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The preferred IUPAC nomenclature for Dimethyl sulfite aligns with a common alternative spelling, Dimethyl sulphite.
Answer: True
The preferred IUPAC name for the compound is Dimethyl sulfite. Dimethyl sulphite is a widely accepted alternative spelling, often used interchangeably.
Dimethyl sulfite is known by only one alternative name: Sulfurous acid, dimethyl ester.
Answer: False
The source material lists multiple alternative names for Dimethyl sulfite, including 'Dimethyl sulphite' and 'Sulfurous acid, dimethyl ester', among others.
The CAS Registry Number for Dimethyl sulfite is 616-42-2.
Answer: True
The Chemical Abstracts Service (CAS) Registry Number assigned to Dimethyl sulfite is indeed 616-42-2.
The ChEBI identifier for Dimethyl sulfite is CHEBI:48858.
Answer: True
The Chemical Entities of Biological Interest (ChEBI) registry assigns the identifier CHEBI:48858 to Dimethyl sulfite.
Dimethyl sulfite has a ChemSpider identifier of 69223.
Answer: False
The ChemSpider identifier for Dimethyl sulfite is listed as 62436, not 69223. The latter is its PubChem Compound ID (CID).
The ECHA InfoCard number for Dimethyl sulfite is 100.009.529.
Answer: True
The European Chemicals Agency (ECHA) InfoCard number assigned to Dimethyl sulfite is 100.009.529.
Dimethyl sulfite is assigned the European Community (EC) number 210-481-0.
Answer: True
The European Community (EC) number for Dimethyl sulfite is indeed 210-481-0.
The PubChem Compound ID (CID) for Dimethyl sulfite is 62436.
Answer: False
The PubChem Compound ID (CID) for Dimethyl sulfite is 69223. The number 62436 corresponds to its ChemSpider identifier.
The UNII identifier for Dimethyl sulfite is 9JFA40S66P.
Answer: True
The Unique Ingredient Identifier (UNII) assigned to Dimethyl sulfite is 9JFA40S66P.
The CompTox Chemicals Dashboard (EPA) identifier for Dimethyl sulfite is DTXSID3060665.
Answer: True
The identifier assigned to Dimethyl sulfite within the U.S. Environmental Protection Agency's (EPA) CompTox Chemicals Dashboard is DTXSID3060665.
The chemical formula for Dimethyl sulfite is C2H6O3S.
Answer: True
The molecular formula for Dimethyl sulfite is accurately represented as C2H6O3S.
Dimethyl sulfite is classified as a sulfate ester.
Answer: False
Dimethyl sulfite is classified as a sulfite ester, not a sulfate ester. Sulfite esters are derived from sulfurous acid, while sulfate esters are derived from sulfuric acid.
Dimethyl sulfite's chemical formula C2H6O3S indicates it contains sulfur, oxygen, and carbon atoms.
Answer: True
The chemical formula C2H6O3S explicitly denotes the presence of carbon (C), hydrogen (H), oxygen (O), and sulfur (S) atoms within the Dimethyl sulfite molecule.
Which of the following is NOT listed as an alternative name for Dimethyl sulfite in the source?
Answer: Methyl sulfite ester
The source explicitly lists 'Dimethyl sulphite', 'Sulfurous acid, dimethyl ester', and 'DMSO3' as alternative names for Dimethyl sulfite. 'Methyl sulfite ester' is not mentioned in this context.
What is the CAS Registry Number associated with Dimethyl sulfite?
Answer: 616-42-2
The Chemical Abstracts Service (CAS) Registry Number assigned to Dimethyl sulfite is 616-42-2.
Which identifier is used by the European Chemicals Agency (ECHA) for Dimethyl sulfite?
Answer: ECHA InfoCard number
The European Chemicals Agency (ECHA) utilizes the ECHA InfoCard number, which for Dimethyl sulfite is 100.009.529.
What is the European Community (EC) number for Dimethyl sulfite?
Answer: 210-481-0
The European Community (EC) number assigned to Dimethyl sulfite is 210-481-0.
Identify the correct PubChem Compound ID (CID) for Dimethyl sulfite from the options below.
Answer: 69223
The PubChem Compound ID (CID) for Dimethyl sulfite is 69223.
What is the chemical formula of Dimethyl sulfite?
Answer: C2H6O3S
The chemical formula for Dimethyl sulfite, as indicated in the source material, is C2H6O3S.
Dimethyl sulfite is classified chemically as a type of:
Answer: Sulfite ester
Dimethyl sulfite is chemically classified as a sulfite ester, characterized by the general formula R-O-S(=O)-O-R'.
