1-Buten-3-yne

52.07

52.07

211-713-3

VW72FM10OQ

1954

DTXSID4029199

Colorless gas or liquid

0

0.80560

1-buten-3-yne appears as a colorless gas or liquid. Derived by the dimerization of acetylene. Used in the synthesis of neoprene and for other organic syntheses.

0.7095 g/cm³ @ Temp: 0 °C

203 °C @ Solvent: Water

5.1 °C @ Press: 760 Torr

1.408

In water, 1.79X10+3 mg/l @ 30 deg C

1,350 mm Hg @ 25 deg C

1.80 (AIR= 1)

Inhalation-Mouse LC50: 97200 mg/m3/2 hours

Thermal decomposition emits spicy and irritating smoke

Forms explosive peroxides with air or oxygen. Very exothermic decomposition when heated. Reacts explosively when heated with 1,3-butadiene or oxygen. Reacts with silver nitrate to form the explosive silver buten-3-ynide.

acetylene-like odor

Highly flammable. Oxidizes in air to form unstable peroxides that may explode spontaneously.

Hydrocarbons, Aliphatic Unsaturated

Highly Flammable

1-BUTEN-3-YNE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. Forms an explosive salt with silver nitrate. Thermally unstable, under pressure, in combination with 1,3-butadiene [Loss Prev., 1971, 5, 67].

Vinyl acetylene|C: Compounds that autopolymerize due to peroxide formation if inhibitors are depleated or not present|Kelly|Several incidents in the literature where either explosions have occured or explosive levels of peroxide have built up. See Bretherick's|Hennion, G. F. et al., Org. Synth., 1963, Coll. Vol. 4, 684

2.1

1954

R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .

S36:Wear suitable protective clothing . S24/25:Avoid contact with skin and eyes .

Xn

The warehouse is ventilated, low temperature and dry; airtight storage; stored separately from oxidants and acids; not easy to store for a long time to prevent the formation of peroxides

It forms peroxide with air and oxygen, which is easy to explode; it decomposes rapidly when heated; it mixes with 1,3-butadiene or oxygen to heat and explode; it reacts with silver nitrate and explodes

P210, P377, P381, P403, P41, P403

H220

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Forms explosive peroxides with air or oxygen. ... Reacts explosively when heated with 1,3-butadiene or oxygen. Reacts with silver nitrate to form the explosive silver buten-3-ynide.

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. CAUTION: Hydrogen (UN1049), Deuterium (UN1957), Hydrogen, refrigerated liquid (UN1966) and Methane (UN1971) are lighter than air and will rise. Hydrogen and Deuterium fires are difficult to detect since they burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.) Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. (ERG, 2016)|Flammable - 4th degree, Reactive - 3rd degree

|Danger|H220 (100%): Extremely flammable gas [Danger Flammable gases]|P210, P377, P381, P403, and P410+P403|Aggregated GHS information provided by 68 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: DO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED. CAUTION: Hydrogen (UN1049), Deuterium (UN1957) and Hydrogen, refrigerated liquid (UN1966) burn with an invisible flame. Hydrogen and Methane mixture, compressed (UN2034) may burn with an invisible flame. SMALL FIRE: Dry chemical or CO2. LARGE FIRE: Water spray or fog. Move containers from fire area if you can do it without risk. FIRE INVOLVING TANKS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2016)

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. LARGE SPILL: Consider initial downwind evacuation for at least 800 meters (1/2 mile). FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. In fires involving Liquefied Petroleum Gases (LPG) (UN1075); Butane, (UN1011); Butylene, (UN1012); Isobutylene, (UN1055); Propylene, (UN1077); Isobutane, (UN1969); and Propane, (UN1978), also refer to BLEVE - SAFETY PRECAUTIONS (ERG page 368). (ERG, 2016)

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: 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. If possible, turn leaking containers so that gas escapes rather than liquid. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Do not direct water at spill or source of leak. Prevent spreading of vapors through sewers, ventilation systems and confined areas. Isolate area until gas has dispersed. CAUTION: When in contact with refrigerated/cryogenic liquids, many materials become brittle and are likely to break without warning. (ERG, 2016)

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids. (ERG, 2016)

lower explosive limit: 2%, upper explosive limit: 100%|Forms explosive peroxides with air or oxygen. Very exothermic decomposition when heated. Reacts explosively when heated with 1,3-butadiene or oxygen. Reacts with silver nitrate to form the explosive silver buten-3-ynide.

practically nontoxic

LC50 Mouse inhalation 97,200 mg/cu m/2 hr

1-Buten-3-yne's production and use as a chemical intermediate(1) may result in its release to the environment through various waste streams(SRC).

TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 70(SRC), determined from a measured water solubility of 1,790 mg/l(2) and a regression-derived equation(3), indicates that 1-buten-3-yne is expected to have high mobility in soil(SRC). Volatilization of 1-buten-3-yne from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 0.029(SRC), calculated from its vapor pressure of 1,350 mm Hg(4) and water solubility(2). The potential for volatilization of 1-buten-3-yne from dry soil surfaces may exist(SRC) based upon its vapor pressure(4).|AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 70(SRC), determined from a measured water solubility of 1,790 mg/l(2) and a regression-derived equation(3), indicates that 1-buten-3-yne is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon an estimated Henry's Law constant of 0.029 atm-cu m/mole(SRC), calculated from its vapor pressure of 1,350 mm Hg(4) and water solubility(2). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 2 and 69 hours, respectively(SRC). According to a classification scheme(5), an estimated BCF of 10(SRC), determined from an estimated log Kow of 1.4(6) and a regression-derived equation(7), suggests the potential for bioconcentration in aquatic organisms is low(SRC).|ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 1-buten-3-yne, which has a vapor pressure of 1,350 mm Hg at 25 °C(2), is expected to exist in the gas phase in the ambient atmosphere. Gas-phase 1-buten-3-yne is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 10 hours(SRC), calculated from its rate constant of 40X10-12 cu cm/molecule-sec at 25 °C(SRC) determined using a structure estimation method(3).

The rate constant for the vapor-phase reaction of 1-buten-3-yne with photochemically-produced hydroxyl radicals has been estimated as 40X10-12 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1). This corresponds to an atmospheric half-life of about 10 hours at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). The rate constant for the vapor-phase reaction of 1-buten-3-yne with ozone has been estimated as 0.2X10-17 cu cm/molecule-sec at 25 °C(SRC) using a structure estimation method(1). This corresponds to an atmospheric half-life of about 6 days at an atmospheric concentration of 7X10+11 ozone molecules per cu cm(2). 1-Buten-3-yne is not expected to undergo hydrolysis in the environment due to the lack of hydrolyzable functional groups(3).

An estimated BCF of 10 was calculated for 1-buten-3-yne(SRC), using an estimated log Kow of 1.4(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).

The Koc of 1-buten-3-yne is estimated as 70(SRC), using a measured water solubility of 1,790 mg/l(1) and a regression-derived equation(2). According to a classification scheme(3), this Koc value suggests that 1-buten-3-yne is expected to have high mobility in soil.

The Henry's Law constant for 1-buten-3-yne is estimated as 0.029 atm-cu m/mole(SRC) based upon its vapor pressure, 1,350 mm Hg(1), and water solubility, 1,790 mg/l(2). This Henry's Law constant indicates that 1-buten-3-yne is expected to volatilize rapidly from water surfaces(3). Based on this Henry's Law constant, the volatilization half-life from a model river (1 m deep, flowing 1 m/sec, wind velocity of 3 m/sec)(3) is estimated as 2 hours(SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec)(3) is estimated as 70 hours(SRC). 1-Buten-3-yne's estimated Henry's Law constant indicates that volatilization from moist soil surfaces may occur(SRC). The potential for volatilization of 1-buten-3-yne from dry soil surfaces may exist(SRC) based upon its vapor pressure(1).

Occupational exposure to 1-buten-3-yne may occur through inhalation and dermal contact with this compound at workplaces where 1-buten-3-yne is produced or used. (SRC)

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases. (ERG, 2016)

Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. Keep victim calm and warm. (ERG, 2016)

Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . /Aliphatic hydrocarbons and related compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or in respiratory rest. Positive pressure ventilation techniques with a bag-valve-mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Consider drug therapy for pulmonary edema ... . Treat seizures with diazepam (Valium) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Aliphatic hydrocarbons and related compounds/

Petroleum refineries|1-Buten-3-yne: ACTIVE

A GAS CHROMATOGRAPH EQUIPPED WITH A FLAME IONIZATION DETECTOR WAS USED TO DETERMINE 1-BUTEN-3-YNE IN POLLUTED AIR SAMPLES IN AN INDUSTRIAL PLANT.

Fire Hazards -> Flammable - 4th degree, Reactive - 3rd degree