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pentacosane (Click)
CAS Number: 629-99-2
ECHA EC Number: 211-123-6
Beilstein Number: 1763638
MDL: MFCD00009353
XlogP3: 13.10 (est)
Molecular Weight: 352.68944000
Formula: C25 H52
BioActivity Summary: listing
NMR Predictor: Predict
Category: natural substances and extractives
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
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IBM Patents: Obtain
Pubchem Patents: Search
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Physical Properties:
Appearance: white solid (est)
Assay: 97.00 to 100.00 % 
Food Chemicals Codex Listed: No
Melting Point: 53.00 to  55.00 °C. @ 760.00 mm Hg
Boiling Point: 401.00 to  402.00 °C. @ 760.00 mm Hg
Boiling Point: 169.00 to  170.00 °C. @ 0.05 mm Hg
Vapor Pressure: 0.000002 mm/Hg @ 25.00 °C. (est)
Flash Point: > 230.00 °F. TCC ( > 110.00 °C. )
logP (o/w): 13.444 (est)
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Organoleptic Properties:
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Cosmetic Information:
None found
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Santa Cruz Biotechnology
For experimental / research use only.
Sigma-Aldrich: Aldrich
Pentacosane 99%
For experimental / research use only.
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Safety Information:
European information :
Most important hazard(s):
None - None found.
  S 02 - Keep out of the reach of children.
S 24/25 - Avoid contact with skin and eyes.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
  Not determined
Dermal Toxicity:
  Not determined
Inhalation Toxicity:
  Not determined
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Safety in Use Information:
Category: natural substances and extractives
Recommendation for pentacosane usage levels up to:
 not for fragrance use.
Recommendation for pentacosane flavor usage levels up to:
 not for flavor use.
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Safety References:
EPI System: View Calculate predicted properties
EPA Substance Registry Services (TSCA): 629-99-2
EPA ACToR: Toxicology Data
National Institute of Allergy and Infectious Diseases: Data
WGK Germany: 3
DTP/NCI: 158663
Chemidplus: 0000629992
EPA/NOAA CAMEO: hazardous materials
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NIST Chemistry WebBook: Search Inchi
Pubchem (cid): 12406
Pubchem (sid): 134976771
Pherobase Floral: View
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
Golm Metabolome Database: Search
Export Tariff Code: 2901.10.5000
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
Wikipedia: View
RSC Learn Chemistry: View
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Potential Blenders and core components note
None Found
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Potential Uses:
None Found
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Natural Occurrence in: note
 cabocla flower oil brazil @ 3.40%
Data  GC  GRIN Trop Picture
 herniaria incana lam. oil greece @ 1.60%
Data  GC  GRIN Trop Picture
 jambu flower oil brazil @ 0.30%
Data  GC  GRIN Trop Picture
 narcissus absolute @ 2.14%
Data  GC  GRIN Trop Picture
 nepeta betonicifolia c.a. meyer oil turkey @ 0.70%
Data  GC  GRIN Trop Picture
 thevetia peruviana (pers.) k. schum. flower oil brazil @ 0.60%
Data  GC  GRIN Trop Picture
 witch hazel leaf oil @ 10.99%
Data  GC  GRIN Trop Picture
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PubMed: DPPH Scavenging, PRAP Activities and Essential Oil Composition of Edible Lathyrus ochrus L. (Cyprus Vetch, Luvana) from Cyprus.
PubMed: Chemical composition of the essential oil of Jacobaea maritima (L.) Pelser & Meijden and Jacobaea maritima subsp. bicolor (Willd.) B. Nord. & Greuter (Asteraceae) collected wild in Croatia and Sicily, respectively.
PubMed: Volatiles of Lysimachia paridiformis Var. Stenophylla, Lysimachia fortumei and Lysimachia chikungensis by HS-SPME-GC-MS.
PubMed: Bumblebee size polymorphism and worker response to queen pheromone.
PubMed: Chemical composition of essential oils and hydrosols from fresh flowers of Cerasus subhirtella and Cerasus serrulata from East China.
PubMed: Fruit cuticle composition of a melting and a nonmelting peach cultivar.
PubMed: [Study on volatile components from flowers of Gymnema sylvestre].
PubMed: Chemical composition and biological activity of the essential oil from leaves of Moringa oleifera Lam. cultivated in Mozambique.
PubMed: Characterization of aroma-active compounds in dry flower of Malva sylvestris L. by GC-MS-O analysis and OAV calculations.
PubMed: Comparison of chemical composition of Aerva javanica seed essential oils obtained by different extraction methods.
PubMed: High efficiency degradation crude oil by a novel mutant irradiated from Dietzia strain by 12C6+ heavy ion using response surface methodology.
PubMed: Chemical composition of the fatty oils of the seeds of Cleome viscosa accessions.
PubMed: Chemical Composition and In Vitro Cytotoxic Activity of Essential Oil of Leaves of Malus domestica Growing in Western Himalaya (India).
PubMed: Development and characterization of local anti-inflammatory implantation for the controlled release of the hexane extract of the flower-heads of Euryops pectinatus L. (Cass.).
PubMed: Phase transitions between the rotator phases of paraffin investigated using silicon microcantilevers.
