Isopropanol, Isopropyl alcohol, ไอโซโพรพานอล, ไอโซโพรพิลแอลกอฮอล์

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นำเข้าและจำหน่าย Isopropanol, Isopropyl alcohol, ไอโซโพรพานอล, ไอโซโพรพิลแอลกอฮอล์ สอบถามข้อมูลเพิ่มเติมได้ที่ ฝ่ายขาย  บริษัท ไทยโพลีเคมิคอล จำกัด โทรศัพท์ 034854888, 034496284 มือถือ 0824504888, 0800160016 โทรสาร 034854899, 034496285 

ไอโซโพรพานอล, Isopropanol, ไอโซโพรพิลแอลกอฮอล์, Isopropyl alcohol, ไอพีเอ, IPA

ชื่อ ไอโซโพรพิลแอลกอฮอล์ (Isopropyl alcohol)

ชื่ออื่น Isopropanol, IPA, 2-Propanol, Propan-2-ol, Dimethyl carbinol, Rubbing alcohol

สูตรโมเลกุล C3H8O น้ำหนักโมเลกุล 60.1 CAS

Number 67-63-0 UN Number 1219

ไอโซโพรพิลแอลกอฮอล์ (isopropyl alcohol) เป็นแอลกอฮอล์ชนิดหนึ่ง มีราคาถูก มีคุณสมบัติฆ่าเชื้อโรคได้ (disinfectant) จึงถูกใช้ในการทำความสะอาด บางครั้งอาจเรียกว่า แอลกอฮอล์เช็ดทำความสะอาด (rubbing alcohol) ก็ได้ สามารถ พบไอโซโพรพิลแอลกอฮอล์ในน้ำยาทำความสะอาด

น้ำยาฆ่าเชื้อ สูตรต่างๆ ทั้งที่ใช้ในโรงพยาบาล ตามบ้าน และตามโรงงานต่างๆ

โดยมักจะใช้ที่ความเข้มข้นประมาณ 70 % นอกจากนี้ยังใช้เป็นตัวทำละลาย (solvent) ในโรงงานอุตสาหกรรมต่างๆ อีกด้วย พิษของแอลกอฮอล์ชนิดนี้จะทำให้เกิดอาการเมาได้เหมือนพิษของเอทิลแอลกอฮอล์ สามารถกดสมองและกดการหายใจได้อย่างรุนแรง แต่มักไม่ก่อภาวะเลือดเป็นกรดอย่างรุนแรง (high gap metabolic acidosis) แบบเมทิลแอลกอฮอล์, ไอโซโพรพานอลเป็นสารในตระกูลแอลกอฮอล์ ไม่มีสี

มีกลิ่นเฉพาะตัว ระเหยได้ง่าย ใช้ผสมในน้ำยาล้างเล็บ กาว น้ำมันชักเงา สี

และใช้เป็นยาฆ่าเชื้อโรค เป็นสารตั้งต้นสำหรับผลิต
อะซีโตน,

Isopropyl alcohol is a chemical

compound with the molecular formula C3H8O or C3H7OH. It is a colorless,

flammable chemical compound with a strong odor. It is the simplest example of a

secondary alcohol, where the alcohol carbon atom is attached to two other

carbon atoms sometimes shown as (CH3)2CHOH. It is a structural isomer of

propanol. Isopropyl alcohol is denatured for certain uses, in which case the

NFPA 704 rating is changed to 2,3,1. Isopropyl alcohol is miscible in water,

alcohol, ether and chloroform. It will dissolve ethyl cellulose, polyvinyl

butyral, many oils, alkaloids, gums and natural resins.[3] It is insoluble in

salt solutions. Unlike ethanol or methanol, isopropyl alcohol can be separated

from aqueous solutions by adding a salt such as sodium chloride, sodium

sulfate, or any of several other inorganic salts, since the alcohol is much

less soluble in saline solutions than in salt-free water. The process is

colloquially called salting out, and causes concentrated isopropyl alcohol to

separate into a distinct layer.

Isopropyl alcohol forms an

azeotrope with water, which gives a boiling point of 80.37 oC and a composition

of 87.7 wt% (91 vol%) isopropyl alcohol. Water-isopropyl alcohol mixtures have

depressed melting points. It has a slightly bitter taste, and is not safe to

drink.

Isopropyl alcohol becomes

increasingly viscous with decreasing temperature. At temperatures below ?70 ?C Isopropyl alcohol resembles maple syrup

in viscosity. Isopropyl alcohol has a maximum absorbance at 204 nm in an ultraviolet-visible

spectrum.

Uses

In 1990, 45 thousand tonnes of

isopropyl alcohol were used in the United States. The vast majority of

isopropyl alcohol was used as a solvent for coatings or for industrial

processes. Isopropyl alcohol in particular is popular for pharmaceutical

applications, presumably due to the low toxicity of any residues. Some

isopropyl alcohol is used as a chemical intermediate. Isopropyl alcohol may be

converted to acetone, but the cumene process is more significant. In that year,

a tiny fraction (5.4 tonnes) was consumed for household use and in personal

care products. It is also used as a gasoline additive.

 Solvent

Isopropyl alcohol dissolves a wide

range of non-polar compounds. It also evaporates quickly and is relatively

non-toxic, compared to alternative solvents. Thus it is used widely as a

solvent and as a cleaning fluid, especially for dissolving oils. Together with

ethanol, n-butanol, and methanol, it belongs to the group of alcohol-based

solvents, about 6.4 million tonnes of which were utilized worldwide in 2011.

