Note: Ingredients listed on restricted chemical lists
General Information
Revision date
2026-03-06
Product name
Cobalt hydroxide
CAS No.
21041-93-0
supplier name
Combi-Blocks, Inc.
Emergency telephone
1-858-635-8950, 1-800-535-5053, 1-352-323-3500
Icons in SDS
Company Information
company name
Combi-Blocks, Inc.
e-mail address of the competent person responsible for the Safety Data Sheet
sales@combi-blocks.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H302+H332, H317, H319, H334, H351, H410
Hazard statements
Code
Statements
H302+H332
Harmful if swallowed or if inhaled
Section 2
Signal word
Danger
Hazard statements
H302+H332 Harmful if swallowed or if inhaled. H317 May cause an allergic skin reaction H319 Causes serious eye irritation H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H351 Suspected of causing cancer H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P281 Use personal protective equipment as required. P285 In case of inadequate ventilation wear respiratory protection. P301+P312+P330 If swallowed: Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. P302+P352 If on skin: Wash with soap and water. P304+P340+P312 If inhaled: Remove victim to fresh air and keep at rest in a position comfortable for breath- ing. Call a POISON CENTER or doctor/physician 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. P308+P313 IF exposed or concerned: Get medical advice/attention. P333+P313 If skin irritation or a rash occurs: Get medical advice/attention. P337+P313 If eye irritation persists: get medical advice/attention. P342+P311 If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. P363 Wash contaminated clothing before reuse. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container to an approved waste disposal plant.
2.1 Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS) Acute toxicity,oral (Category 4), H302 Acute toxicity,inhalation (Category 4), H332 Sensitisation, Skin (Category 1), H317 Serious eye damage/eye irritation (Category 2), H319 Sensitisation, respiratory (Category 1), H334 Carcinogenicit (Category 2), H351 Hazardous to the aquatic environment, long-term hazard (Category 1), H410