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Molecular Weight of Mustard gas (C4H8Cl2S)

Identification of Mustard gas Chemical Compound

2D chemical structure image of Mustard gas
Chemical Formula C4H8Cl2S
Molecular Weight 159.07672 g/mol
IUPAC Name 1-chloro-2-[(2-chloroethyl)sulfanyl]ethane
SMILES String ClCCSCCCl
InChI InChI=1S/C4H8Cl2S/c5-1-3-7-4-2-6/h1-4H2
InChIKey QKSKPIVNLNLAAV-UHFFFAOYSA-N

Molecular Weight Description

The Mustard gas molecule consists of 8 Hydrogen atom(s), 4 Carbon atom(s), 1 Sulfur atom(s), and 2 Chlorine atom(s) - a total of 15 atom(s). The molecular weight of Mustard gas is determined by the sum of the atomic weights of each constituent element multiplied by the number of atoms, which is calculated to be:

$$ 159.07672 · \frac{g}{mol} $$

The exact term of the above molecular weight is “molar mass”, which is based on the atomic mass of each element. Molecular weight is actually an older term of “relative molar mass” or “molecular mass”, which is a dimensionless quantity equal to the molar mass divided by the molar mass constant defined by 1 g/mol.

Molecular masses are calculated from the standard atomic weights of each nuclide, while molar masses are calculated from the atomic mass of each element. The atomic mass takes into account the isotopic distribution of the element in a given sample.

3D chemical structure image of Mustard gas
Ball-and-stick model of Mustard gas

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Additional Information for Identifying Mustard gas Molecule


  • InChI (IUPAC International Chemical Identifier) information of Mustard gas

    In addition to the molecular weight information, the structural information of Mustard gas in a textual expression is available via InChi. The full standard InChI of Mustard gas is given below:

    InChI=1S/C4H8Cl2S/c5-1-3-7-4-2-6/h1-4H2

    It can provide a way to encode the molecular information of Mustard gas to facilitate the search for the compound information in databases and on the web.

    The condensed, 27 character standard InChIKey (hashed version of the full standard InChI) of Mustard gas is:

    InChIKey=QKSKPIVNLNLAAV-UHFFFAOYSA-N

    It may allow easier web searches for Mustard gas. The InChIKey, however, needs to be linked to the full InChI as well in order to get back to the original structure of the Mustard gas as the full standard InChI cannot be reconstructed from the InChIKey.

  • Other names (synonyms) or registry numbers of Mustard gas

    There may be different names of the Mustard gas compound depending on the various situations of industrial applications, which are given below including the registry numbers if available:

    • 69020-37-7
    • 68157-62-0
    • 39472-40-7
    • 172672-70-7
    • A828174
    • MUSTARD GAS [BIS-2-CHLOROETHYL SULFIDE]
    • 1-Chloro-2-[(2-chloroethyl)sulfanyl]ethane #
    • 1-chloranyl-2-(2-chloroethylsulfanyl)ethane
    • 1-Chloro-2-(.beta.-chloroethylthio)ethane
    • 1-chloro-2-(2-chloroethylsulfanyl)ethane
    • .beta.,.beta.'-Dichloroethyl sulfide
    • .beta.,.beta.-Dichloroethyl sulfide
    • beta, beta'-dichlorodiethyl sulfide
    • .beta.-Chloroethylisobutyl sulfide
    • Ethane,1,1'-thiobis[2-chloro-
    • beta,beta'-dichlorodiethyl sulfide
    • beta, beta'-dichloroethyl sulfide
    • Bis(.beta.-chloroethyl) sulfide
    • HD (chemical warfare agent)
    • Di(2-chloroethyl) sulfide
    • T8KEC9FH9P
    • Kampfstoff ''lost''
    • 2-chloroethylsulphide
    • Ethane, 1,1'-thiobis(2-chloro)-
    • Dichloroethyl sulfide
    • Mustard T- mixture
    • S Lost
    • Yellow Cro ss
    • Yellow Cross
    • Bis(beta-chloroethyl) sulfide
    • KampfstoffLost
    • C4H8Cl2S
    • Psoriazin
    • Mustardgas
    • Bis-(2-chloroethyl) Sulfide
    • 1-chloro-2-[(2-chloroethyl)thio]ethane
    • 1-chloro-2-(2-chloroethylthio)ethane
    • Dichloroethyl sulfide [Forbidden]
    • HD
    • 1-Chloro-2-(beta-chloroethylthio)ethane
    • bis-(2-chloroethyl)sulfide
    • bis(2-chloroethyl)sulfane
    • Ethane, 1,1'-thiobis(2-chloro-
    • BIS(2-CHLOROETHYL)SULFIDE
    • Diethyl sulfide, 2,2'-dichloro
    • beta,beta'-Dichloroethyl sulphide
    • beta,beta-Dichlor-ethyl-sulphide
    • beta,beta'-Dichloroethyl sulfide
    • 2,2'-Dichlorodiethyl sulphide
    • 2,2'-Dichloroethyl sulphide
    • Bis(beta-chloroethyl)sulphide
    • Bis(2-chloroethyl) sulphide
    • Bis(beta-chloroethyl)sulfide
    • Bis(2-chloroethyl)sulphide
    • Ethane, 1,1'-thiobis[2-chloro-
    • Di-2-chloroethyl sulphide
    • Mustard
    • 2,2'-Dichlorodiethyl sulfide
    • Sulfide, bis(2-chloroethyl)
    • 2,2'-Dichloroethyl sulfide
    • Sulphur mustard gas
    • Gelbkreuz [Czech]
    • Agent THD
    • Di-2-chloroethyl sulfide
    • Kampstoff lost
    • Agent hd
    • Dichlorodiethyl sulfide
    • Kampstoff lost
    • Sulphur mustard
    • Psoriasin
    • 1,1'-Thiobis(2-chloroethane)
    • Sulfur mustard gas
    • Mustard HD
    • Yellow cross gas
    • S Mustard
    • 505-60-2
    • S-yperite
    • Mustard vapor
    • Gelbkreuz
    • S-Lost
    • Bis(2-chloroethyl) sulfide
    • Distilled mustard
    • Mustard, sulfur
    • Schwefel-lost
    • Yellow cross liquid
    • Lost
    • Iprit
    • Senfgas
    • Yperite
    • Sulfur mustard
    • Mustard gas

Mustard gas Identification Summary Frequently Asked Questions (FAQs)

What’s the formula of Mustard gas?
C4H8Cl2S
How many atoms and what are the elements in the Mustard gas molecule?
15 atom(s) - 8 Hydrogen atom(s), 4 Carbon atom(s), 1 Sulfur atom(s), and 2 Chlorine atom(s)
How many chemical bonds and what types of bonds are in the Mustard gas structure?
14 bond(s) - 6 non-H bond(s), 2 rotatable bond(s), and 1 sulfide(s)
What’s the molar mass of Mustard gas?
159.07672 g/mol
What’s the SMILES format of Mustard gas?
ClCCSCCCl
What’s the InChI format of Mustard gas?
InChI=1S/C4H8Cl2S/c5-1-3-7-4-2-6/h1-4H2
What’s the InChIKey string of Mustard gas?
QKSKPIVNLNLAAV-UHFFFAOYSA-N

2265 The contents of this page can freely be shared if cited as follows:
Source: Chemical Compounds Deep Data Source (CCDDS; https://www.molinstincts.com) based on 41 patented QSQN and QN technology
commercialized into Mol-Instincts database and ChemRTP, ChemEssen, Inc (2024).

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