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4-Chlorobenzaldehyde

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CAS:104-88-1
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4-Chlorobenzaldehyde Basic information
Product Name:4-Chlorobenzaldehyde
Synonyms:p-chlorobenzenecarboxaldehyde;Benzaldehyde,4-chloro-;benzaldehyde,-chloro-;p-chloro-benzaldehyd;p-Chlorobenzaldehyde 4-Chlorobenzaldehyde;4-CHLOROBENZALDEHYDE 98% (GC);4-Chlorobenzaldehyde, 98.5+%;4-CHLOROBENZYLALDEHYDE
CAS:104-88-1
MF:C7H5ClO
MW:140.57
EINECS:203-247-4
Product Categories:Benzaldehyde;Aldehydes;C7;Carbonyl Compounds;FINE Chemical & INTERMEDIATES;Aromatic Aldehydes & Derivatives (substituted);Pyridines ,Halogenated Heterocycles;intermediate;Pesticides intermediate;1;104-88-1;bc0001
Mol File:104-88-1.mol
4-Chlorobenzaldehyde Structure
4-Chlorobenzaldehyde Chemical Properties
Melting point 46 °C
Boiling point 213-214℃
density 1.196
vapor density 0.6 (vs air)
vapor pressure 8.75 atm ( 21 °C)
refractive index 1.5550 (estimate)
Fp 52 °F
storage temp. Store below +30°C.
solubility 935mg/l
form Liquid
color White to pale yellow
Water Solubility 935 mg/L (20 ºC)
Sensitive Air Sensitive
BRN 385858
Dielectric constant72(0.0℃)
Stability:Stable, but air and light-sensitive. Incompatible with strong bases, strong reducing agents, strong oxidizing agents.
InChIKeyAVPYQKSLYISFPO-UHFFFAOYSA-N
LogP2.34 at 25℃ and pH7
CAS DataBase Reference104-88-1(CAS DataBase Reference)
NIST Chemistry ReferenceBenzaldehyde, 4-chloro-(104-88-1)
EPA Substance Registry Systemp-Chlorobenzaldehyde (104-88-1)
Safety Information
Hazard Codes F,C,N,Xn,Xi
Risk Statements 22-36/37/38-51/53-36/38
Safety Statements 26-61-37/39-36
RIDADR UN 1219 3/PG 2
WGK Germany 2
RTECS CU5076000
8-9
Autoignition Temperature302 °C
TSCA Yes
HazardClass 9
PackingGroup III
HS Code 29130000
ToxicityLD50 orally in Rabbit: 840 mg/kg LD50 dermal Rat 5000 mg/kg
MSDS Information
ProviderLanguage
PCAD English
SigmaAldrich English
ACROS English
ALFA English
4-Chlorobenzaldehyde Usage And Synthesis
Chemical Properties4-chlorobenzaldehyde appears as colourless to light yellow crystalline powder. Insoluble in water, easily soluble in ethanol, ether, benzene, soluble in water, acetone. Can be volatilized with water vapor. It can produced by the oxidation of 4-chlorobenzyl alcohol. 4-chlorobenzaldehyde is the intermediate of fungicide tebuconazole and plant growth regulator uniconazole.
Uses4-Chlorobenzaldehyde is used as an intermediate for the manufacture of dyestuffs, optical brighteners, pharmaceuticals, agricultural chemicals and metal finishing products.
Preparation4-Chlorobenzaldehyde can be obtained by chlorinated hydrolysis of p-chlorotoluene: add p-chlorotoluene and phosphorus trichloride to the reaction pot, raise the temperature to 155°C under light and pass chlorine. Control the temperature at 160-170℃ and pass chlorine to the calculated amount to obtain the chlorination solution. Add it to concentrated sulfuric acid with stirring, and stir for 5h at room temperature. let it stand and stratify, take the lower layer into ice water to crystallize, and filter it when it is cold to below 5℃. The filter cake was washed with ice water to obtain the crude product, distilled under reduced pressure and collected 108-111℃ (3.33kPa) fraction to obtain p-chlorobenzaldehyde.
Synthesis Reference(s)Synthetic Communications, 26, p. 1, 1996 DOI: 10.1080/00397919608003856
Tetrahedron Letters, 43, p. 1395, 2002 DOI: 10.1016/S0040-4039(02)00027-8
General DescriptionColorless to yellow powder or white crystalline solid. Pungent odor.
Air & Water Reactions4-Chlorobenzaldehyde is sensitive to exposure to air. Insoluble in water.
Reactivity Profile4-Chlorobenzaldehyde is sensitive to exposure to air. 4-Chlorobenzaldehyde is also sensitive to light. REACTIVITY: 4-Chlorobenzaldehyde is incompatible with strong bases, strong oxidizers and strong reducing agents.
Fire Hazard4-Chlorobenzaldehyde is combustible.
Purification MethodsCrystallise it from EtOH/water (3:1), then sublime it twice at ~50o/2mm. [Beilstein 7 H 235, 7 IV 568.]
Tag:4-Chlorobenzaldehyde(104-88-1) Related Product Information
cyclamen aldehyde 1,3-Dichlorobenzene Chlorphenamine maleate 2,4-Dichlorobenzyl chloride ​4-Chlorophenoxyacetic acid sodium salt 4'-CHLOROACETANILIDE 4-Chlorophenylacetic acid 1,2-Dichlorobenzene 1-Nonanal 4-Chlorophenoxyacetic acid 4-Chlorobenzyl alcohol Paraldehyde 4-Chlorobenzoic acid 4-Chlorobenzyl cyanide 4-Chlorobenzonitrile 4-Chloroanisole 4-Methylbenzyl chloride 4-Fluorobenzoic acid