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| CAS No.: | 93-76-5 |
|---|---|
| Name: | (2,4,5-Trichlorophenoxy)acetic acid |
| Article Data: | 17 |
| Molecular Structure: | |
|
|
|
| Formula: | C8H5Cl3O3 |
| Molecular Weight: | 255.485 |
| Synonyms: | Aceticacid, (2,4,5-trichlorophenoxy)- (8CI,9CI);(2,4,5-Trichlorophenoxy)acetic acid;2,4,5-T;Arbokan;BCF-Bushkiller;Forst U 46;Fortex;NSC 430;Trichlorophenoxyacetic acid;Trioxon;Verton 2T; |
| EINECS: | 202-273-3 |
| Density: | 1.592 g/cm3 |
| Melting Point: | 154-158 °C(lit.) |
| Boiling Point: | 376.3 °C at 760 mmHg |
| Flash Point: | 181.4 °C |
| Appearance: | white to light tan odourless solid |
| Hazard Symbols: |
 Xn, N, F
|
| Risk Codes: | 22-36/37/38-50/53-36-20/21/22-11 |
| Safety: | 24-60-61-36/37-26 |
| Transport Information: | UN 2811 6.1/PG 3 |
| PSA: | 46.53000 |
| LogP: | 3.11020 |
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Chemistry
IUPAC Name: 2-(2,4,5-Trichlorophenoxy)acetic acid
Product Name: 2,4,5-Trichlorophenoxyacetic acid
The MF of 2-(2,4,5-Trichlorophenoxy)acetic acid (CAS NO.93-76-5) is C8H5Cl3O3.
The MW of 2-(2,4,5-Trichlorophenoxy)acetic acid (CAS NO.93-76-5) is 255.48.
Synonyms of 2-(2,4,5-Trichlorophenoxy)acetic acid (CAS NO.93-76-5): (2,4,5-Trichloor-fenoxy)-azijnzuur ; (2,4,5-Trichloor-fenoxy)-azijnzuur[qr] ; (2,4,5-Trichlorophenoxy)-aceticacid ; (2,4,5-Trichlor-phenoxy)-essigsaeure ; (2,4,5-Trichlor-phenoxy)-essigsaeure[qr] ; 2,4,5-Trichlorophenoxyacetic acid ; 2,4,5-Trichlorophenoxyacetica
Product Categories: Method Specific;Oeko-Tex Standard 100;PesticidesAlphabetic;TA - TE
Stability: Stable. Incompatible with strong bases, strong oxidizing agents, alkali metals, amines, alcohols. Reacts with many common metals
white to light tan odourless solid
Index of Refraction: 1.585
EINECS: 202-273-3
Density: 1.592 g/ml
Flash Point: 181.4 °C
Boiling Point: 376.3 °C
Melting Point: 154-158 °C
Storage temp: 0-6 °C
Merck: 13,9111
Uses
2-(2,4,5-Trichlorophenoxy)acetic acid (CAS NO.93-76-5) is to defoliate broad-leafed plants.
Toxicity Data With Reference
| 1. | mmo-bcs 1 nmol/plate | MSERDS Microbiology Series. 5 (1981),93. | ||
| 2. | cyt-grb-ipr 250 mg/kg | MUREAV Mutation Research. 65 (1979),83. | ||
| 3. | orl-rat TDLo:6 mg/kg (female 8D post):REP | EXPEAM Experientia. 39 (1983),891. | ||
| 4. | orl-rat TDLo:100 mg/kg (female 11D post):TER | BEXBAN Bulletin of Experimental Biology and Medicine. Translation of BEBMAE. 76 (1973),831. | ||
| 5. | orl-mus TDLo:3379 mg/kg/33W-C:NEO | BJCAAI British Journal of Cancer. 33 (1976),626. | ||
| 6. | scu-mus TDLo:215 mg/kg:ETA | NTIS** National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) PB223-159 . | ||
| 7. | orl-rat LD50:300 mg/kg | RREVAH Residue Reviews. 10 (1965),97. | ||
| 8. | skn-rat LD50:1535 mg/kg | FAATDF Fundamental and Applied Toxicology. 7 (1986),299. | ||
| 9. | orl-mus LD50:242 mg/kg | RPZHAW Roczniki Panstwowego Zakladu Higieny. 31 (1980),373. | ||
| 10. | orl-dog LD50:100 mg/kg | PAREAQ Pharmacological Reviews. 14 (1962),225. | ||
Consensus Reports
IARC Cancer Review: Group 2B IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 156.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 15 ,1977,p. 273.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate
| 1. | Evidence ; Human Limited Evidence . Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program. | IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 15 ,1977,p. 273.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 41 ,1986,p. 357.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) |
Standards and Recommendations:
OSHA PEL: TWA 10 mg/m3
ACGIH TLV: TWA 10 mg/m3; Not Classifiable as a Human Carcinogen
DFG MAK: 10 mg/m3
Safety Profile
Poison by ingestion. Moderately toxic by skin contact. Questionable carcinogen with experimental neoplastigenic, tumorigenic, and teratogenic data. Experimental reproductive effects. Mutation data reported. A highly toxic chlorinated phenoxy acid herbicide that is rapidly excreted after ingestion. Readily absorbed by inhalation and ingestion routes, slowly by skin contact. Signs of intoxication include weakness, lethargy, anorexia, diarrhea, ventricular fibrillation and/or cardiac arrest, and death. The teratogenicity is due in part to 2,3,7,8-TCDD, which is present as a contaminant (ARENAA 17,123,72). When heated to decomposition it emits toxic fumes of Cl−. See also TCDD and CHLOROPHENOLS.Safety information of 2-(2,4,5-Trichlorophenoxy)acetic acid (CAS NO.93-76-5):
Hazard Codes 
Xn,
N,
F
Risk Statements
36/37/38 Irritating to eyes, respiratory system and skin
50/53 Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
20/21/22 Harmful by inhalation, in contact with skin and if swallowed
11 Highly Flammable
Safety Statements
24 Avoid contact with skin
60 This material and/or its container must be disposed of as hazardous waste
61 Avoid release to the environment. Refer to special instructions safety data sheet
36/37 Wear suitable protective clothing and gloves
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
RIDADR UN 2811 6.1/PG 3
WGK Germany 3
RTECS AJ8400000
HazardClass 6.1(b)
PackingGroup III
Standards and Recommendations
OSHA PEL: TWA 10 mg/m3
ACGIH TLV: TWA 10 mg/m3; Not Classifiable as a Human Carcinogen
DFG MAK: 10 mg/m3
Analytical Methods
For occupational chemical analysis use NIOSH: 2,4-D and 2,4,5-T, 5001.
Specification
2,4,5-Trichlorophenoxyacetic acid (2,4,5-T) , a synthetic auxin, is a chlorophenoxy acetic acid herbicide used to defoliate broad-leafed plants. It was developed in the late 1940s and was widely used in the agricultural industry until being phased out, starting in the late 1970s due to toxicity concerns. Agent Orange, a defoliant used by the U.S. in the Vietnam War, was equal parts 2,4,5-T and 2,4-D. 2,4,5-Trichlorophenoxyacetic acid is a weak acid. Reacts with organic and inorganic bases to form water-soluble salts and with alcohols to form esters. Incompatible with strong oxidizing agents and strong bases. Can corrode metals, especially if moist. May harm painted surfaces .