Thimerosal is an organomercury compound used as an antiseptic and antifungal preservative. It is commonly employed as a preservative in ophthalmic and topical pharmaceutical preparations.
ophthalmic preservativetopical anti-infectivefungicide for cotton seed treatment
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.
Safety Reference
Toxic
Harmful
Health Hazard
Environmental Hazard
Danger
H300Fatal if swallowed
H310
Customs Tariff Classification
The international HS code for Thimerosal (CAS 54-64-8) is 2852.10.
HS code (international, 6-digit)
2852.10
EU CN code (8-digit)
2852 10 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
sodium (2-carboxylatophenyl)sulfanyl-ethylmercury
InChIKey
RTKIYNMVFMVABJ-UHFFFAOYSA-L
SMILES
CC[Hg]SC1=CC=CC=C1C(=O)[O-].[Na+]
Synonyms (77)
Thimerosal (JAN/USP)
Thimerosal, European Pharmacopoeia (EP)
Thimerosal, United States Pharmacopeia (USP)
Thimerosal, meets USP testing specifications
Thiomersal (INN)
Thiomersal - EP
Thiomersalum [INN-Latin]
Tiomersal [INN-Spanish]
Aeroaid spray
Elcide 73
Elcide 75
Elicide
Estivin
Mercurothiolate
Mercurothiolatum
Merfamin
Merphol
Merseptyl (VAN)
Merthiolate (TN)
Merthiolate salt
Merthiolate sodium
Mertorgan
Merzonin
Merzonin sodium
Merzonin, sodium salt
Nosemack
Sodium merthiolate
THIOMERSAL [MART.]
Thimerosal, >=95.0% (Hg)
Thimerosal, >=97% (HPLC)
Thimerosal, BioXtra, 97-101%
Thimerosalate
Thimerosalum
Thimerosol
Thimersalate
Thiomerosal
Thiomersal
Thiomersal CRS
Thiomersalat
Thiomersalate
Thiomersalum
Tiomersal
Tiomersale
Vitaseptol
Vitaseptol Loesung
mercurothiolate sodique
thimerosal
Fatal in contact with skin
H330Fatal if inhaled
H301Toxic if swallowed
H360May damage fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
H373May cause damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