Examples of this application

include cleaning electronic devices such as contact pins (like those on ROM

cartridges), magnetic tape and disk heads (such as those in audio and video

tape recorders and floppy disk drives), the lenses of lasers in optical disc

drives (e.g. CD, DVD) and removing thermal paste from heatsinks and IC packages

(such as CPUs. Isopropyl alcohol is used in keyboard, LCD and laptop cleaning,

is sold commercially as a whiteboard cleaner, and is a strong but safer

alternative to common household cleaning products. It is commonly used to clean

prepared optical fibers just before splicing. It is used to clean LCD and glass

computer monitor screens (at some risk to the anti-reflection coating on some

screens[citation needed]), and used to give second-hand or worn non-vinyl

phonograph records newer-looking sheen. It is effective at removing Hot-Melt

Adhesive from a large variety of surfaces. Isopropyl alcohol should not be used

to clean vinyl records as it may leach plasticizer from the vinyl making it

more rigid[citation needed]. It is effective at removing residual glue from

some sticky labels although some other adhesives used on tapes and paper labels

are resistant to it. It can also be used to remove stains from most fabrics,

wood, cotton, etc. In addition it can also be used to clean paint or other oil

based products so that they may be reused, commonly known as

"repainting." It is used as a wetting agent in the fountain solution

used in lithographic printing, and often used as a solvent for French polishing

shellac used in cabinet making.

Intermediate

Isopropyl alcohol is esterified to

give isopropyl acetate, another solvent. It reacts with carbon disulfide and

sodium hydroxide to give sodium isopropylxanthate, a herbicide and an ore

flotation reagent. Isopropyl alcohol reacts with titanium tetrachloride and

aluminium metal to give titanium and aluminium isopropoxides respectively, the

former a catalyst, and the latter a chemical reagent. This compound may serve

as a chemical reagent in itself, by acting as a dihydrogen donor in transfer

hydrogenation.

Medical

Disinfecting pads typically

contain a 60?70% solution of isopropyl alcohol in water. A 75% v/v solution in

water may be used as a hand sanitizer.[14] Isopropyl alcohol is used as a

water-drying aid for the prevention of otitis externa, better known as

swimmer's ear.

Early uses as an anesthetic

Although isopropanol can be

technically used for anesthesia, its many negative drawbacks prohibit this use.

Isopropanol can also be used similar to ether as a solvent[16] or anesthesia by

inhaling the fumes or orally. Early uses included using the solvent as general

anesthesia for small mammals and rodents by scientists and some veterinarians.

However, it was soon discontinued as many complications arose including

respiratory irritation, internal bleeding, visual and hearing problems. In rare

cases, respiratory failure leading to death in animals was observed. Like

ether, isopropanol is also very volatile and due to their medical

complications, both are prohibited to be used for either human or animal uses,

either lab or medical unless approved by IACC.[citation needed

Automotive

Isopropyl alcohol is a major

ingredient in "gas dryer" fuel additives. In significant quantities,

water is a problem in fuel tanks, as it separates from the gasoline, and can

freeze in the supply lines at cold temperatures. It does not remove water from

gasoline; rather, the alcohol solubilizes water in gasoline. Once soluble,

water does not pose the same risk as insoluble water as it will no longer

accumulate in the supply lines and freeze. Isopropyl alcohol is often sold in

aerosol cans as a windshield de-icer. Isopropyl alcohol is also used to remove

brake fluid traces from hydraulic braking systems, so that the brake fluid

(usually DOT 3, DOT 4 or mineral oil) does not contaminate the brake pads,

which would result in poor braking.

Laboratory

As a biological specimen

preservative, isopropyl alcohol provides a comparatively non-toxic alternative

to formaldehyde and other synthetic preservatives. Isopropyl alcohol solutions

of 70?99% are used to preserve specimens. Isopropyl alcohol is often used in

DNA extraction. It is added to a DNA solution in order to precipitate the DNA

into a 'pellet' after centrifuging the DNA. This is possible because DNA is

insoluble in isopropyl alcohol.

Isopropanol (IPA) is one of the

most widely used solvents in the world; also used as a chemical intermediate.

See Product Uses.

 IPA exposure is possible in both industrial

and consumer applications. Occupational exposure limits have been established

to control the allowable amount of exposure in workplace settings. Consumer

exposure, generally infrequent and short in duration, is also highly dependent

upon the conditions under which IPA is used. See Exposure Potential.

 IPA does not cause adverse health or

environmental effects at levels typically found in the workplace or in the

environment.

 Flammable with high vapor pressure; use good

ventilation and avoid all ignition sources. See Physical Hazard Information.

The largest use for IPA is as a

solvent. The second largest use is as a chemical intermediate. IPA is also

found in many everyday products such as paints, inks, general-purpose cleaners,

disinfectants, room sprays and windshield deicing agents.

IPA is commonly used in

nitrocellulose-based lacquers and thinners for wood finishing, in adhesives,

pharmaceuticals, cosmetics and toiletries, disinfectants, rubbing compounds,

and lithography. It is also used as an ingredient in cleaners and polishers, as

a chemical intermediate, and as a dehydrating agent and extractant.

 

 

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Email1 : thaipolychemicals@hotmail.com

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IsopropanolไอโซโพรพานอลalcoholIPAIsopropylไอพีเอไอโซโพรพิลแอลกอฮอล์
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