Cyclopentanol

86.134

86.13

202-504-8

1L43Q07TBU

49117

2244

DTXSID1033371

Colorless, viscous liquid

2906199090

20.2

0.71

Cyclopentanol appears as a colorless viscous liquid with a pleasant odor. Slightly less dense than water. Vapors heavier than air. Used to make perfumes and pharmaceuticals.

0.9478 g/cm³ @ Temp: 20 °C

-19 °C

140.4 °C @ Press: 760 Torr

124 DEG F (51 DEG C) (CLOSED CUP)

1.487

Sparingly soluble in water. soluble in ethanol.

IN GENERAL, MATERIALS WHICH ARE TOXIC AS STORED OR WHICH CAN DECOMP INTO TOXIC COMPONENTS SHOULD BE STORED IN COOL, WELL-VENTILATED PLACE, OUT OF DIRECT RAYS OF SUN, AWAY FROM AREAS OF HIGH FIRE HAZARD & SHOULD BE PERIODICALLY INSPECTED & MONITORED.

1892 mm Hg @ 25 deg C

2.97 (AIR= 1)

Odor of amyl alcohol, somewhat like peppermint

1.07e-11 cm3/molecule*sec

Flammable. Soluble in water.

Alcohols and Polyols

CYCLOPENTANOL 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.

Cyclopentanol|D*: Other compounds that may form peroxides|1 samples had 3 ppm peroxide; age >1 yrs|Management of time-sensitive chemicals (JCHAS)

III

3

UN 2244 3/PG 3

1

R10

S16

Xi: Irritant;

Stable. Flammable. Incompatible with strong oxidizing agents, acid chlorides, acid anhydrides.

P210, P233, P240, P241, P242, P243, P260, P262, P264, P270, P280, P301+P310, P302+P350, P303+P361+P353, P305+P351+P338, P309+P311, P310, P321, P322, P330, P337+P313, P361, P363, P370+P378, P403+P235, P405, P501

H226

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.

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]: HIGHLY FLAMMABLE: Will be easily 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 ground and collect in low or confined areas (sewers, basements, tanks). 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 are lighter than water. (ERG, 2016)|Flammable - 2nd degree

|Warning|H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501|Aggregated GHS information provided by 55 companies from 3 notifications to the ECHA C&L Inventory.|Danger|H226: Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P260, P262, P264, P270, P280, P301+P310, P302+P350, P303+P361+P353, P305+P351+P338, P309+P311, P310, P321, P322, P330, P337+P313, P361, P363, P370+P378, P403+P235, P405, and P501

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

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection. (ERG, 2016)|... Wear appropriate chemical protective gloves, boots and goggles. Wear positive pressure self-contained breathing apparatus. ...

MODERATE, IN PRESENCE OF HEAT OR FLAME.

If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped or safely confined. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Use "alcohol" foam, dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard.|Personnel protection: Keep upwind. Avoid breathing vapors. ... Do not handle broken packages unless wearing appropriate personal protective equipment.

/GUIDE 129: FLAMMABLE LIQUIDS (Polar/Water-Miscible/Noxious)/ Fire or Explosion: HIGHLY FLAMMABLE: Will be easily 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 ground and collect in low or confined areas (sewers, basements, tanks). 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 are lighter than water.|/GUIDE 129: FLAMMABLE LIQUIDS (Polar/Water-Miscible/Noxious)/ Health: May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.|/GUIDE 129: FLAMMABLE LIQUIDS (Polar/Water-Miscible/Noxious)/ Public Safety: CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number listed on the inside back cover. As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering.|/GUIDE 129: FLAMMABLE LIQUIDS (Polar/Water-Miscible/Noxious)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection.|For more DOT Emergency Guidelines (Complete) data for CYCLOPENTANOL (8 total), please visit the HSDB record page.

No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.

| 0 - Materials that, under emergency conditions, would offer no hazard beyond that of ordinary combustible materials.| 2 - Materials that must be moderately heated or exposed to relatively high ambient temperatures before ignition can occur. Materials would not under normal conditions form hazardous atmospheres with air, but under high ambient temperatures or under moderate heating could release vapor in sufficient quantities to produce hazardous atmospheres with air.| 0 - Materials that in themselves are normally stable, even under fire conditions.

Cyclopentanol was detected in 10% of expired air samples taken from an urban population of humans(28 subjects, 224 expired air samples); the average concentration was 0.9 ng cyclopentanol/L expired air(1). 8.5% of 387 expired air samples from 54 human subjects contained cyclopentanol at an average concentration of 0.329 ng/L expired air(2).

Cyclopentanol's production and use as a perfume and pharmaceutical solvent and as an intermediate for dyes, pharmaceuticals, and other organics(1) may result in its release to the environment through various waste streams.

