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MilliporeSigma

360597

Sigma-Aldrich

2,2,4-Trimethylpentane

ACS reagent, ≥99.0%

Synonym(s):

Isooctane

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About This Item

Linear Formula:
(CH3)2CHCH2C(CH3)3
CAS Number:
Molecular Weight:
114.23
Beilstein/REAXYS Number:
1696876
EC Number:
MDL number:
UNSPSC Code:
12191502
PubChem Substance ID:
NACRES:
NA.21
Grade:
ACS reagent
Assay:
≥99.0%
Bp:
98-99 °C (lit.)
Vapor pressure:
41 mmHg ( 21 °C)

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grade

ACS reagent

Quality Level

vapor density

3.9 (vs air)

vapor pressure

41 mmHg ( 21 °C)

assay

≥99.0%

form

liquid

autoignition temp.

745 °F

expl. lim.

6 %

dilution

(for analytical testing)

impurities

≤0.0003 meq/g Water-soluble titr. acid
≤0.005% S compounds

evapn. residue

≤0.001%

color

APHA: ≤10

refractive index

n20/D 1.391 (lit.)

bp

98-99 °C (lit.)

mp

−107 °C (lit.)

solubility

water: insoluble

density

0.692 g/mL at 25 °C (lit.)

SMILES string

CC(C)CC(C)(C)C

InChI

1S/C8H18/c1-7(2)6-8(3,4)5/h7H,6H2,1-5H3

InChI key

NHTMVDHEPJAVLT-UHFFFAOYSA-N

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This Item
3600663486259030
grade

ACS reagent

grade

anhydrous

grade

-

grade

analytical standard

assay

≥99.0%

assay

99.8%

assay

≥99%

assay

≥99.7% (GC)

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

100

solubility

water: insoluble

solubility

-

solubility

-

solubility

-

form

liquid

form

liquid

form

liquid

form

-

autoignition temp.

745 °F

autoignition temp.

745 °F

autoignition temp.

745 °F

autoignition temp.

745 °F

General description

2,2,4-Trimethylpentane (TMP, isooctane), a volatile organic solvent[1] is used to improve the octane rating of combustion fuels.[2] TMP is a primary reference fuel with an arbitrary octane number of 100 as it burns smoothly without resulting in any knocking.[3] It also a component of gasoline.[1] The physical characteristics of the binary mixtures of n-heptane and 2,2,4-trimethylpentane has been studied that helps in understanding the combustion process of mixtures of primary reference fuels.[4]
Our premium ACS solvents are ideal for routine chemical synthesis, drying, purification, and critical labware cleaning. They meet or exceed the rigorous standards of the American Chemical Society (ACS), ensuring high-quality results for your research needs.

Premium ACS Solvents: Our solvents meet or exceed the stringent standards set by the American Chemical Society, ensuring high quality and reliability for your laboratory applications.

Replicable and Publishable Results: Designed for consistency, our solvents deliver results that can be reliably reproduced, making them ideal for research that requires publication.

Versatile Applications: Suitable for routine chemical synthesis, drying, purification, and critical labware cleaning, our solvents cater to a wide range of research needs in the laboratory.

Application

2,2,4-Trimethylpentane (TMP, isooctane) may be used in the following studies:
  • Synthesis of polyethyleneimine /silica hybrid nanoparticles.[5]
  • Amino acid quantification process.[6]
  • To dissolve di(2-ethylhexyl) phosphoric acid(DEHPA) to form a solution that is used in the extraction and back extraction of methylene blue.[7]

signalword

Danger

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Central nervous system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

10.4 °F - closed cup

flash_point_c

-12 °C - closed cup


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Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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