Fentin acetate

IUPAC name


Other names

Phentin acetate; Triphenyltin acetate; Triphenylstannyl acetate; Acetic acid tri(phenyl)stannyl ester, Brestan


3D model (JSmol)

ECHA InfoCard 100.011.804
EC Number

PubChem CID


CompTox Dashboard (EPA)

Molar mass 409.07 g/mol
Melting point 122-124 °C
Occupational safety and health (OHS/OSH):

Main hazards

Very toxic

Dangerous for the environment

GHS labelling:

H301, H311, H315, H318, H330, H335, H351, H361d, H372, H410
P201, P202, P260, P264, P270, P271, P273, P280, P284, P301+P310, P302+P352, P304+P340, P305+P351+P338, P308+P313, P310, P320, P330, P332+P313, P361, P363, P391, P403+P233, P405, P501
Lethal dose or concentration (LD, LC):

LD50 (median dose)

21 mg/kg (guinea pig, oral)

30 mg/kg (rabbit, oral)

81 mg/kg (mouse, oral)

125 mg/kg (rat, oral)[2]

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Fentin acetate is an organotin compound with the formula (C6H5)3SnO2CCH3. It is a colourless solid that was previously used as a fungicide.[3][4]


Most carboxylates of triphenyltin adopt polymeric structures with five-coordinate Sn centers.[5]


  1. ^ Fentin acetate at Sigma-Aldrich
  2. ^ “Tin (organic compounds, as Sn)”. Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  3. ^ G. G. Graf “Tin, Tin Alloys, and Tin Compounds” in Ullmann’s Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH.doi:10.1002/14356007.a27_049
  4. ^ Fentin Acetate. PubChem. National Library of Medicine. NIH. Accessed 13 July 2023.
  5. ^ Weng Ng, Seik; Lan Chin, Kwai; Wei, Chen; Kumar Das, V.G.; Butcher, Ray J. (1989). “Variable-temperature tin-119m Mössbauer spectroscopic and x-ray crystallographic study of triphenyltin(IV) chloroacetate, [(C6H5)3SnOC(O)CH2Cl], and a redetermination of d[ln f(T)]/DT for triphenyltin(IV) acetate”. Journal of Organometallic Chemistry. 376 (2–3): 277–281. doi:10.1016/0022-328X(89)85138-1.

External links[edit]

  • Fentin acetate in the Pesticide Properties DataBase (PPDB)

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