TERRESTRIAL FATE: Based on a recommended classification scheme(1), an estimated Koc value of 58(SRC), determined from a measured log Kow(2) and a recommended regression-derived equation(3), indicates that cyclopentanol will have high mobility in soil(SRC); leaching of this compound may be important under some environmental conditions(SRC). In soil, cyclopentanol is expected to readily biodegrade(SRC). In tests using activated sludge inocula, 95% of the inital COD (cyclopentanol at 200 mg/L COD), was removed over 120 hours(4); 97%(5) of the theoretical BOD was obtained within 5 days (cyclopentanol at 100 mg/L). Volatilization of cyclopentanol should be important from dry soil surfaces(SRC) given a measured vapor pressure of 1892 mm Hg at 25 °C(6). Volatilization from moist soil surfaces will be very slow(SRC) based on an estimated Henry's Law constant of 2.6X10-6 atm-cu m/mole(7,SRC).|AQUATIC FATE: Based on a recommended classification scheme(1), an estimated Koc value of 58(SRC), determined from an experimental log Kow(2) and a recommended regression-derived equation(3), indicates that cyclopentanol will not adsorb to suspended solids and sediment(SRC) in the water. Cyclopentanol is expected to readily biodegrade in water(SRC). In tests using activated sludge inocula, 95% of the inital COD (cyclopentanol at 200 mg/L COD), was removed over 120 hours(4); 97%(5) of the theoretical BOD was obtained within 5 days (cyclopentanol at 100 mg/L). Cyclopentanol will volatilize from water surfaces based on an estimated Henry's Law constant of 2.6X10-6 atm-cu m/mole(SRC), developed using a fragment constant estimation method(6). Estimated half-lives for a model river and model lake are 13 and 98 days, respectively(3,SRC). An estimated BCF value of 2(3,SRC), from a measured log Kow(2), suggests that cyclopentanol will bioconcentrate in aquatic organisms(SRC) according to a recommended classification scheme(7).|ATMOSPHERIC FATE: According to a suggested classification scheme(1), a measured vapor pressure of 1892 mm Hg at 25 °C(2) indicates that cyclopentanol will mainly exist in the vapor phase in the ambient atmosphere. Vapor-phase cyclopentanol 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 about 1.5 days(3,SRC).

The rate constant for the vapor-phase reaction of cyclopentanol with photochemically produced hydroxyl radicals has been measured as 10.7X10-12 cu cm/molecule-sec at 25 °C(1). This corresponds to an atmospheric half-life of about 1.5 days at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1,SRC).

An estimated BCF value of 2 was calculated for cyclopentanol(SRC), using a measured log Kow of 0.71(1) and a recommended regression-derived equation(2). According to a classification scheme(3), this BCF value suggests that bioconcentration in aquatic organisms will not be low(SRC).

The Koc of cyclopentanol is estimated as approximately 58(SRC), using a measured log Kow of 0.71(1) and a regression-derived equation(2,SRC). According to a recommended classification scheme(3), this estimated Koc value suggests that cyclopentanol has high mobility in soil(SRC).

The Henry's Law constant for cyclopentanol is estimated as 2.6X10-6 atm-cu m/mole(SRC) using a fragment constant estimation method(1). This value indicates that cyclopentanol will volatilize from water surfaces(2,SRC). 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) is estimated as approximately 13 days(2,SRC). The volatilization half-life from a model lake (1 m deep, flowing 0.05 m/sec, wind velocity of 0.5 m/sec) is estimated as approximately 98 days(2,SRC). Cyclopentanol's high vapor pressure, 1892 mm Hg(3) indicates that volatilization from dry soil surfaces should occur(SRC); based on this compound's Henry's Law constant(1,SRC), significant volatilization from moist soil surfaces is not expected(SRC).

Cyclopentanol is present, at unreported concentrations, as a volatile component of aroma for both beef and pork(1).

The general population may be exposed to cyclopentanol via inhalation of perfumes or the ingestion of foods containing this compound. Occupational exposure may occur through inhalation and dermal contact. (SRC)

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]: May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution. (ERG, 2016)

Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]: 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. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. Wash skin with soap and 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. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2016)

LIQUID ALICYCLIC HYDROCARBONS WILL DEHYDRATE & DELIPIDIZE SKIN ON REPEATED OR PROLONGED CONTACT & CAUSE DERMATITIS. DIRECT CONTACT...WITH LUNG TISSUE (ASPIRATION) WILL CAUSE PULMONARY EDEMA, PNEUMONITIS & HEMORRHAGE. VAPORS IN SUFFICIENT CONCN WILL CAUSE IRRITATION OF MUCOUS MEMBRANES. /ALICYCLIC HYDROCARBONS/|TOXICOLOGICALLY, THE ALICYCLIC HYDROCARBONS RESEMBLE THEIR OPEN CHAIN RELATIVES, THE ALIPHATIC HYDROCARBONS. IN GENERAL, THEY ARE ANESTHETICS & CNS DEPRESSANTS WITH A RELATIVLY LOW ORDER OF ACUTE TOXICITY. ...CUMULATIVE TOXICITY FROM REPEATED EXPOSURE TO LOW ATMOSPHERIC CONCN IS IMPROBABLE. /ALICYCLIC HYDROCARBONS/

cyclopentanol

Cyclopentanol: ACTIVE

Cyclopentanol was detected in expired air samples following adsorption onto Texax GC adsorbent followed by GC/FID.

CYCLIC AMINES, KETONES, & ALCOHOLS EXTRACTED FROM URINE, SEPARATED BY GAS CHROMATOGRAPHY & QUANTATIVELY DETERMINED FROM STD CURVES BASED ON PEAK HEIGHTS RELATIVE TO THOSE OF ALKANES USED AS INTERNAL STD.

Food additives -> Flavoring Agents|Fire Hazards -> Flammable - 2nd degree

Flavoring Agents