Dimethyl sulfite has a molar mass of approximately 126.13 g/mol.
Answer: False
The molar mass of Dimethyl sulfite is cited as 110.13 g/mol, not 126.13 g/mol.
Dimethyl sulfite is typically found in a solid state at standard conditions.
Answer: False
At standard conditions (typically 25 °C and 100 kPa), Dimethyl sulfite exists as a clear liquid, not a solid.
The density of Dimethyl sulfite is less than that of water, approximately 0.7 g/cm³.
Answer: False
The density of Dimethyl sulfite is reported as 1.29 g/cm³, which is greater than the density of water (approximately 1.00 g/cm³), not less.
Dimethyl sulfite boils at 126 Kelvin.
Answer: False
Dimethyl sulfite boils at 126 degrees Celsius (°C), not 126 Kelvin (K). 126 K is equivalent to -147.15 °C.
Properties of Dimethyl sulfite are usually reported under standard conditions of 25 °C and 100 kPa.
Answer: True
The source confirms that the typical reporting conditions for properties of Dimethyl sulfite are standard temperature and pressure (STP), defined as 25 °C and 100 kPa.
The boiling point of Dimethyl sulfite (126 °C) is numerically greater than its density (1.29 g/cm³).
Answer: True
The statement compares the boiling point of Dimethyl sulfite (126 °C) with its density (1.29 g/cm³). Numerically, 126 is greater than 1.29. However, it is important to note that comparing a temperature value directly to a density value is not a standard physical comparison.
Based on the source, what is the molar mass of Dimethyl sulfite?
Answer: 110.13 g/mol
The source material indicates that the molar mass of Dimethyl sulfite is 110.13 g/mol.
What is the physical state and appearance of Dimethyl sulfite at standard conditions?
Answer: A clear liquid
At standard conditions (typically 25 °C and 100 kPa), Dimethyl sulfite is described as a clear liquid.
What is the density of Dimethyl sulfite as reported in the source?
Answer: 1.29 g/cm³
The density of Dimethyl sulfite is reported in the source material as 1.29 g/cm³.
At what temperature does Dimethyl sulfite boil under standard pressure?
Answer: 126 °C
Dimethyl sulfite boils at 126 °C under standard pressure.
An interactive 3D model of Dimethyl sulfite can be viewed using resources from PubChem.
Answer: False
While PubChem is a valuable resource, the source indicates that interactive 3D models of Dimethyl sulfite are accessible via links provided by chemapps.stolaf.edu, not directly stated as being from PubChem.
The InChI string 'InChI=1S/C2H6O3S/c1-4-6(3)5-2/h1-2H3' is the complete identifier for Dimethyl sulfite.
Answer: False
The provided string represents the InChI structure layer, but a complete identifier typically includes the InChI key. The source provides the key as BDUPRNVPXOHWIL-UHFFFAOYSA-N for the standard InChI.
Both COS(=O)OC and O=S(OC)OC are valid SMILES notations for Dimethyl sulfite.
Answer: True
The source material confirms that both COS(=O)OC and O=S(OC)OC are recognized Simplified Molecular Input Line Entry System (SMILES) notations for Dimethyl sulfite.
The Dimethyl sulfite molecule is rigid and cannot change its spatial arrangement.
Answer: False
The Dimethyl sulfite molecule is not rigid; it can adopt various spatial arrangements, which are known as conformations.
The 'GG' conformer is identified as the least stable spatial arrangement for Dimethyl sulfite.
Answer: False
The source material explicitly identifies the 'GG' conformer as the *most* stable spatial arrangement for Dimethyl sulfite, not the least stable.
In the most stable GG conformation, the C-O bonds are oriented anti to the S=O bond.
Answer: False
In the most stable GG conformation, the carbon-oxygen (C-O) bonds are oriented in a gauche relationship to the sulfur-double bond oxygen (S=O) bond, not an anti orientation.
The 2D structural formula image provided shows the least stable conformation of dimethyl sulfite.
Answer: False
The provided 2D structural formula image depicts the 'GG' conformation of dimethyl sulfite, which is identified as the most stable arrangement, not the least stable.
The InChI key BDUPRNVPXOHWIL-UHFFFAOYAF corresponds to the older version of the InChI string for Dimethyl sulfite.
Answer: True
The source material indicates that the InChI key BDUPRNVPXOHWIL-UHFFFAOYAF is associated with an older version of the InChI string for Dimethyl sulfite, while BDUPRNVPXOHWIL-UHFFFAOYSA-N corresponds to the standard InChI string.
