THIOMERSAL

PRODUCT IDENTIFICATION
CAS NO. 54-64-8

THIOMERSAL

EINECS NO. 200-210-4
FORMULA 2(C2H5HgS)C6H4COONa
MOL WT. 404.81

H.S. CODE

 2930.90.70

TOXICITY

 Oral rat LD50: 75 mg/kg
SYNONYMS ((o-Carboxyphenyl)thio)ethylmercury sodium salt;
Ethyl(2-mercaptobenzoato-S)mercury, sodium salt; Sodium ethylmercurithiosalicylate; Thimerosal; Ethyl (sodium o-mercaptobenzoato)mercury; Merthiolate; Merthiolate sodium; Sodium ethylmercuric thiosalicylate; o-(Ethylmercurithio)benzoic acid sodium salt;
DERIVATION

 

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE gray crystalline powder
MELTING POINT 232 - 233 C (decomposes)
BOILING POINT

 

SPECIFIC GRAVITY

 

SOLUBILITY IN WATER 1000 (g/l)

SOLVENT SOLUBILITY

  
pH  
VAPOR DENSITY

 

AUTOIGNITION  

REFRACTIVE INDEX

  
NFPA RATINGS  
FLASH POINT

 

STABILITY Stable under normal conditions.

GENERAL DESCRIPTION & APPLICATIONS
Thiomersal is an organomercurial antifungal and bacteriostatic against nonsporulating bacteria. It is used as a topical anti-infective and as a preservative in pharmaceutical preparations.

Members of mercurial fungicide

Product

CAS RN

Thiomersal

54-64-8

Phenylmercury nitrate

55-68-5

Phenylmercury acetate

62-38-4

Phenylmercury chloride

100-56-1
Chloroethylmercury

107-27-7
Bromoethylmercury

107-26-6
(Acetato-O)ethylmercury

109-62-6
Neanthine 123-88-6

Methylmercury dicyandiamide

502-39-6
N-(Ethylmercuri)-p-toluenesulfonanilide 517-16-8

Tolylmercury acetate

1300-78-3

Ethylmercury phosphate

2235-25-8

Phenylmercuriurea

2279-64-3
Methylmercury benzoate 3626-13-9

(3-Ethoxypropyl)mercury bromide

6012-84-6

Mercuric chloride

7487-94-7

Mercurous chloride

7546-30-7
Hydrargaphen 14235-86-0
Phenyl mercury oxyquinolate 14354-56-4

Mercuric oxide

21908-53-2

Phenylmercury salicylate

28086-13-7
SALES SPECIFICATION

APPEARANCE

 pale yellow powder

IDENTIFICATION

passes test

ASSAY

97.0 - 101.0%

pH

6 - 8 (1% aq. solution)

FREE Hg

0.7% max

SOLVENT RESIDUE

0.5% max
LOSS ON DRYING

0.5% max
TRANSPORTATION
PACKING
 
HAZARD CLASS 6.1 (Packing Group: III)
UN NO. 2025
OTHER INFORMATION
Hazard Symbols: T+ N. Risk Phrases: 26/27/28-33-50/53 , Safety Phrases: 13-28.1-36-45-60-61