3M Aerospace Sealant AC-251 Black B-2 Catalyst

3M United Kingdom PLC

Revision date : 2026-09-02

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GHS07 GHS08 GHS09
Health risk rating 4
Safety risk rating 1
Environmental risk rating 5

Note: Ingredients listed on restricted chemical lists

EC/CAS

215-202-6/1313-13-9

Name of the chemical

Manganese dioxide

Concentration

30-50

Listed in

EC/CAS

262-967-7/61788-32-7

Name of the chemical

Terphenyl, hydrogenated

Concentration

30-45

EC/CAS

231-791-2/7732-18-5

Name of the chemical

Water, distilled, conductivity or of similar purity H2O

Concentration

0.1-3

EC/CAS

215-185-5/1310-73-2

Name of the chemical

sodium hydroxide

Concentration

<2

EC/CAS

500-209-1/68412-54-4

Name of the chemical

Nonylphenolethoxylates (NPEO)

Concentration

<0.02

General Information

Version

13.01

Revision date

2026-09-02

Product name

3M Aerospace Sealant AC-251 Black B-2 Catalyst

1.2.1 Relevant identified uses

Hardener

Emergency telephone

+44 (0)1344 858 000

Icons in SDS

GHS07 GHS08 GHS09 M004 M009 M010 M011 M013 M017

Company Information

company name

3M United Kingdom PLC

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

ner-productstewardship@mmm.com

GHS Information

Signal word

WARNING

Hazard Codes

Hazard statements (CLP)

H302, H315, H319, H373, H400, H410

Hazard statements

Code

Statements

H302

Harmful if swallowed

Section 2

SECTION 2: Hazards identification

No 1272/2008 Classification of the substance or mixture

Signal word

WARNING.

Hazard pictograms

GHS07 (Exclamation mark) |GHS08 (Health Hazard) |GHS09 (Environment) | Ingredient Identifier(s) EC No. % by Wt manganese dioxide 1313-13-9 215-202-6 30 - 50

Hazard statements

H302 Harmful if swallowed. H315 Causes skin irritation. H319 Causes serious eye irritation. H373 May cause damage to organs through prolonged or repeated exposure: nervous system. H410 Very toxic to aquatic life with long lasting effects.

Prevention

P260A Do not breathe vapours. P273 Avoid release to the environment. P280 Wear protective gloves and eye protection. P260A Do not breathe vapours. P280 Wear protective gloves and eye protection. 10% of the mixture consists of components of unknown acute oral toxicity.

Response

P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P391 Collect spillage. For containers not exceeding 125 ml the following Hazard and Precautionary statements may be used: <=125 ml Precautionary statements

Contains

49% of components with unknown hazards to the aquatic environment

2.3 Other hazards

Contains a substance identified as an endocrine disrupter in the list established in accordance with REACH Article 59(1), as amended by UK REACH Regulations SI 2019/758 Contains a substance that meets the criteria for vPvB according to

2.1 Classification of the substance or mixture

The retained CLP Regulation (EU) No 1272/2008 as amended for Great Britain The health and environmental classifications of this material have been derived using the calculation method, except in cases where test data are available or the physical form impacts classification. Classification(s) based on test data or physical form are noted below, if applicable. CLASSIFICATION: Acute Toxicity, Category 4 - Acute Tox. 4; H302 Skin Corrosion/Irritation, Category 2 - Skin Irrit. 2; H315 Serious Eye Damage/Eye Irritation, Category 2 - Eye Irrit. 2; H319 Specific Target Organ Toxicity-Repeated Exposure, Category 2 - STOT RE 2; H373 Hazardous to the Aquatic Environment (Acute), Category 1 - Aquatic Acute 1; H400 Hazardous to the Aquatic Environment (Chronic), Category 1 - Aquatic Chronic 1; H410 For full text of H phrases, see Section 16. 2.2. Label elements The retained CLP Regulation (EU) No 1272/2008 as amended for Great Britain SIGNAL WORD WARNING. Symbols GHS07 (Exclamation mark) |GHS08 (Health Hazard) |GHS09 (Environment) | Pictograms Ingredient Identifier(s) EC No. % by Wt manganese dioxide 1313-13-9 215-202-6 30 - 50 HAZARD STATEMENTS: H302 Harmful if swallowed. H315 Causes skin irritation. H319 Causes serious eye irritation. H373 May cause damage to organs through prolonged or repeated exposure: nervous system. H410 Very toxic to aquatic life with long lasting effects. PRECAUTIONARY STATEMENTS Prevention: P260A Do not breathe vapours. P273 Avoid release to the environment. P280 Wear protective gloves and eye protection. Response: P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P391 Collect spillage. For containers not exceeding 125 ml the following Hazard and Precautionary statements may be used: <=125 ml Precautionary statements Prevention: P260A Do not breathe vapours. P280 Wear protective gloves and eye protection. 10% of the mixture consists of components of unknown acute oral toxicity. Contains 49% of components with unknown hazards to the aquatic environment. 2.3. Other hazards Contains a substance identified as an endocrine disrupter in the list established in accordance with REACH Article 59(1), as amended by UK REACH Regulations SI 2019/758 Contains a substance that meets the criteria for vPvB according to Regulation (EC) No 1907/2006, Annex XIII, as amended by UK REACH Regulations SI 2019/758 SECTION 3: Composition/information on ingredients 3.1. Substances Not applicable 3.2. Mixtures Ingredient Identifier(s) % Classification according to Regulation (EC) No. 1272/2008 [CLP], as amended for GB manganese dioxide (CAS-No.) 1313-13-9 30 - 50 Acute Tox. 4, H332 (EC-No.) 215-202-6 Acute Tox. 4, H302 EUH031 STOT RE 2, H373 Hydrogenated terphenyl (CAS-No.) 61788-32-7 30 - 45 Aquatic Chronic 2, H411 (EC-No.) 262-967-7 Zeolites (CAS-No.) 1318-02-1 5 - 10 Substance with a national occupational (EC-No.) 215-283-8 exposure limit Polyphenyls, quater- and higher, partially (CAS-No.) 68956-74-1 1 - 10 Substance not classified as hazardous hydrogenated (EC-No.) 273-316-1 Terphenyl (CAS-No.) 26140-60-3 1 - 5 Aquatic Acute 1, H400,M=10 (EC-No.) 247-477-3 Aquatic Chronic 1, H410,M=10 Water (CAS-No.) 7732-18-5

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