-119°C
Relative density (water = 1): 1.3
Solubility in water: none
Vapour pressure, Pa at 20°C: (negligible)
Octanol/water partition coefficient as log Pow: 2.8

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 skin and respiratory tract. The substance is corrosive to the eyes. The substance may cause effects on the nervous system and heart when ingested in large amounts.	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 long-term or repeated exposure

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 skin and respiratory tract. The substance is corrosive to the eyes. The substance may cause effects on the nervous system and heart when ingested in large amounts.

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 long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is very toxic to aquatic organisms. 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
MCPA is a chlorophenoxy-herbicide which, as a group, has been classified as possibly carcinogenic to humans. Depending on the degree of exposure, periodic medical examination is suggested. Carrier solvents used in commercial formulations may change physical and toxicological properties.

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn, N; R: 22-38-41-50/53; S: (2)-26-37-39-60-61

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