2,3-Dimethylbutane
- CAS No.
- 79-29-8
- Chemical Name:
- 2,3-Dimethylbutane
- Synonyms
- DIISOPROPYL;DIMETHYLBUTANE;2,3-Dimethybutane;NSC 24837;Biisopropyl;DIISOPROPANE;2.3-DiMethylbu;(CH3)2CHCH(CH3)2;2,3-DIMETHYLBUTANE;dimethyl-2,3butane
- CBNumber:
- CB6122117
- Molecular Formula:
- C6H14
Lewis structure
- Molecular Weight:
- 86.18
- MDL Number:
- MFCD00008925
- MOL File:
- 79-29-8.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| 2,3-Dimethylbutane analytical standard | 39760 | 5ml | $81.1 |
| 2,3-Dimethylbutane analytical standard | 39760 | 10ml | $118 |
| 2,3-Dimethylbutane >98.0%(GC) | D0690 | 5mL | $25 |
| 2,3-Dimethylbutane >98.0%(GC) | D0690 | 25mL | $46 |
| 2,3-Dimethylbutane 98% | D151602 | 100ml | $108 |
| More product size | |||
| Melting point | -129 °C |
|---|---|
| Boiling point | 58 °C(lit.) |
| Density | 0.662 g/mL at 25 °C(lit.) |
| vapor density | 3 (vs air) |
| vapor pressure | 7.41 psi ( 37.7 °C) |
| refractive index |
n |
| Flash point | −28 °F |
| storage temp. | Flammables area |
| solubility | In methanol: 495, 593, 760, and 1,700 g/L at 5, 10, 15, and 20 °C, respectively. Miscible at higher temperatures (Kiser et al., 1961). |
| form | Liquid |
| pka | >14 (Schwarzenbach et al., 1993) |
| color | Colorless |
| explosive limit | ~7.7% |
| Odor Threshold | 0.42ppm |
| Water Solubility | Soluble in water (1mg/ml @22°C), DMSO, ethanol, acetone. |
| Thermal Conductivity | 0.1003 W/(m·K) at 25 ℃ |
| Specific Heat Capacity | Cp(liquid): 2.2 J/(g·K), at 25℃ |
| BRN | 1730737 |
| Henry's Law Constant | 1.28(atmm3/mol) at 25 °C (Mackay and Shiu, 1981) |
| Dielectric constant | 1.8899999999999999 |
| Exposure limits | ACGIH TLV: TWA and STEL for all isomers except n-hexane are 500 and 1,000 ppm, respectively (adopted). |
| Stability | Stable. Flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, oxygen. |
| Major Application | petroleum |
| InChI | 1S/C6H14/c1-5(2)6(3)4/h5-6H,1-4H3 |
| InChIKey | ZFFMLCVRJBZUDZ-UHFFFAOYSA-N |
| SMILES | CC(C)C(C)C |
| LogP | 3.42 |
| CAS DataBase Reference | 79-29-8(CAS DataBase Reference) |
| FDA UNII | 68ISQ7A432 |
| EPA Substance Registry System | 2,3-Dimethylbutane (79-29-8) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H315-H336-H304-H411-H225 | |||||||||
| Precautionary statements | P501-P273-P240-P261-P210-P233-P243-P241-P242-P271-P264-P280-P370+P378-P391-P331-P362+P364-P303+P361+P353-P332+P313-P301+P310-P304+P340+P312-P403+P233-P403+P235-P405 | |||||||||
| target organs | Central nervous system | |||||||||
| PPE | Eyeshields, Faceshields, Gloves | |||||||||
| Hazard Codes | F,Xn,N | |||||||||
| Risk Statements | 11-65-67-51/53-38 | |||||||||
| Safety Statements | 16-23-33-62-61-29-9 | |||||||||
| RIDADR | UN 2457 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 100.0 ppm; 350.0 mg/m3, STEL: 510.0 ppm; 1800.0 mg/m3 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | EJ9350000 | |||||||||
| Autoignition Temperature | 788 °F | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29011000 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Aquatic Chronic 2 Asp. Tox. 1 Flam. Liq. 2 Skin Irrit. 2 STOT SE 3 |
|||||||||
| Hazardous Substances Data | 79-29-8(Hazardous Substances Data) | |||||||||
| REACH Registrations | Active | |||||||||
| Limited Quantities | 1.0 L (0.3 gallon) (liquid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) | |||||||||
| NFPA 704 |
|
