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Odorless white to tan solid. Sinks in water. (USCG, 1999)

CAS Number	UN/NA Number	DOT Hazard Label	USCG CHRIS Code
94-75-7	3077	Class 9	DCA
2,4-D	2,4-D

Water-Reactive

Decomposes rapidly in water.

Special Hazards of Combustion Products: Toxic and irritating hydrogen chloride or phosgene gases may form. (USCG, 1999)

Dust may irritate eyes. Ingestion causes gastroentric distress, diarrhea, mild central nervous system depression, dysphagia, and possible transient liver and kidney injury. (USCG, 1999)

2,4-DICHLOROPHENOXYACETIC ACID is incompatible with strong oxidizers. It is corrosive to metals. (NTP, 1992)

Acids, Carboxylic
Halogenated Organic Compounds
Aryl Halides

No information available.

Excerpt from 171

[Substances (Low to Moderate Hazard)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Fire Extinguishing Agents: Water, foam (USCG, 1999)

Neutralizing Agents for Acids and Caustics: Flush with water, rinse with sodium bicarbonate or lime solution. (USCG, 1999)

Excerpt from NIOSH Pocket Guide for 2,4-D:

Skin: PREVENT SKIN CONTACT - Wear appropriate personal protective clothing to prevent skin contact.

Eyes: PREVENT EYE CONTACT - Wear appropriate eye protection to prevent eye contact.

Wash skin: WHEN CONTAMINATED - The worker should immediately wash the skin when it becomes contaminated.

Remove: WHEN WET OR CONTAMINATED - Work clothing that becomes wet or significantly contaminated should be removed and replaced.

Change: DAILY - Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premises. (NIOSH, 2023)

No information available.

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.

OTHER: Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the physician will depend upon the specific compound, its chemical, physical and toxicity properties, the exposure level, length of exposure, and the route of exposure. (NTP, 1992)

Chemical	PAC-1	PAC-2	PAC-3
Dichlorophenoxyacetic acid, 2,4-; (2,4-D) (94-75-7)	30 mg/m3	94 mg/m3	500 mg/m3

Regulatory Name	CAS Number/ 313 Category Code	CERCLA RQ	EPCRA 313 TRI	RCRA Code
2,4-D	94-75-7	100 pounds	313	U240
2,4-D Acid	94-75-7	100 pounds	X	U240
2,4-D, salts and esters	94-75-7	100 pounds		U240
Acetic acid, (2,4-dichlorophenoxy)-	94-75-7	100 pounds	X	U240

ACETIC ACID, (2,4-DICHLOROPHENOXY)-
AGROTECT
AMIDOX
AMINOPIELIK 50SL
AMOXONE
AQUA-KLEEN
B-SELEKTONON
BASALCOAT
BH 2,4-D
BRUSH-RHAP
CHIPCO TURF HERBICIDE "D"
CHLOROXONE
CROP RIDER
CROTILIN
D 50
2,4-D ACID
2,4-D, SALTS AND ESTERS
2,4-D
DACAMINE
DEBROUSSAILLANT 600
DECAMINE
DED-WEED
DED-WEED LV-69
DEHERBAN
DESORMONE
(2,4-DICHLOROPHENOXY)ACETIC ACID
DICHLOROPHENOXYACETIC ACID
2,4-DICHLOROPHENOXYACETIC ACID
2,4-DICHLOROPHENOXYETHANOIC ACID
2,4-DICHLORPHENOXYACETIC ACID
DICLORDON
DICOPUR
DICOTOX
DINOXOL
DMA 6
DMA-4
DORMONE
EMULSAMINE BK
EMULSAMINE E-3
ENT 8,538
ENVERT 171
ENVERT DT
ESTERON
ESTERONE FOUR
FARMCO
FERNIMINE
FOREDEX 75
HEDONAL
HEDONAL (HERBICIDE)
IPANER
LAWN-KEEP
MIRACLE
MONOSAN
MONOSAN HERBI
MOTA MASKROS
NETAGRONE
NSC 423
2,4-PA
PENNAMINE
PIELIK
RHODIA
SALVO
SDMA
SUPER D WEEDONE
TRANSAMINE
TRINOXOL
U 46
U-5043
VERTON
VERTON 2D
VIDON 638
WEED TOX
WEED-RHAP
WEEDAR
WEEDONE
WEEDTROL

2,4-DICHLOROPHENOXYACETIC ACID

Chemical Identifiers

Hazards

Response Recommendations

Physical Properties

AEGLs (Acute Exposure Guideline Levels)

ERPGs (Emergency Response Planning Guidelines)

PACs (Protective Action Criteria)

Regulatory Information

EPA Consolidated List of Lists

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

OSHA Process Safety Management (PSM) Standard List

Alternate Chemical Names