Product Name

  • Name

    stearaldehyde

  • EINECS 211-346-9
  • CAS No. 638-66-4
  • Article Data134
  • CAS DataBase
  • Density 0.831g/cm3
  • Solubility
  • Melting Point 43.0 to 47.0 °C
  • Formula C18H36 O
  • Boiling Point 321.3°C at 760 mmHg
  • Molecular Weight 268.483
  • Flash Point 154.5°C
  • Transport Information
  • Appearance
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 638-66-4 (stearaldehyde)
  • Hazard Symbols
  • Synonyms Stearaldehyde(6CI,7CI,8CI);1-Octadecanal;1-Oxooctadecane;NSC 68100;Octadecanaldehyde;Octadecyl aldehyde;Stearyl aldehyde;n-Octadecanal;
  • PSA 17.07000
  • LogP 6.44680

Synthetic route

((E)-4-Octadec-1-enyl)-morpholine

((E)-4-Octadec-1-enyl)-morpholine

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With aq. acid for 1h; Ambient temperature;100%
stearic acid
57-11-4

stearic acid

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With 9-borabicyclo[3.3.1]nonane dimer; lithium dihydrido borata-bicyclo[3.3.0]nonane In tetrahydrofuran for 1h; Ambient temperature;99%
With thexylchloroborane-Me2SO4 In dichloromethane for 0.25h; Ambient temperature;98%
With thexylbromoborane dimethyl sulfide complex In carbon disulfide; dichloromethane at -20 - 20℃; for 1h;92%
sodium stearate
822-16-2

sodium stearate

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With 9-borabicyclo[3.3.1]nonane dimer In tetrahydrofuran for 1h; Ambient temperature;99%
lithium stearate
4485-12-5

lithium stearate

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With 9-borabicyclo[3.3.1]nonane dimer In tetrahydrofuran for 1h; Ambient temperature;99%
1-octadecanol
112-92-5

1-octadecanol

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With pyridinium chlorochromate In dichloromethane at 20℃; for 6h; Molecular sieve; Inert atmosphere;98%
With sodium bromite; 4-benzoxy-2,2,6,6-tetramethylpiperidine-N-oxyl; sodium hydrogencarbonate In dichloromethane; water for 6h; Ambient temperature;96%
With pyridine; oxygen; palladium diacetate In toluene at 80℃; for 2h;95%
Methyl stearate
112-61-8

Methyl stearate

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With diisobutylaluminium hydride In dichloromethane; toluene at -70℃; for 3h; Inert atmosphere;95%
With diisobutylaluminium hydride In toluene at -70℃; for 0.25h;30 % Spectr.
Stearoyl chloride
112-76-5

Stearoyl chloride

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With ammonium hydroxide; formic acid In diethyl ether; chloroform for 0.333333h; Ambient temperature;94%
With Amberlyst A-26 in the BH4(1-) form in column at 4-5 ml In hexane92.96%
With Pd-BaSO4; hydrogen
1-hexadecylcarboxylic acid
57-10-3

1-hexadecylcarboxylic acid

acrolein
107-02-8

acrolein

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With piperazine; 9-(2-chlorophenyl)acridine; tetrakis(acetonitrile)copper(I)tetrafluoroborate In dichloromethane at 25 - 27℃; for 14h; Reagent/catalyst; Solvent; Irradiation;87%
stearic acid ethyl ester
111-61-5

stearic acid ethyl ester

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With sodium tris(diethylamino)aluminum hydride In tetrahydrofuran; dodecane at 0℃; for 3h;84%
2-hexadecyloxirane
7390-81-0

