NIST2720

Sulfur in di-n-butyl sulfide

NIST^® SRM^® 2720

• Synonym(s): Dibutyl sulfide, 1,1′-Thiobisbutane, Butyl sulfide, NSC 8460
• Linear Formula: CH₃(CH₂)₃S(CH₂)₃CH₃
• CAS Number: 544-40-1
• Molecular Weight: 146.29
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329818739
• MDL number: MFCD00009468
• Beilstein/REAXYS Number: 1732829

Properties

• InChI: 1S/C8H18S/c1-3-5-7-9-8-6-4-2/h3-8H2,1-2H3
• SMILES string: CCCCSCCCC
• InChI key: HTIRHQRTDBPHNZ-UHFFFAOYSA-N
• grade: certified reference material
• vapor density: 5.07 (vs air)
• vapor pressure: 5.17 mmHg ( 37.7 °C)
• packaging: pkg of 5 x 4.5 mL
• manufacturer/tradename: NIST^®
• technique(s): XRF: suitable
• refractive index: n20/D 1.452 (lit.)
• bp: 188-189 °C (lit.)
• mp: −76 °C (lit.)
• density: 0.838 g/mL at 25 °C (lit.)
• application(s): petroleum
• format: matrix material
• Quality Level: 100

Description

Application

The Standard Reference Material (SRM) is primarily intended for use as an internal standard in X-ray fluorescence spectrometry (XRF) for measuring sulfur in oils and other liquid hydrocarbon matrices.

Features and Benefits

• NIST certified value for sulfur content is reported based on analyses by isotope dilution thermal ionization mass spectrometry (ID-TIMS)
• Maintenance and expiration of SRM certificate, instructions for use are provided on the NIST certificate.

General description

One unit of SRM 2720 comprises five amber ampoules, each containing approximately 4.5 mL of di-n-butyl sulfide, sealed in an argon atmosphere. For more information, please refer to the COA and SDS.
SRM 2720_cert

SRM 2720_SDS

Other Notes

Example analytes are listed below as a reference. Please download a current certificate at nist.gov/SRM for current analytes and certified values.
Sulfur (S)

See certificate for values and more details at nist.gov/SRM.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk: WGK 2
• flash_point_f: 141.8 °F
• flash_point_c: 61 °C