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Mercaptoacetaldehyde

Also known as Acetaldehyde, mercapto-, alpha-mercaptoacetaldehyde, 2-sulfanylacetaldehyde

CAS 4124-63-4Formula C2H4OSMolar mass 76.12 g/molEC 223-929-5
Mercaptoacetaldehyde chemical structure, C2H4OS, CAS 4124-63-4
2D chemical structure

Key facts

What buyers check first

CAS number
4124-63-4
Formula
C2H4OS
Molar mass
76.12 g/mol
EC number
223-929-5
HS code
293090
Category
Aldehydes and ketones

What is Mercaptoacetaldehyde?

Plain description, key identifiers and synonyms

Mercaptoacetaldehyde is a chemical substance with the molecular formula C2H4OS and a molar mass of 76.12 g/mol. Its CAS registry number is 4124-63-4. The IUPAC name is 2-sulfanylacetaldehyde.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-sulfanylacetaldehyde
CAS number
4124-63-4 CAS number cross-checkedOther or deprecated CAS: 43049-68-9
EC number
223-929-5
Molecular formula
C2H4OS
UNII
M7I29I8T38
InChIKey
FLJWVVUJGVNXMZ-UHFFFAOYSA-N
InChI
InChI=1S/C2H4OS/c3-1-2-4/h1,4H,2H2
SMILES (canonical and isomeric)
C(C=O)S

Synonyms

  • Acetaldehyde, mercapto-
  • alpha-mercaptoacetaldehyde
  • 2-sulfanylacetaldehyde
  • 2-mercaptoacetaldehyde
  • Sulfanylacetaldehyde
  • sulfhydryl acetaldehyde
  • beta-mercaptoacetaldehyde

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
76.12 g/molcalc.
Exact mass
75.9983 Dacalc.
LogP (octanol/water)
0.12calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
4calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Mercaptoacetaldehyde suppliers

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Mercaptoacetaldehyde price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Flavouring and nutrient

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Mercaptoacetaldehyde is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Mercaptoacetaldehyde is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Mercaptoacetaldehyde, based on the data on this page

What is Mercaptoacetaldehyde?

Mercaptoacetaldehyde is a chemical substance with the molecular formula C2H4OS and a molar mass of 76.12 g/mol. Its CAS registry number is 4124-63-4. The IUPAC name is 2-sulfanylacetaldehyde.

What is the CAS number of Mercaptoacetaldehyde?

The CAS registry number of Mercaptoacetaldehyde is 4124-63-4. Other or deprecated CAS numbers: 43049-68-9.

What is the molecular formula and weight of Mercaptoacetaldehyde?

The molecular formula of Mercaptoacetaldehyde is C2H4OS and its molar mass is 76.12 g/mol.

What is Mercaptoacetaldehyde used for?

Known uses and roles of Mercaptoacetaldehyde include flavouring and nutrient.

Is Mercaptoacetaldehyde hazardous?

No GHS hazard classification for Mercaptoacetaldehyde is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Mercaptoacetaldehyde?

Mercaptoacetaldehyde is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Mercaptoacetaldehyde?

Post a free request on CompoundList and suppliers of Mercaptoacetaldehyde will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Mercaptoacetaldehyde?

Suppliers quote Mercaptoacetaldehyde on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Mercaptoacetaldehyde

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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