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MilliporeSigma

360066

Sigma-Aldrich

2,2,4-Trimethylpentane

anhydrous, 99.8%

Synonym(s):

TMP, 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:
12352001
PubChem Substance ID:
NACRES:
NA.21
Grade:
anhydrous
Assay:
99.8%
Technique(s):
UV/Vis spectroscopy: suitable
Bp:
98-99 °C (lit.)
Vapor pressure:
41 mmHg ( 21 °C)

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grade

anhydrous

Quality Level

vapor density

3.9 (vs air)

vapor pressure

41 mmHg ( 21 °C)

assay

99.8%

form

liquid

autoignition temp.

745 °F

expl. lim.

6 %

technique(s)

UV/Vis spectroscopy: suitable

impurities

<0.003% water
<0.005% water (100 mL pkg)

evapn. residue

<0.0003%

refractive index

n20/D 1.391 (lit.)

bp

98-99 °C (lit.)

mp

−107 °C (lit.)

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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1 of 4

This Item
3605973229134862
grade

anhydrous

grade

ACS reagent

grade

-

grade

-

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

technique(s)

UV/Vis spectroscopy: suitable

technique(s)

-

technique(s)

-

technique(s)

HPLC: suitable

assay

99.8%

assay

≥99.0%

assay

≥99.5% (GC)

assay

≥99%

form

liquid

form

liquid

form

liquid

form

liquid

impurities

<0.003% water, <0.005% water (100 mL pkg)

impurities

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

impurities

≤0.0005% free acid (as CH3COOH), ≤0.001% non-volatile matter, ≤0.005% S-compounds (as S), ≤0.01% water (Karl Fischer)

impurities

≤0.0005% non-volatile matter, ≤0.001% free acid (as CH3COOH), ≤0.01% water (Karl Fischer)

General description

2,2,4-Trimethylpentane is a primary reference fuel with an arbitrary octane number of 100 as it burns smoothly without resulting in any knocking.[1] It is mainly used to improve the octane rating of combustion fuels.[2][3]

Application

2,2,4-Trimethylpentane has been used for the calibration of densimeter[4] and for baseline correction in UV-Visible spectrophotometer.[5]

Other Notes

The article number 360066-6X1L will be discontinued. Please order the single bottle 360066-1L which is physically identical with the same exact specifications.

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

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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Questions

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  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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