2-hexadecyloxirane

lithium diethylamide
816-43-3

lithium diethylamide

A

n-Octadecanal
638-66-4

n-Octadecanal

B

1-diethylamino-octadecan-2-ol

1-diethylamino-octadecan-2-ol

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 12h; Yields of byproduct given;A n/a
B 83%
...Expand
stearamide
124-26-5

stearamide

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With lithium-tris(diethylamino)hydridoaluminate In tetrahydrofuran for 12h; Ambient temperature;83%
Multi-step reaction with 2 steps
1: thionyl chloride
2: tin (II)-chloride; hydrogen chloride; diethyl ether / und beim Verseifen des Reaktionsprodukts mit warmem Wasser
View Scheme
octadecanoic acid tert-butoxy-methyl-amide
778628-28-7

octadecanoic acid tert-butoxy-methyl-amide

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With diisobutylaluminium hydride In tetrahydrofuran at -50 - -30℃; for 2h;83%
2-hexadecyloxirane
7390-81-0

2-hexadecyloxirane

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With 2,2,6,6-tetramethylpiperidinyl-lithium In tetrahydrofuran; hexane at 20℃; for 12h;80%
With lithium N-tert-butylisopropylamide In tetrahydrofuran at 20℃; for 16h;42%
N-methoxy-N-methyloctadecanoylamide
80783-97-7

N-methoxy-N-methyloctadecanoylamide

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With diisobutylaluminium hydride In tetrahydrofuran at 0℃; for 0.5h;71%
2-hexadecyloxirane
7390-81-0

2-hexadecyloxirane

lithium dicyclohexylamide
4111-55-1

lithium dicyclohexylamide

A

n-Octadecanal
638-66-4

n-Octadecanal

B

1-Dicyclohexylamino-octadecan-2-ol

1-Dicyclohexylamino-octadecan-2-ol

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 12h;A 63%
B 17%
...Expand
N-methoxy-N-methyloctadecanoylamide
80783-97-7

N-methoxy-N-methyloctadecanoylamide

A

1-octadecanol
112-92-5

1-octadecanol

B

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With diisobutylaluminium hydride In tetrahydrofuran at -78℃; for 0.0833333h;A 25%
B 50%
2-hexadecyloxirane
7390-81-0

2-hexadecyloxirane

lithium diisopropyl amide
4111-54-0

lithium diisopropyl amide

A

n-Octadecanal
638-66-4

n-Octadecanal

B

1-Diisopropylamino-octadecan-2-ol

1-Diisopropylamino-octadecan-2-ol

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 12h;A 46%
B 26%
...Expand
2-hexadecyloxirane
7390-81-0

2-hexadecyloxirane

lithium diisopropyl amide
4111-54-0

lithium diisopropyl amide

A

octadecan-2-one
7373-13-9

octadecan-2-one

B

trans-octadec-2-en-1-ol
2831-86-9, 22104-84-3, 41207-34-5

trans-octadec-2-en-1-ol

C

n-Octadecanal
638-66-4

n-Octadecanal

D

1-Diisopropylamino-octadecan-2-ol

1-Diisopropylamino-octadecan-2-ol

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 12h; Product distribution; var. of lithium amide, ratio;A 4%
B 2%
C 27%
D 24%
...Expand
2-hydroxy-1-nonadecanol
39516-65-9

2-hydroxy-1-nonadecanol

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With lead(IV) acetate; acetic acid; benzene at 50 - 60℃;
selenous acid dioctadecyl ester
119482-65-4

selenous acid dioctadecyl ester

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
at 177℃; under 0.1 Torr; Irradiation.mit UV-Licht;
oleoyl alcohol
143-28-2

oleoyl alcohol

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With nickel at 250℃;
N-methyl-stearanilide
5840-71-1

N-methyl-stearanilide

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With lithium aluminium tetrahydride; diethyl ether
2-heptadecyl-1,3-diphenyl-imidazolidine
103268-08-2

2-heptadecyl-1,3-diphenyl-imidazolidine

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With hydrogenchloride; diethyl ether
sodium stearate
822-16-2

sodium stearate

calcium diformate
544-17-2

calcium diformate

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With cyclohexane at 300℃;
2,4,6-trihexadecyl-[1,3,5]trioxane

