2',4'-Dihydroxypropiophenone
- CAS NO.:5792-36-9
- Empirical Formula: C9H10O3
- Molecular Weight: 166.17
- MDL number: MFCD00002280
- EINECS: 227-329-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-03-27 16:59:26
What is 2',4'-Dihydroxypropiophenone?
Chemical properties
light yellow crystals or crystalline powder
Preparation
Preparation by reaction of propionic acid with resorcinol,
in the presence of zinc chloride (Nencki reaction), at reflux (160–165°) ? for 15 min, at 150° for 20 min
in the presence of boron trifluoride for 2 h at 70° (79%), at 80° (67%) ? or at 105–108° for 15 min (71%)
in the presence of polyphosphoric acid for 10–20 min in a boiling water bath ? (65%)
in the presence of 70% perchloric acid at reflux for 30 min (70%)
in the presence of Amberlite IR-120 (cation exchange resin sulfonic acid type) ? at 160° for 2–3 h (76%)
Preparation by reaction of propionitrile with resorcinol (Hoesch reaction) (75%) (65%) (46%)(35%)
Preparation by reaction of propionic anhydride with resorcinol
in the presence of Amberlite IR-120 (cation exchange resin sulfonic acid ? type) at 160° for 2–3 h (82%)
in the presence of concentrated sulfuric acid (small drops) at 130° for some ? min (60%)
Also obtained by Fries rearrangement of resorcinol dipropionate
with aluminium chloride at 180–185° for 90 min (25%)
with boron trifluoride, in the presence of resorcinol, at 75° for 1 h (83%)
Also obtained by reaction of ethylmagnesium bromide with 2,4-dihydroxy-N, N-diethylbenzamide in refluxing benzene (12%).
Properties of 2',4'-Dihydroxypropiophenone
Melting point: | 95-98 °C(lit.) |
Boiling point: | 178 °C / 7mmHg |
Density | 1.1708 (rough estimate) |
refractive index | 1.5260 (estimate) |
pka | 8.03±0.40(Predicted) |
form | powder to crystal |
color | Light yellow to Yellow to Orange |
BRN | 1238635 |
CAS DataBase Reference | 5792-36-9(CAS DataBase Reference) |
Safety information for 2',4'-Dihydroxypropiophenone
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 2',4'-Dihydroxypropiophenone
InChIKey | LLBBBYLDTDJMNU-UHFFFAOYSA-N |
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