4-Methylmorpholine

0.9 @25 °C

75 °F (NFPA, 2010)

75 °F

115 °C @760 [mm Hg]

13.2 [mmHg]

4-methylmorpholine appears as a water-white liquid with an ammonia-like odor. Less dense than water and insoluble in water. May be moderately toxic by ingestion, inhalation and skin absorption. Very irritating to skin, eyes, and mucous membranes. Used as a solvent and to make pharmaceuticals.

Liquid

A water-white liquid with an ammonia-like odor; [CAMEO]

7.4

788

787

1080

This chemical does not meet GHS hazard criteria for 2% (14 of 715) of reports.

Danger

H225 (89.1%): Highly Flammable liquid and vapor [Danger Flammable liquids]；H302 (94.5%): Harmful if swallowed [Warning Acute toxicity, oral]；H312 (55.4%): Harmful in contact with skin [Warning Acute toxicity, dermal]；H314 (98%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]；H318 (40.3%): Causes serious eye damage [Danger Serious eye damage/eye irritation]；H332 (38.7%): Harmful if inhaled [Warning Acute toxicity, inhalation]

P210, P233, P240, P241, P242, P243, P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 715 reports by companies from 14 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Reported as not meeting GHS hazard criteria per 14 of 715 reports by companies.；There are 13 notifications provided by 701 of 715 reports by companies with hazard statement code(s).；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Chemical: Morpholine, 4-methyl-

Morpholine, 4-methyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Morpholine, 4-methyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 21-06-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/13472；Status: Active Update: 08-06-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/10571

Morpholine, 4-methyl-: HSNO Approval: HSR001392 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.)

Flammable Liquid Corrosive

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas (sewers, basements, tanks, etc.). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids will float on water. (ERG, 2024)

· Flammable/combustible material.；· May be ignited by heat, sparks or flames.；· Vapors may form explosive mixtures with air.；· Vapors may travel to source of ignition and flash back.；· Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas (sewers, basements, tanks, etc.).；· Vapor explosion hazard indoors, outdoors or in sewers.；· Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.；· Runoff to sewer may create fire or explosion hazard.；· Containers may explode when heated.；· Many liquids will float on water.

· Flammable/combustible material.；· May be ignited by heat, sparks or flames.；· Vapors may form explosive mixtures with air.；· Vapors may travel to source of ignition and flash back.；· Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas (sewers, basements, tanks, etc.).；· Vapor explosion hazard indoors, outdoors or in sewers.；· Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.；· Runoff to sewer may create fire or explosion hazard.；· Containers may explode when heated.；· Many liquids will float on water.

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；May cause toxic effects if inhaled or ingested. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)

· May cause toxic effects if inhaled or ingested.；· Contact with substance may cause severe burns to skin and eyes.；· Fire will produce irritating, corrosive and/or toxic gases.；· Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas.；· Runoff from fire control or dilution water may cause environmental contamination.

· May cause toxic effects if inhaled or ingested.；· Contact with substance may cause severe burns to skin and eyes.；· Fire will produce irritating, corrosive and/or toxic gases.；· Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas.；· Runoff from fire control or dilution water may cause environmental contamination.

Reported cause of occupational asthma in 16.6% of 48 chemical manufacturing workers; [Malo] Corrosive to skin and eyes; [CAMEO]

2535 132

2535 132

Amines, Phosphines, and Pyridines；Ethers

Highly Flammable

Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

4-Methylmorpholine or n-methylmorpholine

UN2535

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

Class 3 Flammable and combustible liquid (49 eCFR § 173.120)；Class 8 Corrosive material (49 eCFR § 173.136)

PG II: the degree of danger presented by the material is medium；For more information about the packing group assignment, please visit 49 eCFR § 173

Highly flammable. Insoluble in water.

Flam. Liq. 2 (89.1%)；Acute Tox. 4 (94.5%)；Acute Tox. 4 (55.4%)；Skin Corr. 1B (98%)；Eye Dam. 1 (40.3%)；Acute Tox. 4 (38.7%)

Flammable liquids - Category 2；Acute toxicity (Dermal) - Category 4

Flammable agents - 3rd degree

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；Some of these materials may react violently with water.；SMALL FIRE: Dry chemical, CO2, water spray or alcohol-resistant foam.；LARGE FIRE: Water spray, fog or alcohol-resistant foam. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal. Do not get water inside containers.；FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)

· 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.；· Keep unauthorized personnel away.；· Stay upwind, uphill and/or upstream.；· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.；· All equipment used when handling the product must be grounded.；· Do not touch or walk through spilled material.；· Stop leak if you can do it without risk.；· Prevent entry into waterways, sewers, basements or confined areas.；· A vapor-suppressing foam may be used to reduce vapors.；· Absorb with earth, sand or other non-combustible material.；· For hydrazine, absorb with DRY sand or inert absorbent (vermiculite or absorbent pads).；· Use clean, non-sparking tools to collect absorbed material.；Large Spill；· Dike far ahead of liquid spill for later disposal.；· Water spray may reduce vapor, but may not prevent ignition in closed spaces.

