Thimerosal

Merck Life Science UK Limited

Revision date : 2025-12-29

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GHS06 GHS08 GHS09
Health risk rating 5
Safety risk rating 1
Environmental risk rating 5

Note: Ingredients listed on restricted chemical lists

EC/CAS

200-210-4/54-64-8

Name of the chemical

Sodium o-(ethylmercurithio)benzoate

Concentration

>=90-<=100

General Information

Version

6.11

Revision date

2025-12-29

Product name

Thimerosal

CAS No.

54-64-8

REACH No

A

1.2.1 Relevant identified uses

For analytical reference material or R&D use only excluding preservative intent

Emergency telephone

+44 (0)870 8200418

Icons in SDS

GHS06 GHS08 GHS09 M004 M009 M017

Company Information

company name

Merck Life Science UK Limited

e-mail address of the competent person responsible for the Safety Data Sheet

TechnicalService@merckgroup.com

GHS Information

Signal word

Danger

Hazard Codes

Hazard statements (CLP)

H300, H300+H310+H330, H310, H330, H373, H400, H410

Hazard statements

Code

Statements

H300

Fatal if swallowed

Section 2

SECTION 2: Hazards identification

Regulation (EC) No. 1272/2008 Classification of the substance or mixture

Signal word

Danger Danger

Hazard statements

H300 + H310 + H330 Fatal if swallowed, in contact with skin or if inhaled. H373 May cause damage to organs (Kidney) through prolonged or repeated exposure if swallowed. H410 Very toxic to aquatic life with long lasting effects. H300 + H310 + H330 Fatal if swallowed, in contact with skin or if inhaled.

Precautionary statements

P262 Do not get in eyes, on skin, or on clothing. P264 Wash skin thoroughly after handling. P273 Avoid release to the environment. P280 Wear protective gloves/ protective clothing. P262 Do not get in eyes, on skin, or on clothing. P264 Wash skin thoroughly after handling. P280 Wear protective gloves/ protective clothing. P302 + P352 + P310 IF ON SKIN: Wash with plenty of water. Immediately call a POISON CENTER/ doctor. P304 + P340 + P310 IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/ doctor.

Response

P302 + P352 + P310 IF ON SKIN: Wash with plenty of water. Immediately call a POISON CENTER/ doctor. P304 + P340 + P310 IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/ doctor. Reduced Labelling (<= 125 ml)

Supplemental label elements

none

2.3 Other hazards

This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

ECOLOGICAL INFORMATION

The substance/mixture does not contain components considered to have endocrine disrupting properties according to REACH Article 57(f) or Commission Delegated regulation (EU) 2017/2100 or Commission Regulation (EU) 2018/605 at levels of 0.1% or higher.

TOXICOLOGICAL INFORMATION

The substance/mixture does not contain components considered to have endocrine disrupting properties according to REACH Article 57(f) or Commission Delegated regulation (EU) 2017/2100 or Commission Regulation (EU) 2018/605 at levels of 0.1% or higher.

2.1 Classification of the substance or mixture

Classification (REGULATION (EC) No 1272/2008) Acute toxicity, Category 2 H300: Fatal if swallowed. Acute toxicity, Category 2 H330: Fatal if inhaled. Acute toxicity, Category 1 H310: Fatal in contact with skin. Specific target organ toxicity - H373: May cause damage to organs through repeated exposure, Category 2, prolonged or repeated exposure if Kidney swallowed. Short-term (acute) aquatic hazard, H400: Very toxic to aquatic life. Category 1 Long-term (chronic) aquatic hazard, H410: Very toxic to aquatic life with long Category 1 lasting effects.

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