2,4,6-trihexadecyl-[1,3,5]trioxane

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With zinc(II) chloride
10-stearoyl-phenothiazine
5420-41-7

10-stearoyl-phenothiazine

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With tetrahydrofuran; lithium aluminium tetrahydride; diethyl ether
stearonitrile
638-65-3

stearonitrile

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With lithium aluminium tetrahydride; diethyl ether at -60℃; und anschliessend mit wss.Ammomiumchlorid;
With hydrogenchloride; diethyl ether; tin(ll) chloride und beim Verseifen des Reaktionsprodukts mit warmem Wasser;
(Z)-9-octadecenoyl chloride
112-77-6

(Z)-9-octadecenoyl chloride

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With lutidine; hydrogen; palladium on activated charcoal
N-hydroxysuccinimide ester of stearic acid
56776-02-4

N-hydroxysuccinimide ester of stearic acid

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With hydrogen; palladium on barium sulfate under 760 Torr;
N,N-dimethyloctadecanamide
3886-90-6

N,N-dimethyloctadecanamide

n-Octadecanal
638-66-4

n-Octadecanal

Conditions
ConditionsYield
With lithium diethoxyaluminum hydride In diethyl ether
n-Octadecanal
638-66-4

n-Octadecanal

octadecanal oxime
94377-17-0

octadecanal oxime

Conditions
ConditionsYield
With hydroxylamine hydrochloride; sodium hydroxide In ethanol; water at 70℃; for 2h;100%
n-Octadecanal
638-66-4

n-Octadecanal

A

hepatdecane
629-78-7

hepatdecane

B

carbon monoxide
201230-82-2

carbon monoxide

Conditions
ConditionsYield
With silicon nanowire array-supported rhodium nanoparticle catalyst at 150℃; under 750.075 Torr; for 24h; Inert atmosphere;A 99%
B n/a
malonic acid
141-82-2

malonic acid

n-Octadecanal
638-66-4

n-Octadecanal

(E)-3-eicosenoic acid
90492-20-9

(E)-3-eicosenoic acid

Conditions
ConditionsYield
Stage #1: malonic acid; n-Octadecanal With 4-methyl-morpholine at 80℃; for 8h; Knoevenagel condensation;
Stage #2: With sulfuric acid In water at 20℃; for 0.5h; Knoevenagel condensation; regioselective reaction;		96.1%
n-Octadecanal
638-66-4

n-Octadecanal

1-octadecanol
112-92-5

1-octadecanol

Conditions
ConditionsYield
With water; magnesium; cadmium(II) chloride In tetrahydrofuran for 0.25h;95%
With tri-n-butyl-tin hydride; silica gel In dichloromethane for 24h; Ambient temperature;82%
With acetic acid; zinc und nachfolgende Verseifung des erhaltenen Octadecylacetats mittels alkoholischer Kalilauge;
diethoxyphosphoryl-acetic acid ethyl ester
867-13-0

diethoxyphosphoryl-acetic acid ethyl ester

n-Octadecanal
638-66-4

n-Octadecanal

C22H42O2

C22H42O2

Conditions
ConditionsYield
Stage #1: diethoxyphosphoryl-acetic acid ethyl ester With sodium hydride In tetrahydrofuran at 0℃; for 0.333333h; Inert atmosphere;
Stage #2: n-Octadecanal In tetrahydrofuran at 0℃; for 0.333333h; Inert atmosphere;		95%
n-Octadecanal
638-66-4

n-Octadecanal

methyl 2-cyanoacetate
105-34-0

methyl 2-cyanoacetate

methyl 2-amino-5-hexadecyl-thiophene-3-carboxylate

methyl 2-amino-5-hexadecyl-thiophene-3-carboxylate

Conditions
ConditionsYield
With sulfur; triethylamine for 12h; Gewald Aminoheterocycles Synthesis; Reflux; Inert atmosphere;94%
n-Octadecanal
638-66-4