2,3-Dimethylbutane price More Price(18)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 39760 | 2,3-Dimethylbutane analytical standard | 79-29-8 | 5ml | $81.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | 39760 | 2,3-Dimethylbutane analytical standard | 79-29-8 | 10ml | $118 | 2022-05-15 | Buy |
| TCI Chemical | D0690 | 2,3-Dimethylbutane >98.0%(GC) | 79-29-8 | 5mL | $25 | 2026-04-30 | Buy |
| TCI Chemical | D0690 | 2,3-Dimethylbutane >98.0%(GC) | 79-29-8 | 25mL | $46 | 2026-04-30 | Buy |
| Sigma-Aldrich | D151602 | 2,3-Dimethylbutane 98% | 79-29-8 | 100ml | $108 | 2026-04-30 | Buy |
2,3-Dimethylbutane Chemical Properties,Uses,Production
Description
2,3-Dimethylbutane is a colorless liquid.Molecular weight= 86.20; Boiling point = 58℃; Flashpoint= 229℃; Autoignition temperature= 405℃.Explosive limits: LEL = 1.2%; UEL= 7.0%. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 3, Reactivity 0. Insoluble in water
Chemical Properties
2,3-Dimethylbutane, C6H14, is a flammable liquid with a specific gravity of 0.66164. It is released into the atmosphere from automobile, biomass combustion, and gasoline vapor emissions.
Physical properties
Colorless liquid with a mild gasoline-like odor. An odor threshold concentration of 4.2 ppmv was reported by Nagata and Takeuchi (1990).
Uses
2,3-Dimethylbutane is a branched saturated hydrocarbon for proteomics research. It is used in organic synthesis, catalytic agent, petrochemical additive.
Uses
2,3-Dimethylbutane is used in high octane fuels and in organic synthesis. It is also used as a gas chromatography standard.
Production Methods
2,3-Dimethylbutane is produced from crude oil, natural liquid gases, and petroleum refining processes.
Definition
ChEBI: 2,3-dimethylbutane is an alkane that is butane substituted by a methyl group at positions 2 and 3. It is an alkane and a volatile organic compound. It derives from a hydride of a butane.
Application
2,3-Dimethylbutane serves as a fuel in pyrolysis experiments to measure product concentrations and ethylene mole fractions. During this process, it undergoes H-abstraction reactions and produces propylene (C3H6) with the highest concentration among isomers[1].
General Description
A clear colorless liquid with a petroleum-like odor. Flash point -20°F. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
Saturated aliphatic hydrocarbons, such as 2,3-DIMETHYLBUTANE, 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. 2,3-DIMETHYLBUTANE is incompatible with oxidizing materials. 2,3-DIMETHYLBUTANE is also incompatible with oxygen. .
Health Hazard
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Flammability and Explosibility
Flammable
Safety Profile
Probably an irritant and narcotic in high concentration. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. Keep away from heat and open flame. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
Potential Exposure
2,3-Dimethylbutane is used in highoctane fuel and to make organic chemicals.
First aid
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and i
Source
Comprised 1.6 to 2.6 vol % of total evaporated hydrocarbons from gasoline tank (quoted,
Verschueren, 1983). Schauer et al. (1999) reported 2,3-dimethylbutane in a diesel-powered
medium-duty truck exhaust at an emission rate of 570 μg/km.
California Phase II reformulated gasoline contained 2,3-dimethylbutane at a concentration of
12.9 g/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without
catalytic converters were 2.14 and 298 mg/km, respectively (Schauer et al., 2002).