According to the provided text, where can one access an interactive 3D model of Dimethyl sulfite?
Answer: Through links provided by chemapps.stolaf.edu
The source indicates that interactive 3D models of Dimethyl sulfite are accessible via links provided by chemapps.stolaf.edu.
The InChI string for Dimethyl sulfite includes a key. Which of the following is the key for the standard InChI string?
Answer: BDUPRNVPXOHWIL-UHFFFAOYSA-N
The standard InChI string for Dimethyl sulfite is accompanied by the InChI key BDUPRNVPXOHWIL-UHFFFAOYSA-N.
Which of the following represents one of the SMILES notations for Dimethyl sulfite?
Answer: COS(=O)OC
The source provides two valid SMILES notations for Dimethyl sulfite: COS(=O)OC and O=S(OC)OC. Option B matches one of these.
The ability of the Dimethyl sulfite molecule to adopt different spatial arrangements is referred to as:
Answer: Conformations
The capacity of the Dimethyl sulfite molecule to exist in various spatial arrangements is termed 'conformations'.
Which specific conformation of Dimethyl sulfite is identified as the most stable?
Answer: The GG conformer
The 'GG' conformer is identified in the source material as the most stable spatial arrangement for the Dimethyl sulfite molecule.
In the most stable GG conformation, how are the C-O bonds oriented relative to the S=O bond?
Answer: They are oriented gauche.
In the most stable GG conformation of Dimethyl sulfite, the carbon-oxygen (C-O) bonds are oriented in a gauche relationship to the sulfur-double bond oxygen (S=O) bond.
Methanol and sulfur dioxide are the primary reactants used to prepare Dimethyl sulfite.
Answer: False
The primary reactants utilized in the preparation of Dimethyl sulfite, as stated in the source, are thionyl chloride and methanol, not methanol and sulfur dioxide.
The preparation of Dimethyl sulfite requires a 1:2 molar ratio of thionyl chloride to methanol.
Answer: True
The synthesis of Dimethyl sulfite proceeds with a stoichiometric ratio of one mole of thionyl chloride reacting with two moles of methanol.
Tertiary amine bases can catalyze the reaction forming Dimethyl sulfite.
Answer: True
Tertiary amine bases are noted as potential catalysts that can facilitate the reaction forming Dimethyl sulfite.
A stable chlorosulfinate intermediate, MeOS(O)Cl, is formed and isolated during the preparation of Dimethyl sulfite.
Answer: False
While a chlorosulfinate intermediate (MeOS(O)Cl) is likely formed, the source implies it is transient and not typically isolated, reacting further rather than decomposing.
The reaction equation shows that 2 moles of HCl are produced for every mole of Dimethyl sulfite formed.
Answer: True
The balanced chemical equation for the synthesis of Dimethyl sulfite from thionyl chloride and methanol is SOCl₂ + 2 CH₃OH → (CH₃O)₂SO + 2 HCl. This equation clearly shows the production of two moles of hydrogen chloride (HCl) for each mole of Dimethyl sulfite formed.
The reaction to prepare Dimethyl sulfite involves the elimination of hydrogen chloride gas.
Answer: True
The synthesis reaction, SOCl₂ + 2 CH₃OH → (CH₃O)₂SO + 2 HCl, explicitly shows the production and elimination of hydrogen chloride gas (HCl) as a byproduct.
What are the main reactants used in the synthesis of Dimethyl sulfite?
Answer: Thionyl chloride and methanol
The synthesis of Dimethyl sulfite is achieved using thionyl chloride and methanol as the principal reactants.
What is the stoichiometric ratio of methanol to thionyl chloride required for the preparation of Dimethyl sulfite?
Answer: 2:1
The preparation of Dimethyl sulfite requires a molar ratio of 2 moles of methanol for every 1 mole of thionyl chloride, as indicated by the reaction stoichiometry.
The chemical equation for the preparation of Dimethyl sulfite shows the production of which byproduct?
Answer: Hydrogen chloride (HCl)
The balanced chemical equation for the synthesis of Dimethyl sulfite indicates that hydrogen chloride (HCl) is produced as a byproduct.
One of the primary uses of Dimethyl sulfite is as an additive to prevent oxidation in certain polymers.
Answer: True
The source material identifies the use of Dimethyl sulfite as an additive to inhibit oxidation in specific polymer applications.
Dimethyl sulfite is considered a poor solvent for high-energy battery electrolytes.
Answer: False
The source suggests that Dimethyl sulfite is considered a potentially valuable solvent for high-energy battery electrolytes, not a poor one.
