3,4-Dihydro-2H-pyran-2-carbaldehyd

Other Classes -> Other Organic Compounds

Flammable agents - 2nd degree

Acrolein dimer, stabilized appears as a colorless or yellow liquid with a pungent disagreeable odor. May be irritating to the eyes and mucous membranes; long-term exposure may result in adverse health effects. Vapors denser than air. Used to make other chemicals, plastics.

Colorless or yellow liquid with a pungent unpleasant odor; [CAMEO] Clear colorless liquid; [Sigma-Aldrich MSDS]

Danger

H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]

P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P354+P338, P317, P319, P321, P332+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 79 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Chemical: 2H-Pyran-2-carboxaldehyde, 3,4-dihydro-

PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.

2H-Pyran-2-carboxaldehyde, 3,4-dihydro-: HSNO Approval: HSR001240 Approved with controls

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious); polymerization hazard]:

· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious); polymerization hazard]:

· May cause toxic effects if inhaled or absorbed through skin.

A mild skin irritant; Causes respiratory depression and lung changes in inhalation lethal-concentration studies of rats; Causes changes in bladder weight, changes in platelet count, and effects on other proteins in 9-day intermittent inhalation studies of rats; [RTECS] May cause eye and mucous membrane irritation; [CAMEO] May polymerize; An irritant that may cause serious eye injury; Harmful by ingestion, inhalation, and skin absorption; Inhalation of high concentrations may cause weakness, dizziness, and unconsciousness; [Sigma-Aldrich MSDS] Acrolein dimer, stabilized (UN2607) has warning of explosive polymerization; [ERG 2016]

Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation.

Acrolein dimer, stabilized

UN2607

Class 3 Flammable and combustible liquid (49 eCFR § 173.120)

PG III: the degree of danger presented by the material is minor

Flam. Liq. 3 (100%)

Flammable agents - 2nd degree, Reactive agents - 1st degree

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious); polymerization hazard]:

General First Aid:

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious); polymerization hazard]:

Immediate precautionary measure