PubMed: Gas-chromatography and electroantennogram analysis of saturated hydrocarbons of cruciferous host plants and host larval body extracts of Plutella xylostella for behavioural manipulation of Cotesia plutellae.
PubMed: [Chemical constituent from fruit of Aristolochia contorta].
PubMed: [Chemical constituents of roots of Saposhnikovia divaricata].
PubMed: [Study on the chemical constituents in the volatile oils of the flowers of Tibetan medicine Rhododendron anthopogon].
PubMed: Immunotoxicity activity of 1,2,4-trimethoxybenzene from the Paulownia coreana Uyeki. against Aedes aegypti L.
PubMed: Photo-oxidation of low-volatility organics found in motor vehicle emissions: production and chemical evolution of organic aerosol mass.
PubMed: In vitro study of antibacterial activity on multi-resistant bacteria and chemical composition of the chloroform extract of endemic Centaurea drabifolia subsp. cappadocica.
PubMed: Volatile secretions and epicuticular hydrocarbons of the beetle Ulomoides dermestoides.
PubMed: Intermediate-volatility organic compounds: a potential source of ambient oxidized organic aerosol.
PubMed: Inhibitory effects of Ephedra major Host on Aspergillus parasiticus growth and aflatoxin production.
PubMed: A contact sex pheromone component of the emerald ash borer Agrilus planipennis Fairmaire (Coleoptera: Buprestidae).
PubMed: Cuticular hydrocarbons and soldier defense secretions of Reticulitermes in southern California: a critical analysis of the taxonomy of the genus in North America.
PubMed: Isolation and characterization of a potential paraffin-wax degrading thermophilic bacterial strain Geobacillus kaustophilus TERI NSM for application in oil wells with paraffin deposition problems.
PubMed: The scent of the waggle dance.
PubMed: Cuticular hydrocarbon composition in pupal exuviae for taxonomic differentiation of six necrophagous flies.
PubMed: Structural phase transitions in pentacosane C25H52.
PubMed: Kairomones extracted from rice yellow stem borer and their influence on egg parasitization by Trichogramma japonicum ashmead.
PubMed: Compounds with DNA cleaving activity from Kadsura ananosma.
PubMed: Chemically mediated intraguild predator avoidance by aphid parasitoids: interspecific variability in sensitivity to semiochemical trails of ladybird predators.
PubMed: Characterization of waxes used in pictorial artworks according to their relative amount of fatty acids and hydrocarbons by gas chromatography.
PubMed: Cuticular hydrocarbon profiles and aggregation in four Periplaneta species (Insecta: Dictyoptera).
PubMed: Emissions of organic compounds and trace metals in fine particulate matter from motor vehicles: a tunnel study in Houston, Texas.
PubMed: The role of semiochemicals in the avoidance of the seven-spot ladybird, Coccinella septempunctata, by the aphid parasitoid, Aphidius ervi.
PubMed: [Supercritical CO2 extraction of fatty oils from bee pollen and its GC-MS analysis].
PubMed: Field validation of Aedes aegypti (Diptera: Culicidae) age estimation by analysis of cuticular hydrocarbons.
PubMed: Role of contact pheromones in mate recognition in Xylotrechus colonus.
PubMed: Effect of the entomopathogenic fungus, Entomophthora muscae (Zygomycetes: Entomophthoraceae), on sex pheromone and other cuticular hydrocarbons of the house fly, Musca domestica.
PubMed: Mating alters the cuticular hydrocarbons of female Anopheles gambiae sensu stricto and aedes Aegypti (Diptera: Culicidae).
PubMed: Cuticular hydrocarbons and novel alkenediol iacetates from wheat stem sawfly (Cephus cinctus): natural oxidation to pheromone components.
PubMed: Aedes aegypti (Diptera: Culicidae) age determination by cuticular hydrocarbon analysis of female legs.
PubMed: Potential for aging female Aedes aegypti (Diptera: Culicidae) by gas chromatographic analysis of cuticular hydrocarbons, including a field evaluation.
PubMed: Entomopathogenous fungi degrade epicuticular hydrocarbons of Triatoma infestans.
PubMed: Squash leaf glandular trichome volatiles: Identification and influence on behavior of female pickleworm moth [Diaphania nitidalis (Stoll.)] (Lepidoptera: Pyralidae).
PubMed: Cuticular hydrocarbon composition and phenotypic variability in sympatric populations of Ixodes ricinus ticks from Poland.
PubMed: Patterns of cuticular hydrocarbon variation and genetic similarity between natural populations of Amblyomma cajennense (Acari: Ixodidae).
PubMed: Tissue and chain length specificity of the fatty acyl-CoA elongation system in the American cockroach.
PubMed: Copulation releaser pheromone in body scales of female whitemarked tussock moth,Orgyia leucostigma (Lepidoptera: Lymantriidae): Identification and behavioral role.
PubMed: Diacylglycerol-carrying lipoprotein of hemolymph of the American cockroach: purification, characterization, and function.
PubMed: [Assimilation of n-alkanes with a varying length of the carbon chain by the yeast Candida guilliermondii].
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Soluble in:
 water, 2.899e-008 mg/L @ 25 °C (est)
Insoluble in:
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