General Information
Version
4
Revision date
2023-08-25
Product name
3,4-Diethoxy-3-cyclobutene-1,2-dione
Product Synonyms
Diethyl squarate
CAS No.
5231-87-8
Emergency telephone
001-800-227-6701, +32 14 57 52 11, 001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887, +41-44 251 51 51, +41-43 508 20 11
Icons in SDS
Company Information
company name
Thermo Fisher Scientific
e-mail address of the competent person responsible for the Safety Data Sheet
infoch@thermofisher.com, begel.sdsdesk@thermofisher.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H315, H317, H319, H334, H335
Hazard statements
Code
Statements
H315
Causes skin irritation
Section 2
SECTION 2: Hazards identification
Physical hazards
Based on available data, the classification criteria are not met
Health hazards
Skin Corrosion/Irritation Category 2 (H315) Serious Eye Damage/Eye Irritation Category 2 (H319) Respiratory Sensitization Category 1 (H334) Skin Sensitization Category 1 (H317) Specific target organ toxicity - (single exposure) Category 3 (H335)
Environmental hazards
Based on available data, the classification criteria are not met
Hazard statements
see section 16 H315 - Causes skin irritation H334 - May cause allergy or asthma symptoms or breathing difficulties if inhaled H335 - May cause respiratory irritation H317 - May cause an allergic skin reaction H319 - Causes serious eye irritation
Signal word
Danger
Precautionary statements
P261 - Avoid breathing dust/fume/gas/mist/vapors/spray P342 + P311 - If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician P304 + P340 - IF INHALED: Remove person to fresh air and keep comfortable for breathing P280 - Wear protective gloves/protective clothing/eye protection/face protection P302 + P352 - IF ON SKIN: Wash with plenty of soap and water P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
2.3 Other hazards
This product does not contain any known or suspected endocrine disruptors
2.1 Classification of the substance or mixture
2.1. Classification of the substance or mixture CLP Classification - Regulation (EC) No 1272/2008 Physical hazards Based on available data, the classification criteria are not met Health hazards Skin Corrosion/Irritation Category 2 (H315) Serious Eye Damage/Eye Irritation Category 2 (H319) Respiratory Sensitization Category 1 (H334) Skin Sensitization Category 1 (H317) Specific target organ toxicity - (single exposure) Category 3 (H335) Environmental hazards Based on available data, the classification criteria are not met Full text of Hazard Statements: see section 16
