5/20/2018 Uses of Phosphoric Acid
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Uses of Phosphoric AcidBy:Want To Know It
Phosphoric acid is mineral acid which molecules that can combine themselves in a number of different ways. These different
combinations are referred to as phosphoric acids. Phosphoric acid is a white solid that melts to form a colorless, viscous
liquid. i!h concentrations of the liquid are corrosive. Phosphoric acid is non"flammable and non"to#ic. $et%s e#amine what
phosphoric acid is used for in the world today.
&ses of Phosphoric 'cid
Phosphoric acid is used as a rust converter. When the solution in liquid or !el form is placed directly on rusted areas of
steel, steel tools or steel surfaces, the rust is converted from the red o#ide to a blac( ferric phosphate. This is common when
pic(lin! steel. 'fter the rust has been converted to blac( ferric phosphate it can easily be scrubbed off.
)ood !rade phosphoric acid is used to carbonate bevera!es such as cola. The phosphoric acid creates a tan!y or sour
taste.
Phosphoric acid is used in dentistry as an etchin! solution. It cleans and rou!hens the surface of the teeth when applyin!dental apparatus such as braces or when applyin! fillin!s.
It is also used in teeth whiteners to eliminate the plaque on teeth prior to the whitenin! process.
Phosphoric acid is also commonly used in over the counter anti"nausea medication.
'nother common use is in p balancin!. It is used in plant fertili*ers, nutrient solutions, in cosmetics and s(in"care products
to create the correct p for the plants or s(in. It is also used to neutrali*e the p of water sources particularly aquariums.
Phosphoric acid is also used as a cleanin! a!ent in the construction industry as its corrosive, non"to#ic properties allow it to
be used to removal mineral deposits, cement smears and hard water stains. +ome household cleaners also use a safer and
less stron! chelant of phosphoric acid. +ome deter!ents also ma(e use of phosphoric acid as a dispersin! a!ent.
It is used as an electrolyte in phosphoric acid fuel cells and when combined with distilled water in o#yhydro!en !enerators.
When heated it is used as an etchin! material to etch silicon nitride.
Phosphoric acid is used by hobby welders as a flu# to aid in solderin!.
Uses of Phosphoric Acid
By Kum artin
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Phosphoric acid or orthophosphoric acid is a mineral acid which is broadly known for its uses. Thisacid is made up of three hydrogen atoms, one phosphorus atom and four oxygen atoms. The chemical
formula of this acid is H3PO4.This acid is very useful in industries and medicines. ere are some of the uses.:
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Uses of Phosphoric Acid
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ost commonly, it is used in removin!dust from the metal surfaces. It is alsoused as rust converter by brin!in! it indirect contact with a rusted iron, orsteel tools and other surfaces that arerusted. It converts the ferric o#ide
which is reddish"brown in color toblac( colored ferric phosphate. Whenthis ferric phosphate is scrubbed off, itwill !ive a new loo( to the surface ofthe metal. -ust remover is found inliquid as well as !el form.In foods, phosphoric acid is used to acidify the foods and bevera!es such as colas. owever,phosphoric acid is (nown to have an adverse on health. It has tan!y or sour taste. It is lowcost and easily available acid.Phosphoric acid is widely used in medicine and dentistry. It is an important in!redient in overthe counter medications to combat nausea. These medications are hi!h in su!ars, namely
!lucose and fructose. )or dental care, it is mi#ed with *inc powder and forms *inc phosphate,and it is useful in temporary dental cement. In orthodontics, *inc is used as an etchin!solution to help clean and rou!hen the surface of teeth.In certain types of fuel cells, phosphoric acid is used as an electrolyte. It is also helpful incleanin! the mineral deposits, cementinous smears and hard water stains.$earnin"education
Phosphoric acid that has many uses inindustrial applications
Phosphoric acid uses
Phosphoric acid is a compound with formula !H3PO4". #t is also called as orthophosphoric acid. #t is
a colorless, transparent and syrupy li$uid which a neutral acid only soluble in water and ethanol. #t is
used most commonly in laboratory preparation of hydrogen halides. #t is also used as a rust con%erter
!often called na%al &elly or rust killer" for con%erting rust into ferric phosphate. Thus it is efficient for
remo%ing rust. #t is a chemical which is produced in large $uantities in food industry. #t is cheaply
produced.
Hence it can be used for pro%iding sour or tangy taste to the processed food. 'ometimes it is used for
the extraction of citric acid in food industry. #t is used in the medical field, basically by the dentists for
the correction of irregularities of the teeth !orthodontics" and for dealing with the anatomy,
de%elopment and diseases of the teeth !dentistry" as an etching solution. #t is also used as a teeth
whitener to eliminate pla$ue. #t is also the basic constituent in o%erthecounter antinausea medications
which contains high le%els of fructose and glucose.
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Uses of Phosphoric Acid
3/3
'tating the industrial uses,phosphoric acidis also used as an external standard for phosphorus35
nuclear magnetic resonance !6*-". #n the industrial area it is re$uired for the process used for
separating mixtures due to differences in absorbency that is chromatography. #t is useful in making
phosphoric acid fuel cells, where in it is used as the electrolyte. #f one puts two to three drops of
phosphoric acid in a gallon of distilled water, it acts as electrolyte in oxyhydrogen generators.
/opper electro polishing is done by using phosphoric acid as an electrolyte. (lso this form of
phosphoric acid as an electrolyte is used for circuit board planari7ation and for filing rough edges on
work piece. +hile carrying out the +entworth Process for acti%ated carbon production, phosphoric
acid is used as oxidi7ing agent.
#t is a wet etching agent and hence is commonly used to make impressions on surface. To etch silicon
nitride hot phosphoric acid is used in micro fabrication. 0ue to its defined properties phosphoric acid is
also used by construction traders as a cleanser to remo%e mineral deposits on the sites. #t can be used
for remo%ing hard water stains as well. #t is also used as an aid to soldering in for example in model rail
roaders. Phosphoric acid should be stored in a tight container and the area around should be cool, dryand well %entilated.
Hence phosphoric acid is a chemicalha%ing abundant uses in industrial applications.
Chemical: PHOSPHORIC ACID
CAS Number: 7664-38-2
Which Industries Use This Chemical? How is the Chemical Used in This Industry?
Electroplating Acid Metal Cleaner - O!ide Re"o#er
Integrated Iron and Steel M$g Pic%ling Acid
&a'orator( C)e"ical Acid
Mac)iner( M$g and Repair Clean *a) agent
pH Reg+lation Agent pH Ad,+tor $or ater .reat"ent
Printed Circ+it /oard Man+$act+ring Ma%ing PC/ Hole Cond+cti#e
Printed Circ+it /oard Man+$act+ring O+ter &a(er Etc)0Plate - Print Circ /rd M$g
Se"icond+ctor et C)e"ical Etc)ing
elding and Soldering Agent Corroi#e 1l+! Ingredient
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