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Home/Compounds/Research Reagent/Tetrabutylammonium hydrogen sulfate
C16H37NO4S
339.5 g/mol
Research ReagentDanger

Tetrabutylammonium hydrogen sulfate

CAS32503-27-8EC251-068-5
Category
Research Reagent
Compound Class
Inorganic Salt
Primary Use
Research Compound

Tetrabutylammonium hydrogen sulfate is a quaternary ammonium salt commonly employed as a phase transfer catalyst. It facilitates the transfer of reactants between immiscible phases in organic synthesis.

Phase transfer catalyst in organic reactionsReagent in laboratory-scale synthesis

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

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Related Compounds

StrongStructure SimilarSimilarity 1.00

Tetrabutylammonium borohydride

CAS33725-74-5

research compound

StrongStructure SimilarSimilarity 1.00

Tetrabutylammonium fluoride trihydrate

CAS87749-50-6

research compound

StrongStructure SimilarSimilarity 1.00

Tetrabutylammonium hexafluorophosphate

CAS3109-63-5

research compound

StrongStructure SimilarSimilarity 1.00

Tetrabutylammonium iodide

CAS311-28-4

research compound

ApplicationSame Use

Tetraethylammonium fluoride trihydrate

CAS63123-00-2

research compound

ApplicationSame Use

Tbaf(tbuoh)4

CAS1094520-55-4

research compound

ApplicationSame Use

Benzyltriphenylphosphonium chloride

CAS1100-88-5

research compound

ApplicationSame Use

Butyltriphenylphosphonium chloride

CAS13371-17-0

research compound

Safety Reference

Corrosive
Corrosive
Harmful
Harmful
Environmental Hazard
Environmental Hazard
Danger
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects

Customs Tariff Classification

The international HS code for Tetrabutylammonium hydrogen sulfate (CAS 32503-27-8) is 2923.90.

HS code (international, 6-digit)

2923.90

EU CN code (8-digit)

2923 90 00

Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.

Identifiers
IUPAC Name

hydrogen sulfate;tetrabutylazanium

InChIKey

SHFJWMWCIHQNCP-UHFFFAOYSA-M

SMILES

CCCC[N+](CCCC)(CCCC)CCCC.OS(=O)(=O)[O-]

Synonyms (32)
  • TBAHS
  • (Bu)4NHSO4
  • IPC-TBA-HS
  • Tetrabutylammonium bisulfate
  • n-Bu4NHSO4
  • tetrabutyl-ammonium sulfate
  • tetrabutylammonium bisulphate

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