Methyl methanesulfonate is mentioned as a chemical isomer of Dimethyl sulfite.
Answer: True
The 'See also' section explicitly identifies Methyl methanesulfonate as a chemical isomer of Dimethyl sulfite.
Diethyl sulfite is structurally dissimilar to Dimethyl sulfite according to the 'See also' section.
Answer: False
The 'See also' section lists Diethyl sulfite as a related compound. While it differs in its ethyl groups compared to Dimethyl sulfite's methyl groups, the source does not explicitly state they are 'structurally dissimilar'; rather, it lists it as another example within the class of sulfite esters.
Dimethyl sulfoxide and Dimethyl sulfate are listed separately from Dimethyl sulfite in the 'See also' section.
Answer: True
The 'See also' section lists Dimethyl sulfoxide and Dimethyl sulfate as distinct entries alongside Dimethyl sulfite, highlighting related chemical entities.
Dimethyl sulfite is primarily used in the synthesis of inorganic salts.
Answer: False
The primary applications mentioned for Dimethyl sulfite relate to its use as a polymer additive and a potential solvent for battery electrolytes, not in the synthesis of inorganic salts.
Dimethyl sulfite is structurally similar to Dimethyl sulfoxide (DMSO).
Answer: True
While differing in the oxidation state of sulfur and the presence of a double bond to oxygen, Dimethyl sulfite and Dimethyl sulfoxide (DMSO) share structural similarities as organic sulfur compounds with methyl groups attached.
Which of the following is a primary application of Dimethyl sulfite mentioned in the text?
Answer: As an additive to inhibit oxidation in polymers
A primary application noted for Dimethyl sulfite is its use as an additive to inhibit oxidation in certain polymers.
What potential application is noted for Dimethyl sulfite in the field of energy storage?
Answer: As a solvent for high-energy battery electrolytes
In the context of energy storage, Dimethyl sulfite is considered for its potential as a solvent for high-energy battery electrolytes.
Which compound is listed in the 'See also' section as a chemical isomer of Dimethyl sulfite?
Answer: Methyl methanesulfonate
The 'See also' section explicitly identifies Methyl methanesulfonate as a chemical isomer of Dimethyl sulfite.
A 2005 study by Borba et al. focused on the spectroscopic analysis of Dimethyl sulfite.
Answer: True
The source references a 2005 study by Borba et al. published in *The Journal of Physical Chemistry A*, which investigated Dimethyl Sulfite using matrix isolation FTIR spectroscopy and theoretical calculations.
Guenther et al. (1997) studied the use of Dimethyl sulfite as a primary antioxidant.
Answer: False
The 1997 study by Guenther et al. investigated organic sulfites as *secondary* antioxidants, not primary ones.
A 1968 paper explored Dimethyl sulfite's potential as a nonaqueous solvent for batteries.
Answer: True
A paper published in 1968 investigated the behavior of Dimethyl sulfite as a potential solvent for nonaqueous battery applications.
The 1931 paper by Voss and Blanke focused on the synthesis of Dimethyl sulfate.
Answer: False
The 1931 paper by Voss and Blanke, published in *Justus Liebigs Annalen der Chemie*, discusses esters of sulfurous acid, not specifically the synthesis of Dimethyl sulfate.
A review article on 'Organic Sulfites' by H. F. van Woerden was published in 1963.
Answer: True
The source references a review article titled 'Organic Sulfites' authored by H. F. van Woerden, which was published in *Chemical Reviews* in 1963.
Additional chemical data for Dimethyl sulfite can be found on the NIST WebBook.
Answer: True
According to the source material, additional chemical data for Dimethyl sulfite is available on the NIST WebBook.
The 1997 study by Guenther et al. focused on the role of organic sulfites as:
Answer: Secondary antioxidants
The 1997 study by Guenther et al., published in 'Polymer Degradation and Stability,' examined organic sulfites as secondary antioxidants.
A 1968 paper investigated Dimethyl sulfite's use as a solvent in what type of application?
Answer: Nonaqueous batteries
A paper published in 1968 explored the potential utility of Dimethyl sulfite as a solvent within nonaqueous battery applications.
Which journal published the 1963 review article on 'Organic Sulfites' by H. F. van Woerden?
Answer: Chemical Reviews
The 1963 review article on 'Organic Sulfites' by H. F. van Woerden was published in the journal *Chemical Reviews*.
Where can one find additional chemical data for Dimethyl sulfite, according to the source?
Answer: The NIST WebBook
According to the source material, additional chemical data for Dimethyl sulfite is available on the NIST WebBook.