Environmental Fate
Photolytic. Major products reported from the photooxidation of 2,3-dimethylbutane with
nitrogen oxides are carbon monoxide and acetone. Minor products included formaldehyde,
acetaldehyde and peroxyacyl nitrates (Altshuller, 1983). Synthetic air containing gaseous nitrous
acid and exposed to artificial sunlight (λ = 300–450 nm) photooxidized 2,3-dimethylbutane into
acetone, hexyl nitrate, peroxyacetal nitrate, and a nitro aromatic compound tentatively identified
as a propyl nitrate (Cox et al., 1980).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water vapor. 2,3-
Dimethylbutane will not hydrolyze because it has no hydrolyzable functional group.
storage
Color Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.Prior to working with 2,3-dimethylbutane you should betrained on its proper handling and storage. Before enteringconfined space where this chemical may be present, checkto make sure that an explosive concentration does not exist.2,3-Dimethylbutane must be stored to avoid contact withoxidizers (such as perchlorates, peroxides, permanganates,chlorates, and nitrates), since violent reactions occur.Sources of ignition, such as smoking and open flames, areprohibited where 2,3-dimethylbutane is handled, used, orstored. Metal containers involving the transfer of 5 gallonsor more of 2,3-dimethylbutane should be grounded andbonded. Drums must be equipped with self-closing valves,pressure vacuum bungs, and flame arresters. Use only nonsparking tools and equipment, especially when opening andclosing containers of 2,3-dimethylbutane. Wherever 2,3-dimethylbutane is used, handled, manufactured, or
Shipping
This compound requires a shipping label of“FLAMMABLE LIQUID.” It falls in Hazard Class 3 andPacking Group II.
Purification Methods
Distil it from sodium, pass it through a column of silica gel (activated by heating in nitrogen to 350o before use) to remove unsaturated impurities, and again distil it from sodium. Also distil it azeotropically with MeOH, then wash with water, dry (Na2SO4) it, and redistil it. [Beilstein 1 IV 371.]
Incompatibilities
Forms explosive mixture with air.Violent reaction with oxygen, strong oxidizers.
Toxics Screening Level
The ITSL for 2,3-dimethylbutane = 3,500 μg/m 3 based on 8 hr. averaging.
References
[1] Zhang, Y., Mei, B., Zhang, X., Ma, S., & Li, Y. (2021). Exploring fuel isomeric effects on laminar flame propagation of butylbenzenes at various pressures. Proceedings of the Combustion Institute, 38 2, Pages 2419-2429. https://doi.org/10.1016/j.proci.2020.06.168
2,3-Dimethylbutane Preparation Products And Raw materials
Raw materials
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Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20111 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21533 | 55 |
| Shenzhen Nexconn Pharmatechs Ltd | +86-755-89396905 +86-15013857715 | admin@nexconn.com | China | 10399 | 58 |
| career henan chemical co | +86-0371-86658258 | factory@coreychem.com | China | 29780 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 | sales@tnjchem.com | China | 34526 | 58 |
| Shaanxi Didu New Materials Co. Ltd | +86-86-17392712779 +86-13289823923 | 1090@dideu.com | China | 8651 | 58 |
| Aladdin Scientific | tp@aladdinsci.com | United States | 54746 | 58 | |
| Qingdao RENAS Polymer Material Co., Ltd. | +86-0532-86867058 +86-18562606086 | sales@qdrenas.com | China | 1066 | 58 |
| XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. | +8618950047208 | ellena@amitychem.com | China | 43392 | 58 |
| DAYANG CHEM (HANGZHOU) CO.,LTD | +86-88938639 +86-17705817739 | info@dycnchem.com | China | 53799 | 58 |
View Lastest Price from 2,3-Dimethylbutane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-20 | 2,3-Dimethylbutane
79-29-8
|
$1.00-100.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-07-31 | 2,3-Dimethylbutane
79-29-8
|
20kg | 99% | 20 tons | Qingdao RENAS Polymer Material Co., Ltd. | ||
 |
2026-05-15 | 2,3-DIMETHYLBUTANE
79-29-8
|
$1.10 | 1g | 99.0% Min | 100 Tons | Shaanxi Didu New Materials Co. Ltd |
-
- 2,3-Dimethylbutane
79-29-8
- $1.00-100.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- 2,3-Dimethylbutane
79-29-8
- $0.00
- 99%
- Qingdao RENAS Polymer Material Co., Ltd.
-
- 2,3-DIMETHYLBUTANE
79-29-8
- $1.10
- 99.0% Min
- Shaanxi Didu New Materials Co. Ltd
79-29-8(2,3-Dimethylbutane)Related Search:
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