Pyrocatechol

Merck Life Science UK Limited

Revision date : 2026-07-10

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

Note: Ingredients listed on restricted chemical lists

EC/CAS

204-427-5/120-80-9

Name of the chemical

1,2-Dihydroxybenzol (2018/1480)

Concentration

<= 100 %

General Information

Version

6.16

Revision date

2026-07-10

Product name

Pyrocatechol

CAS No.

120-80-9

REACH No

01-2119515921-43-XXXX

Emergency telephone

+44 (0)870 8200418

Icons in SDS

GHS06 GHS08 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)

H301, H301+H311, H311, H315, H317, H318, H341, H350

Hazard statements

Code

Statements

H301

Toxic if swallowed

Section 2

SECTION 2: Hazards identification

Labelling according Regulation (EC) No 1272/2008 as amended by GB-CLP Classification of the substance or mixture

Signal word

Danger Danger

Hazard statements

H301 + H311 Toxic if swallowed or in contact with skin. H315 Causes skin irritation. H317 May cause an allergic skin reaction. H318 Causes serious eye damage. H341 Suspected of causing genetic defects. H350 May cause cancer. H317 May cause an allergic skin reaction. H341 Suspected of causing genetic defects. H350 May cause cancer. H318 Causes serious eye damage. H301 + H311 Toxic if swallowed or in contact with skin.

Precautionary statements

P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust. P280 Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER/ doctor. P302 + P352 + P312 IF ON SKIN: Wash with plenty of water. Call a POISON CENTER/ doctor if you feel unwell. P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust. P280 Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER/ doctor. P302 + P352 + P312 IF ON SKIN: Wash with plenty of water. Call a POISON CENTER/ doctor if you feel unwell. P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Supplemental label elements

none Restricted to professional users. Reduced Labelling (<= 125 ml) none

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. Rapidly absorbed through skin.

2.1 Classification of the substance or mixture

Classification according to Regulation (EC) No 1272/2008 as amended by GB-CLP Regulation, UK SI 2019/720, and UK SI 2020/1567 Acute toxicity, (Category 3) H301: Toxic if swallowed. Acute toxicity, (Category 3) H311: Toxic in contact with skin. Skin irritation, (Category 2) H315: Causes skin irritation. Serious eye damage, (Category H318: Causes serious eye damage. 1) Skin sensitisation, (Category 1) H317: May cause an allergic skin reaction. Germ cell mutagenicity, H341: Suspected of causing genetic (Category 2) defects. Carcinogenicity, (Category 1B) H350: May cause cancer.

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