Nitric Acid 68% manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai UAE, Muscat Oman, Kenya Africa. Get the best quality of Nitric Acid 68% at a competitive price from us. We have ready stock of Nitric Acid 68% in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.
Extra pure NITRIC , removes iron residue & forms an oxide layer that boosts the corrosion resistance of the stainless steel intended to improve the corrosion resistance of parts made from austenitic, ferritic and martensitic corrosion-resistant steels of the 200, 300 and 400 series and precipitation hardened corrosion-resistant steels.
High carbon, high chromium martensitic 440C grades which are selected for high hardness and resistance may be exempt from passivation treatments at the discretion of the procuring activity.
PRECAUTION :
1> Loose iron particles or other foreign particles must be removed or they will appear as rust or stain spots. may become smeared over or imbedded into the surface of corrosion-resistant steel parts.
2> DO avoid chlorides that, in excess, can cause a harmful flash attack. When possible, use only a good grade of water containing less than about 50 parts per million (ppm) of chlorides. Tap water is usually adequate, and in some cases up In several hundred ppm chlorides can be tolerated.
Chlorides: are present in many cleaning agents. This entails risk of pitting corrosion of stainless steel. If a cleaner containing chlorine, chlorides, bleaches orhypochlorites is used it must be afterwards promptly and thoroughly cleaned off.
Nitric Acid (68%) Safety Data Sheet
Chemical Identity
Chemical Name
Nitric Acid
Chemical Classification
Inorganic Acid
Formula
HNO3
CAS Number
7697-37-2
UN Number
2031
Shipping Name
Nitric Acid
Codes / Label
Corrosive, Oxidiser, Class 8
Hazardous waste ID No.
16
Hazchem Code
2 PE
Physical / Chemical Data
Boiling Point / Range
120 Deg. C
Melting / freezing Point
- 40 Deg. C
PhysicalState
Watery Liquid
Specific Gravity
1.40
Solubility in water
Soluble
PH
Acidic
Appearance
Colourless to Brown
Odour
Choking Odour
Fire / Explosion Hazard Data
Flammability
No
LEL / UEL
Not Pertinent
Flash Point
Not Pertinent
Autoignition Temperature
Not Pertinent
Explosion Sensitivity to Impact
Stable
Explosion Sensitivity to Static Electricity
Stable
Hazardous Combustion Products
May emit poisonous oxides of
Nitrogen and Acid fumes
Oxidiser
Yes
Corrosive Material
Yes
Combustible / Flammable / Explosive Material
No
Preventive Measures
Avoid contact with liquid or vapours. Provide air mask, rubber acid suit, hood, boots, gloves, safety goggles, face shield to the workmen. Water shower and eyewash basin should be provided near the workplace.
Spills
Dilute with water and neutralise with alkali.
During processing operations such as forming, machining, tumbling and lapping, iron particles or other foreign particles may become smeared over or imbedded into the surface of corrosion-resistant steel parts. These particles must be removed or they will appear as rust or stain spots.
High carbon, high chromium martensitic 440C grades which are selected for high hardness and resistance may be exempt from passivation treatments at the discretion of the procuring activity.
CAS NUMBER 7697-37-2
ITEM
:
NITRIC ACID ( HNO3 )
Molecular Weight
:
63.01
Composition
:
H 1.60 % NO398.40%
SPECIFICATION OF PRODUCT
HNO3CONTENT, WT.% MIN
:
62 - 68 %
MINIMUM FREEZING POINT
:
5.3OC
IDENTITY
:
BY IR Spectrum
APPEARANCE
:
CLEAR FUMING NITRIC ACID
NOTE : IT IS DECOMPOSED BY LIGHT OR ELEVATED TEMP., BECOMING RED IN COLOUR FROM NITROGEN DIOXIDE.
CARBONISABLE SUBSTANCES
:
PASSES THE TEST
COLOUR, MAX
:
10 HU
NON VOLATILE MATTER
:
0.001%
CHLORIDE CONTENT, PPM, MAX
:
0.1 ppm
ORGANIC IMPURITIES
:
Passes test
SULPHUR TOTAL AS SULPHATES, PPM, MAX
:
0.5 ppm
PHASE
:
LIQUID
Transparent, colourless or yellowish corrosive liquid. A strong oxidizing agent that will attack allmost all metals.
Hazard: Dangerous fire risk in contact with orgenic materials. Highly toxic by inhalation, corrosive to the skin and mucous membrance. Uses : Orgenc synthesis (dyes, drugs,explosives, cellulose nitrate, nitrate salts ), photoengraving, etching steel.
Passivation Treatments
• Grades with at least 16% chromium (except free machining grade such as 303):
20-50% nitric acid, at room temperature to 40oC for 30-60 minutes.
• Grades with less than 16% chromium (except free machining grades such as 416):
20-50% nitric acid, at room temperature to 40oC for 60 minutes.
• Free machining grades such as 303, 416 and 430F:
20-50% nitric acid + 2-6% sodium dichromate, at room temperature to 50oC for 25 40 minutes
Pickling Treatments
• All stainless steels (except free machining grades):
8-11% sulphuric acid, at 65 to 80oC for 5-45 minutes.
• Grades with at least 16% chromium (except free machining grades):
15-25% nitric acid + 1-8% hydrofluoric acid, at 20 to 60oC for 5-30 minutes.
• Free machining grades and grades with less than 16% chromium such as 303, 410 and 416: 10-15% nitric acid + 0.5-1.5% hydrofluoric acid, at 20 to 60oC for 5-30 minutes.