n-Octadecanal

p-aminoethylbenzoate
94-09-7

p-aminoethylbenzoate

ethyl 4-(octadecylamino)benzoate
55791-66-7

ethyl 4-(octadecylamino)benzoate

Conditions
ConditionsYield
Stage #1: n-Octadecanal; p-aminoethylbenzoate With acetic acid In tetrahydrofuran at 20℃; for 0.166667h;
Stage #2: With sodium tris(acetoxy)borohydride In tetrahydrofuran at 20℃;		93%
Stage #1: n-Octadecanal; p-aminoethylbenzoate With acetic acid In tetrahydrofuran at 20℃; for 0.166667h; Inert atmosphere;
Stage #2: With sodium tris(acetoxy)borohydride In tetrahydrofuran at 20℃; Inert atmosphere;		93%
n-Octadecanal
638-66-4

n-Octadecanal

acid ethyl ester of p-fluorophenylphosphinic acid

acid ethyl ester of p-fluorophenylphosphinic acid

(4-Fluoro-phenyl)-(1-hydroxy-octadecyl)-phosphinic acid ethyl ester

(4-Fluoro-phenyl)-(1-hydroxy-octadecyl)-phosphinic acid ethyl ester

Conditions
ConditionsYield
Ambient temperature;91%
nitromethane
75-52-5

nitromethane

n-Octadecanal
638-66-4

n-Octadecanal

1-Nitrononadecan-2-ol

1-Nitrononadecan-2-ol

Conditions
ConditionsYield
With Amberlyst A-21 In diethyl ether for 48h; Henry condensation; Heating;89%
n-Octadecanal
638-66-4

n-Octadecanal

stearic acid
57-11-4

stearic acid

Conditions
ConditionsYield
With dihydrogen peroxide In water at 100℃; for 6h; Catalytic behavior; Green chemistry;87%
n-Octadecanal
638-66-4

n-Octadecanal

(carbethoxyethylidene)triphenylphosphorane
21382-82-1

(carbethoxyethylidene)triphenylphosphorane

ethyl (E)-2-methyleicos-2-enoate
153338-09-1

ethyl (E)-2-methyleicos-2-enoate

Conditions
ConditionsYield
In dichloromethane for 1h; Ambient temperature;84%
In dichloromethane at 20℃;
n-Octadecanal
638-66-4

n-Octadecanal

O-tert-butyl-L-serine methyl ester hydrochloride
17114-97-5

O-tert-butyl-L-serine methyl ester hydrochloride

N-octadecyl-O-tert-butylserine methyl ester
1162684-90-3

N-octadecyl-O-tert-butylserine methyl ester

Conditions
ConditionsYield
Stage #1: O-tert-butyl-L-serine methyl ester hydrochloride With triethylamine In 1,2-dichloro-ethane for 0.25h;
Stage #2: n-Octadecanal With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; Inert atmosphere;		84%
With sodium tris(acetoxy)borohydride
n-Octadecanal
638-66-4

n-Octadecanal

ethyl 2-((1R,2R,5R)-2-hydroxypinan-3-imino)glycinate
127593-79-7

ethyl 2-((1R,2R,5R)-2-hydroxypinan-3-imino)glycinate

ethyl {1R-[1α,2β,3(2R,3R),5α]}-3-hydroxy-2-{(2-hydroxy-2,6,6-trimethylbicyclo[3.1.1]hept-3-ylidene)amino}icosanoate

ethyl {1R-[1α,2β,3(2R,3R),5α]}-3-hydroxy-2-{(2-hydroxy-2,6,6-trimethylbicyclo[3.1.1]hept-3-ylidene)amino}icosanoate

