Name | Phenoxyacetic acid |
Synonyms | FEMA 2872 phenoxyacetate Phenoxyacetic acid RARECHEM AL BO 0458 phenoxyethanoic acid o-Phenylglycolic acid O-PHENYLGLYCOLIC ACID PHENYLOXYL ACETIC ACID 2-cyclohexyloxyacetate Glycolic acid phenyl ether Phenoxymethylpenicillin EP Impurity B |
CAS | 122-59-8 |
EINECS | 204-556-7 |
InChI | InChI=1/C8H8O3/c9-8(10)6-11-7-4-2-1-3-5-7/h1-5H,6H2,(H,9,10)/p-1 |
InChIKey | LCPDWSOZIOUXRV-UHFFFAOYSA-N |
Molecular Formula | C8H8O3 |
Molar Mass | 152.15 |
Density | 1.2143 (rough estimate) |
Melting Point | 98-100 °C (lit.) |
Boling Point | 285 °C |
Flash Point | 165 °C |
JECFA Number | 1026 |
Water Solubility | 0.1-0.5 g/100 mL at 17 ºC |
Solubility | ethanol: soluble10%, clear, colorless |
Vapor Presure | 0.00135mmHg at 25°C |
Appearance | White crystalline powder |
Color | White |
Merck | 14,7254 |
BRN | 907949 |
pKa | 3.17(at 25℃) |
Storage Condition | Store below +30°C. |
Stability | Stable. Substances to be avoided include strong bases, strong oxidizing agents. Combustible. |
Refractive Index | 1.4447 (estimate) |
MDL | MFCD00004296 |
Physical and Chemical Properties | Melting point 98-101°C boiling point 285°C flash point 165°C water-soluble 0.1-0.5g/100 mL at 17°C |
Use | Used in the manufacture of dyes, drugs, pesticides, etc., can also be used as fungicides |
Hazard Symbols | Xn - Harmful |
Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection |
UN IDs | UN 3345 6.1/ PGIII |
WGK Germany | 3 |
RTECS | AJ2230000 |
TSCA | Yes |
HS Code | 29189090 |
Hazard Class | 6.1 |
Packing Group | III |
Toxicity | LD50 orally in Rabbit: 1500 mg/kg LD50 dermal Rabbit > 5000 mg/kg |
Raw Materials | Phenol Chloroacetic acid |
FEMA | 2872 | PHENOXYACETIC ACID |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
overview | phenoxyacetic acid is naturally found in cocoa beans and has a sour sweet fragrance and a honey-like taste. Appearance is crystalline solid, melting point 98~100 ℃, boiling point 285 ℃ (decomposition). According to relevant data, acute toxicity data of phenoxyacetic acid: oral LD50>5g/kg (rats), skin test LD50>5g/kg (rabbits). It can be made of phenol and monochloroacetic acid as raw materials, condensed in sodium hydroxide solution, formed into sodium phenoxyacetate, and then acidified. Phenoxyacetic acid is recognized as GRAS by FEMA, FEMA No. 2872, and approved by FDA for consumption, and is included in the list of artificial edible spices that are allowed to be temporarily used in food without harming human health by the European Council. Can be used in edible essence and daily chemical essence formula. |
Uses | Used to make dyes, drugs, pesticides, etc., and can also be used as a fungicide Phenoxyacetic acid is an intermediate of herbicides 2,4-drops and 2,4-drops of butyl ester. This product is an intermediate of herbicides, plant hormones and central nervous system stimulants, and is also a reagent for the determination of thorium. |
Production method | Phenoxyacetic acid is obtained by condensation of phenol and chloroacetic acid in an alkaline solution, and then acidification. the preparation method is to add phenol into the reaction kettle, add equimolar sodium hydroxide aqueous solution, add chloroacetic acid and sodium hydroxide aqueous solution dropwise at 100~110 ℃ respectively, keep the pH of the reaction solution at 10~11, finish dropwise addition, react at 100~110 ℃ for 30min, add hydrochloric acid to neutralize until pH = 1~2, precipitate phenoxyacetic acid, cool and filter to obtain white solid products. |