Note: Ingredients listed on restricted chemical lists
EC/CAS
54-64-8
Name of the chemical
Sodium o-(ethylmercurithio)benzoate
Concentration
>95
General Information
Version
6
Revision date
2026-07-22
Product name
Thimerosal
Product Synonyms
Merthiolate sodium; Thimerosal
CAS No.
54-64-8
supplier name
Avocado Research Chemicals Ltd
Emergency telephone
001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Avocado Research Chemicals Ltd
e-mail address of the competent person responsible for the Safety Data Sheet
begel.sdsdesk@thermofisher.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H300+H310+H330, H373, H410
Hazard statements
Code
Statements
H300+H310+H330
Fatal if swallowed, in contact with skin or if inhaled
Section 2
SECTION 2: Hazards identification
Physical State
Appearance/Odor
Solid Light cream Odorless Emergency Overview Fatal in contact with skin. Fatal if swallowed. Fatal if inhaled. Very toxic to aquatic life with long lasting effects. May cause damage to organs through prolonged or repeated exposure. Sensitivity to light. Classification of the substance or mixture Acute Oral Toxicity Category 2 Acute Dermal Toxicity Category 1 Acute Inhalation Toxicity - Dusts and Mists Category 2 Specific target organ toxicity - (repeated exposure) Category 2 Acute aquatic toxicity Category 1 Category 3 Chronic aquatic toxicity Category 1 Label Elements
Signal word
Danger Hazard Statements H373 - May cause damage to organs through prolonged or repeated exposure H410 - Very toxic to aquatic life with long lasting effects H300 + H310 + H330 - Fatal if swallowed, in contact with skin or if inhaled
Prevention
P262 - Do not get in eyes, on skin, or on clothing P264 - Wash face, hands and any exposed skin thoroughly after handling P270 - Do not eat, drink or smoke when using this product P271 - Use only outdoors or in a well-ventilated area P280 - Wear protective gloves/protective clothing/eye protection/face protection P284 - Wear respiratory protection
Response
P304 + P340 - IF INHALED: Remove person to fresh air and keep comfortable for breathing P310 - Immediately call a POISON CENTER or doctor P330 - Rinse mouth P302 + P352 - IF ON SKIN: Wash with plenty of soap and water P361 + P364 - Take off immediately all contaminated clothing and wash it before reuse
Storage
P403 + P233 - Store in a well-ventilated place. Keep container tightly closed P405 - Store locked up
Disposal
P501 - Dispose of contents/ container to an approved waste disposal plant
Other physicochemical hazards
None identified.
Health hazards
Fatal in contact with skin. Very toxic if swallowed. Fatal if inhaled. May cause damage to organs through prolonged or repeated exposure.
Environmental hazards
Very toxic to aquatic life with long lasting effects. . Will likely be mobile in the environment due to its water solubility. The product is water soluble, and may spread in water systems. This product does not contain any known or suspected endocrine disruptors.
2.1 Classification of the substance or mixture
Acute Oral Toxicity Category 2 Acute Dermal Toxicity Category 1 Acute Inhalation Toxicity - Dusts and Mists Category 2 Specific target organ toxicity - (repeated exposure) Category 2 Acute aquatic toxicity Category 1 Category 3 Chronic aquatic toxicity