Conditions
ConditionsYield
With tris(ethoxy)monochloro titanium; triethylamine In dichloromethane at 0℃;83%
cycl-isopropylidene malonate
2033-24-1

cycl-isopropylidene malonate

n-Octadecanal
638-66-4

n-Octadecanal

2,2-dimethyl-5-(octadecylidene)-1,3-dioxane-4,6-dione

2,2-dimethyl-5-(octadecylidene)-1,3-dioxane-4,6-dione

Conditions
ConditionsYield
With pyrrolidine acetic acid In neat (no solvent) at 0℃; for 1.5h; Knoevenagel Condensation; Green chemistry;83%
Stage #1: cycl-isopropylidene malonate; n-Octadecanal With piperdinium acetate In dichloromethane at 0℃; for 0.75h; Knoevenagel Condensation;
Stage #2: In dichloromethane at 20℃; for 0.25h; Knoevenagel Condensation; Molecular sieve;		83%
n-Octadecanal
638-66-4

n-Octadecanal

eschenmoser's salt
33797-51-2

eschenmoser's salt

2-Methylene-octadecanal
852525-43-0

2-Methylene-octadecanal

Conditions
ConditionsYield
In dichloromethane at 20℃;82%
n-Octadecanal
638-66-4

n-Octadecanal

(tert-Butoxycarbonylmethylene)triphenylphosphorane
86302-43-4

(tert-Butoxycarbonylmethylene)triphenylphosphorane

tert-butyl (2E)-2-octadecenoate

tert-butyl (2E)-2-octadecenoate

Conditions
ConditionsYield
In dichloromethane at 25℃; for 12h; Wittig Rearrangement;82%
In dichloromethane at 20℃; for 12h; Wittig Olefination;81.7%
n-Octadecanal
638-66-4

n-Octadecanal

methyl beta-D-glucopyranoside
709-50-2

methyl beta-D-glucopyranoside

C25H48O6

C25H48O6

Conditions
ConditionsYield
With toluene-4-sulfonic acid; orthoformic acid triethyl ester In N,N-dimethyl-formamide at 70℃; under 165.017 Torr; for 5h;81%
n-Octadecanal
638-66-4

n-Octadecanal

{[(difluoromethyl)selanyl]methyl}benzene

{[(difluoromethyl)selanyl]methyl}benzene

Se-(difluoromethyl) octadecaneselenoate

Se-(difluoromethyl) octadecaneselenoate

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) In 1,2-dichloro-ethane at 50℃; for 24h; Inert atmosphere;81%

Octadecanal Specification

Octadecanal, is also named as stearaldehyde; octadecanaldehyde,octadecanal; 1-Octadecanone; Octadecanaldehyde Octadecyl Aldehyde Stearaldehyde Stearyl Aldehyde. With the CAS NO.638-66-4, Octodecanal is a long-chain aldehyde, with the chemical formula C18H36O. 
Octadecanal is used by several species of insect as a pheromone.

Physical properties about Octadecanal are: (1)ACD/LogP: 8.046; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 8.05; (4)ACD/LogD (pH 7.4): 8.05; (5)ACD/BCF (pH 5.5): 767778.20; (6)ACD/BCF (pH 7.4): 767778.20; (7)ACD/KOC (pH 5.5): 567834.10; (8)ACD/KOC (pH 7.4): 567834.10; (9)#H bond acceptors: 1; (10)#Freely Rotating Bonds: 16; (11)Index of Refraction: 1.443; (12)Molar Refractivity: 85.627 cm3; (13)Molar Volume: 322.975 cm3; (14)Polarizability: 33.945 10-24cm3; (15)Surface Tension: 30.2040004730225 dyne/cm; (16)Density: 0.831 g/cm3; (17)Flash Point: 154.486 °C; (18)Enthalpy of Vaporization: 56.307 kJ/mol; (19)Boiling Point: 321.317 °C at 760 mmHg

You can still convert the following datas into molecular structure:
(1)InChI=1S/C18H36O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h18H,2-17H2,1H3;
(2)InChIKey=FWWQKRXKHIRPJY-UHFFFAOYSA-N;
(3)SmilesC(CCCCCCCCC)CCCCCCCC=O

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