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pentacosane (Click)
CAS Number: 629-99-2
ECHA EC Number:211-123-6
Beilstein Number:1763638
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
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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
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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:
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 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
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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