· 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.；· Keep unauthorized personnel away.；· Stay upwind, uphill and/or upstream.；· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.；· All equipment used when handling the product must be grounded.；· Do not touch or walk through spilled material.；· Stop leak if you can do it without risk.；· Prevent entry into waterways, sewers, basements or confined areas.；· A vapor-suppressing foam may be used to reduce vapors.；· Absorb with earth, sand or other non-combustible material.；· For hydrazine, absorb with DRY sand or inert absorbent (vermiculite or absorbent pads).；· Use clean, non-sparking tools to collect absorbed material.；Large Spill；· Dike far ahead of liquid spill for later disposal.；· Water spray may reduce vapor, but may not prevent ignition in closed spaces.

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；Refer to the "General First Aid" section. Specific First Aid: For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. (ERG, 2024)

General First Aid:；· Call 911 or emergency medical service.；· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.；· Move victim to fresh air if it can be done safely.；· Administer oxygen if breathing is difficult.；· If victim is not breathing:；-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.；-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).；-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.；· Remove and isolate contaminated clothing and shoes.；· For minor skin contact, avoid spreading material on unaffected skin.；· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.；· For severe burns, immediate medical attention is required.；· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.；· Keep victim calm and warm.；· Keep victim under observation.；· For further assistance, contact your local Poison Control Center.；· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.；Specific First Aid:；· For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required.

General First Aid:；· Call 911 or emergency medical service.；· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.；· Move victim to fresh air if it can be done safely.；· Administer oxygen if breathing is difficult.；· If victim is not breathing:；-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.；-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).；-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.；· Remove and isolate contaminated clothing and shoes.；· For minor skin contact, avoid spreading material on unaffected skin.；· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.；· For severe burns, immediate medical attention is required.；· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.；· Keep victim calm and warm.；· Keep victim under observation.；· For further assistance, contact your local Poison Control Center.；· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.；Specific First Aid:；· For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required.

· Wear positive pressure self-contained breathing apparatus (SCBA).；· Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.；· Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

· Wear positive pressure self-contained breathing apparatus (SCBA).；· Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE.；· Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb with earth, sand or other non-combustible material. For hydrazine, absorb with DRY sand or inert absorbent (vermiculite or absorbent pads). Use clean, non-sparking tools to collect absorbed material.；LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2024)

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.；SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.；FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)

Immediate precautionary measure；· Isolate spill or leak area for at least 50 meters (150 feet) in all directions.；Spill；· For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.；· For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary.；Fire；· If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

Immediate precautionary measure；· Isolate spill or leak area for at least 50 meters (150 feet) in all directions.；Spill；· For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.；· For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary.；Fire；· If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

10 [ppm]

14 [ppm]

86 [ppm]

Excerpt from ERG Guide 132 [Flammable Liquids - Corrosive]:；Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2024)

· Some of these materials may react violently with water.；Small Fire；· Dry chemical, CO2, water spray or alcohol-resistant foam.；Large Fire；· Water spray, fog or alcohol-resistant foam.；· If it can be done safely, move undamaged containers away from the area around the fire.；· Dike runoff from fire control for later disposal.；· Do not get water inside containers.；Fire Involving Tanks, Rail Tank Cars or Highway Tanks；· Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.；· Cool containers with flooding quantities of water until well after fire is out.；· Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.；· ALWAYS stay away from tanks in direct contact with flames.；· For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

· Some of these materials may react violently with water.；Small Fire；· Dry chemical, CO2, water spray or alcohol-resistant foam.；Large Fire；· Water spray, fog or alcohol-resistant foam.；· If it can be done safely, move undamaged containers away from the area around the fire.；· Dike runoff from fire control for later disposal.；· Do not get water inside containers.；Fire Involving Tanks, Rail Tank Cars or Highway Tanks；· Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.；· Cool containers with flooding quantities of water until well after fire is out.；· Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.；· ALWAYS stay away from tanks in direct contact with flames.；· For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn.

Dermatotoxin - Skin burns.；Asthma - Reversible bronchoconstriction (narrowing of bronchioles) initiated by the inhalation of irritating or allergenic agents.

LCLo (rat) = 2,000 ppm/4h

Chemical: Morpholine, 4-methyl-

Morpholine, 4-methyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Morpholine, 4-methyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 21-06-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/13472；Status: Active Update: 08-06-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/10571

Morpholine, 4-methyl-: HSNO Approval: HSR001392 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.)

Used as a solvent and to make pharmaceuticals. [CAMEO] Used in poyurethane foam production; [Reference #1]

Plastic Composites Manufacturing [Category: Industry]

2023: 1,000,000 - <2,500,000 lb；2022: 1,000,000 - <2,500,000 lb；2021: 1,000,000 - <2,500,000 lb；2020: 1,000,000 - <2,500,000 lb

Catalyst

Catalyst；Corrosion inhibitor；Intermediate

Petroleum Refineries；All Other Basic Organic Chemical Manufacturing；Plastics Product Manufacturing

Morpholine, 4-methyl-: ACTIVE