4-碘苯氧基乙酸
4-Iodophenoxyacetic acid
CAS: 1878-94-0
Molecular Formula: C8H7IO3
4-碘苯氧基乙酸 - Names and Identifiers
| Name | 4-Iodophenoxyacetic acid |
| Synonyms | 4-Iodo pyridine (4-iodophenoxy)acetate 4-IODOPHENOXYACETICACIDE 4-IODOPHENOXYACETIC ACID P-IODOPHENOXYACETIC ACID 4-Iodophenoxyacetic acid Acetic acid, 2-(4-iodophenoxy)- |
| CAS | 1878-94-0 |
| EINECS | 217-531-0 |
| InChI | InChI=1/C8H7IO3/c9-6-1-3-7(4-2-6)12-5-8(10)11/h1-4H,5H2,(H,10,11)/p-1 |
4-碘苯氧基乙酸 - Physico-chemical Properties
| Molecular Formula | C8H7IO3 |
| Molar Mass | 278.04 |
| Density | 1.8227 (estimate) |
| Melting Point | 154-157°C(lit.) |
| Boling Point | 358.5±22.0 °C(Predicted) |
| Flash Point | 170.6°C |
| Vapor Presure | 9.16E-06mmHg at 25°C |
| Appearance | White to light yellow powder |
| Color | White to Almost white |
| BRN | 2259999 |
| pKa | pK1:3.16 (25°C) |
| Storage Condition | Room Temprature |
| Sensitive | Light Sensitive |
| MDL | MFCD00014359 |
| Physical and Chemical Properties | Sensitivity: Light Sensitive WGK Germany:3 |
4-碘苯氧基乙酸 - Risk and Safety
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| HS Code | 29189900 |
4-碘苯氧基乙酸 - Reference Information
Open Data Verified Data
| use | as a growth promoter, it can promote the metabolism of pig body, fattening and fattening. Used as a plant growth regulator, it has the effect of accelerating cell division and differentiation |
| Production method | Using p-aminophenol as raw material, it is diazotized and replaced to generate p-iodophenol, and then condensed with chloroacetic acid to obtain iodophenoxy acid. The sodium nitrite solution was slowly added to the mixture of p-aminophenol, water and sulfuric acid at -5°C, and then the reaction continued for 20min. Add the diazotized liquid and copper powder to the potassium iodide solution successively, and react at 75-80 ℃ until no nitrogen escapes. After cooling, it is extracted with chloroform, the extract is washed with sodium thiosulfate solution, and then the chloroform is recovered by distillation, and the fraction at 135-140 ℃(61.3kPa) is collected, which is p-iodophenol. Add p-iodophenol and chloroacetic acid into sodium hydroxide solution and react at 100 ℃ for 3-6h. Add hydrochloric acid to adjust PH to 3-5 after cooling. Extract with ether, wash the extract with water, and then use sodium carbonate solution to form a sodium salt. Separate the water layer, acidify with hydrochloric acid, and precipitate crystals. After separation, the finished product of p-iodophenoxyacetic acid was obtained by recrystallization with 50% ethanol. |
Last Update：2024-09-20 09:47:55
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