Description

Thimerosal is an organomercury compound widely recognized for its potent antimicrobial and antifungal properties. This compound is valued for its effectiveness as a preservative in preventing microbial contamination in sensitive formulations. It is primarily utilized in the pharmaceutical, vaccine, and biological reagent industries, where maintaining sterility is critical. Our high-purity Thimerosal CAS NO 54-64-8 ensures reliable performance and consistent quality for demanding applications.

Application

• Pharmaceutical Preservative: Used as a bacteriostatic and fungistatic agent in multi-dose vials of vaccines, injectables, ophthalmic solutions, and nasal sprays.
• Biological & Diagnostic Reagents: Acts as a preservative in antigen and antibody solutions, tissue culture media, and various clinical diagnostic kits to ensure long-term stability.
• Cosmetic & Personal Care Products: Employed in trace amounts to preserve the integrity of certain eye makeup removers, mascaras, and contact lens solutions (subject to regional regulations).
• Tattoo Inks & Body Art Products: Serves as a preservative to prevent microbial growth in pigment suspensions.
• Laboratory Research: Used in biochemical and microbiological studies as a reference standard or a specific inhibitor of sulfhydryl groups.
• Historical Medical & Veterinary Applications: Previously used in antiseptic tinctures and as a preservative in some immunoglobulin preparations.

Basic Information

Product Name	Thimerosal
CAS No.	54-64-8
Molecular Formula	C9H9HgNaO2S
Molecular Weight	404.81 g/mol
Synonyms	Thiomersal; Merthiolate; Sodium ethylmercurithiosalicylate; [(o-Carboxyphenyl)thio]ethylmercury sodium salt; Mercurothiolate; Merfamin; Mertorgan; Merzonin
EINECS	200-210-4

Quality Control

Our Thimerosal is manufactured under strict quality management systems. Each batch is subjected to comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets high-purity standards suitable for pharmaceutical and research applications. A Certificate of Analysis (COA) detailing specific results for purity, heavy metals, and related substances is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents and strong acids. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to slightly yellow crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 1.0 %
Mercury Content	47.0 - 50.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Freely soluble in water; soluble in alcohol

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.