Docosane
- CAS No.
- 629-97-0
- Chemical Name:
- Docosane
- Synonyms
- DOCOSANE;N-DOCOSANE;Docosane [Standard Material];ocosane;NSC 77139;ALKANE C22;Docosane 99%;Docosane >Docosane n-Docosane 0.5
- CBNumber:
- CB0771076
- Molecular Formula:
- C22H46
- Molecular Weight:
- 310.6
- MDL Number:
- MFCD00009348
- MOL File:
- 629-97-0.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 42-45 °C(lit.) |
|---|---|
| Boiling point | 369 °C(lit.) |
| Density | 0.778 g/mL at 25 °C(lit.) |
| vapor density | 10.8 (vs air) |
| vapor pressure | <1 mm Hg ( 21.1 °C) |
| refractive index | 1.4455 |
| Flash point | >230 °F |
| storage temp. | room temp |
| solubility | soluble in Benzene,Toluene |
| form | Crystalline Solid |
| color | White |
| Specific Gravity | 0.778 |
| Odor | at 100.00%. waxy |
| Water Solubility | Insoluble in water. Soluble in alcohol. |
| BRN | 1702206 |
| Henry's Law Constant | 5.4×10-8 mol/(m3Pa) at 25℃, Hilal et al. (2008) |
| Dielectric constant | 2.0(50℃) |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Cosmetics Ingredients Functions | PERFUMING |
| InChI | 1S/C22H46/c1-3-5-7-9-11-13-15-17-19-21-22-20-18-16-14-12-10-8-6-4-2/h3-22H2,1-2H3 |
| InChIKey | HOWGUJZVBDQJKV-UHFFFAOYSA-N |
| SMILES | CCCCCCCCCCCCCCCCCCCCCC |
| LogP | 11.47 at 25℃ |
| CAS DataBase Reference | 629-97-0(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | OW99Q363KO |
| EPA Substance Registry System | Docosane (629-97-0) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H335-H315-H319 | |||||||||
| Precautionary statements | P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29011000 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazardous Substances Data | 629-97-0(Hazardous Substances Data) | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Docosane price More Price(33)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 8.22046 | Docosane for synthesis | 629-97-0 | 50g | $86.9 | 2026-04-30 | Buy |
| Sigma-Aldrich | 134457 | Docosane 99% | 629-97-0 | 25g | $73.6 | 2026-04-30 | Buy |
| Sigma-Aldrich | 134457 | Docosane 99% | 629-97-0 | 100g | $115 | 2026-04-30 | Buy |
| Sigma-Aldrich | 442670 | Docosane analytical standard | 629-97-0 | 1000mg | $32.8 | 2022-05-15 | Buy |
| TCI Chemical | D0962 | Docosane >98.0%(GC) | 629-97-0 | 25g | $48 | 2026-04-30 | Buy |
Docosane Chemical Properties,Uses,Production
Preparation
(1) Mix 1650.5g (10mol) of n-hexane bromide with 3053.5g (10mol) of n-hexadecane bromide to form a bromide mixture for later use; (2) Weigh 483g (21mol) of metallic sodium and cut it into small strips with an area of approximately 1×3cm2 for later use; (3) Add 50g of the bromide mixture and 20g of metallic sodium to the reaction vessel, stir and heat to 80℃, remove the heat source, rely on the reaction for heating, and maintain at 80℃. At 120℃, the remaining bromoalkane mixture was continuously added dropwise, along with the remaining metallic sodium, maintaining a slight reflux. After the addition was complete, the temperature was controlled at 160℃ and kept constant for 2 hours. (4) 400g of 95% ethanol and 1000ml of water were added sequentially. The organic matter was separated, washed with water until neutral, dried with anhydrous magnesium sulfate, and the fraction at 260-280℃ was collected by distillation. The fraction was washed with 600g of concentrated potassium sulfate until the acid layer was light yellow. The organic phase was washed with water until neutral, dried, and 500g of 96% n-dodecane and 600g of 98% n-Docosane were collected by fractionation column. The obtained n-alkane content reached 96%-98%. The molar ratio of bromohexane to bromohexadecane was 1:1. The reaction vessel was a three-necked flask consisting of a stirrer, a separatory funnel, and a reflux condenser. The strong oxidant was concentrated sulfuric acid or acidic potassium permanganate.
Chemical Properties
colourless crystalline solid
Uses
It is employed as a perfuming agent in cosmetics industry. It is also used in organic synthesis, calibration, and temperature sensing equipment. Docosane is used to investigate commercially available waxes in the form of thin disc samples as possible diffraction intensity standards for macromolecular crystallography synchrotron beamlines.
Definition
ChEBI: Docosane is a straight-chain alkane with 22 carbon atoms. It has a role as a plant metabolite.
Application
Docosane (C22H46) is a long-chain alkane that can be used as an organic phase-change material for thermal energy storage. Pure docosane has a high latent heat of 256.1 J/g, but its thermal conductivity is relatively low, at only approximately 0.2–0.3 W/(m·K), which limits the rate of heat exchange during the thermal storage process. When combined with sponge-like graphene, both its latent heat (262.8 J/g or 262.2 J/g) and thermal conductivity (0.59 W/(m·K)) are enhanced. This composite material can be utilised in solar thermal energy storage systems as a phase-change thermal storage medium with high energy density and rapid thermal response[1].
General Description
Solid. Insoluble in water. Used in organic synthesis, calibration, and temperature sensing equipment.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
Saturated aliphatic hydrocarbons, such as N-DOCOSANE, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. When heated sufficiently or when ignited in the presence of air, oxygen or strong oxidizing agents, they burn exothermically to produce carbon dioxide and water.
Purification Methods
Crystallise docosane from EtOH or ether. [Beilstein 1 IV 572.]
References
[1] J.F. Li. (2014). Simultaneous enhancement of latent heat and thermal conductivity of docosane-based phase change material in the presence of spongy graphene. Solar Energy Materials and Solar Cells, 128, Pages 48-51. https://doi.org/10.1016/j.solmat.2014.05.018
Docosane Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| SEDIN Pionerr Technology & Industry Development limited | 0351-12179486 13233602527 | 1211028710@qq.com | China | 14 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| 3B Pharmachem (Wuhan) International Co.,Ltd. | 18930552037 | 3bsc@sina.com | China | 15813 | 69 |
| future industrial shanghai co., ltd | 400-0066400 13621662912 | sales@jonln.com | China | 1989 | 65 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Shandong Xiya Chemical Co., Ltd | 13355009207 13355009207 | 3007715519@qq.com | China | 18722 | 57 |
View Lastest Price from Docosane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-11 | n-Docosane
629-97-0
|
1KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | ||
 |
2026-09-02 | N-DOCOSANE
629-97-0
|
$1.00-100.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-07-28 | Docosane
629-97-0
|
1KG | 99% | 1000kgs | Shaanxi Dideu New Materials Co. Ltd |
-
- n-Docosane
629-97-0
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- N-DOCOSANE
629-97-0
- $1.00-100.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Docosane
629-97-0
- $0.00
- 99%
- Shaanxi Dideu New Materials Co. Ltd
