2-Methyl-3-butyn-2-ol

84.12

84.12

635746

204-070-5

EHB904XHKH

1746

523

1987

DTXSID2021949

29052990

20.2

0.318

White to yellow-beige to brown Powder or Crystals

0.8637 g/cm³ @ Temp: 15.5 °C

3 °C

104 °C

77 °F

1.4209-1.4220

Fully miscible.

Flammables area

15 mm Hg ( 20 °C)

Relative vapour density (air = 1): 2.9

Oral-Rat LD50: 1950 mg/kg; Oral-Mouse LD50: 500 mg/kg

Inflammable in case of fire, high temperature and oxidant

1.8-16%(V)

3.91e-06 atm-m3/mole

Highly flammable.

Alcohols and Polyols

Highly Flammable

2-METHYL-2-HYDROXY-3-BUTYNE is an alcohol. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides.

350 °C

The vapour mixes well with air, explosive mixtures are easily formed.

II

3

UN 1987 3/PG 2

1

10-22-41

26-39-16

ES0810000

Xn

The warehouse is ventilated, low temperature and dry; stored separately from oxidants and acids

Stable. Flammable. Incompatible with strong oxidizing agents.

P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P312, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P330, P370+P378, P403+P233, P403+P235, P405, P501

H225

Special Hazards of Combustion Products: Irritating and toxic gases, such as carbon dioxide and carbon monoxide, may be produced in fire. (USCG, 1999)|Highly flammable. Vapour/air mixtures are explosive. Risk of explosion on contact with copper.

|Danger|H225 (47.32%): Highly Flammable liquid and vapor [Danger Flammable liquids]|P201, P202, P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P281, P301+P312, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, and P501|Aggregated GHS information provided by 434 companies from 19 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H225: Highly Flammable liquid and vapor [Danger Flammable liquids]|P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P312, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P330, P370+P378, P403+P233, P403+P235, P405, and P501

Fire Extinguishing Agents Not to Be Used: Water. Fire Extinguishing Agents: Dry chemical, alcohol foam or carbon dioxide. (USCG, 1999)|Use carbon dioxide, foam, dry powder. NO water. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact of the substance with water.

Excerpt from ERG Guide 127 [Flammable Liquids (Water-Miscible)]: As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet). FIRE: If tank, rail car or tank truck 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, 2016)

Excerpt from ERG Guide 127 [Flammable Liquids (Water-Miscible)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in 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 or cover with dry earth, sand or other non-combustible material and transfer to containers. 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, 2016)

Wear full impervious protective clothing and approved respirator. Where splashing is possible wear full face shield or chemical safety goggles. Use approved respirator to protect against vapors. (USCG, 1999)

Explosive limits , vol% in air: 1.8-16

Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.

Fireproof. Separated from strong oxidants, acids and copper. Cool.

No indication can be given about the rate at which a harmful concentration of this substance in the air is reached.

The substance is irritating to the eyes.

If powder: NO open flames, NO sparks, and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.

Use ventilation.

Protective gloves.

Wear safety goggles.

moderately toxic

Contact will cause eye and skin irritation. Vapor exposure may cause eye and respiratory tract irritation. (USCG, 1999)

Get medical attention. INHALATION: Remove to fresh air. If breathing is difficult, give oxygen. EYES: Flush with water for at least 15 min., lifting lids occasionally. SKIN: Remove contaminated clothing and shoes. Flush with water. (USCG, 1999)

Fresh air, rest.

Rinse skin with plenty of water or shower.

Rinse with plenty of water (remove contact lenses if easily possible).

2-methyl-3-butyn-2-ol

The substance can be absorbed into the body by ingestion.

Cough.

Redness. Pain.

All other basic organic chemical manufacturing|3-Butyn-2-ol, 2-methyl-: ACTIVE