PROBLEMCLEARING AGENTCOMMENTS
Rust and other corrosion products. Embedded or adhering "free ironVery light rust stain can be removed by 10% nitric acid. More significant rust or embedded iron will require picking. See also previous sections on Passivating and Picking. Sand or glass-bead blasting is another optionWear PPE as appropriate. Afterwards rinse well with clean water. Mix in acid-proof container, and be very careful with the acid, (See Precautions for acid cleaners)
Routine cleaning of boat fittings.Frequent washing down with fresh water.Recommended after each time the boat is used in salt water.
Cooking pot boiled dry.Remove burnt food by soaking in hot water with detergent, baking soda or amonia.Afterwards clean and polish. with a mild abrasive if necessary. See comments re steel wool.
Dark oxide from welding or heat treatment."Picking Paste" or picking solutions given on previous page.Must be careful rinsed, and use care in handling (see Precautions for acid cleaners).
Scratches on polished (satin or brushed) finish.Slight scratches - use impregnated nylon pads. Polish with polishing wheel dressed with iron-free abrasive for deeper scratches. Follow polish lines. Then clean with soap or detergent as for routine cleaningDo not use ordinary steel wool - iron particles can become embedded in stainless steel and cause further surface problems. Stainless steel and "Scotchbrite" scouring pads are satisfactory.
PROBLEMCLEARING AGENTCOMMENTS
Rust and other corrosion products. Embedded or adhering "free ironVery light rust stain can be removed by 10% nitric acid. More significant rust or embedded iron will require picking. See also previous sections on Passivating and Picking. Sand or glass-bead blasting is another optionWear PPE as appropriate. Afterwards rinse well with clean water. Mix in acid-proof container, and be very careful with the acid, (See Precautions for acid cleaners)
Routine cleaning of boat fittings.Frequent washing down with fresh water.Recommended after each time the boat is used in salt water.
Cooking pot boiled dry.Remove burnt food by soaking in hot water with detergent, baking soda or amonia.Afterwards clean and polish. with a mild abrasive if necessary. See comments re steel wool.
Dark oxide from welding or heat treatment."Picking Paste" or picking solutions given on previous page.Must be careful rinsed, and use care in handling (see Precautions for acid cleaners).
Scratches on polished (satin or brushed) finish.Slight scratches - use impregnated nylon pads. Polish with polishing wheel dressed with iron-free abrasive for deeper scratches. Follow polish lines. Then clean with soap or detergent as for routine cleaningDo not use ordinary steel wool - iron particles can become embedded in stainless steel and cause further surface problems. Stainless steel and "Scotchbrite" scouring pads are satisfactory.
PROBLEMCLEARING AGENTCOMMENTS
Routine cleaning All finishesSoap mild detergent and water. (preferably warm)Sponge, rinse with clean water, wipe dry if necessary. Follow polish lines.
Fingerprints All finishesSoap warm water or organic solvent (eg acetone, alchol, methylated spirits)Rinse with clean water and pipe dry. Follow polish lines.
Stubborn stains and discoloration. All finishes.Mild cleaning solutions. Ensure any properietary cleaners state compatibility with stainless steel. Phpsphoric acid cleaners may also be effectiveUse rag, sponge or fibre brush (soft nylon or natural bristle. An old toothbrush can be useful). Rinse well with clean water and wipe dry. Follow polish lines.
Lime deposits from hard water.Solution of one part vinegar to three parts water.Soak in solution then brush to loosen. Rise well with clean water.
Oil or grease marks. All finishes.Organic solvents (eg. acetone, alchol, methylated spirits, proprietary "safety solvents"). Baked-on grease can be softened beforehand with ammoniaClean after with soap and water, rinse with clean water and dry. Follow polish lines
PROBLEMCLEARING AGENTCOMMENTS
Rust and other corrosion products. Embedded or adhering "free ironVery light rust stain can be removed by 10% nitric acid. More significant rust or embedded iron will require picking. See also previous sections on Passivating and Picking. Sand or glass-bead blasting is another optionWear PPE as appropriate. Afterwards rinse well with clean water. Mix in acid-proof container, and be very careful with the acid, (See Precautions for acid cleaners)
Routine cleaning of boat fittings.Frequent washing down with fresh water.Recommended after each time the boat is used in salt water.
Cooking pot boiled dry.Remove burnt food by soaking in hot water with detergent, baking soda or amonia.Afterwards clean and polish. with a mild abrasive if necessary. See comments re steel wool.
Dark oxide from welding or heat treatment."Picking Paste" or picking solutions given on previous page.Must be careful rinsed, and use care in handling (see Precautions for acid cleaners).
Scratches on polished (satin or brushed) finish.Slight scratches - use impregnated nylon pads. Polish with polishing wheel dressed with iron-free abrasive for deeper scratches. Follow polish lines. Then clean with soap or detergent as for routine cleaningDo not use ordinary steel wool - iron particles can become embedded in stainless steel and cause further surface problems. Stainless steel and "Scotchbrite" scouring pads are satisfactory.
PROBLEMCLEARING AGENTCOMMENTS
Routine cleaning All finishesSoap mild detergent and water. (preferably warm)Sponge, rinse with clean water, wipe dry if necessary. Follow polish lines.
Fingerprints All finishesSoap warm water or organic solvent (eg acetone, alchol, methylated spirits)Rinse with clean water and pipe dry. Follow polish lines.
Stubborn stains and discoloration. All finishes.Mild cleaning solutions. Ensure any properietary cleaners state compatibility with stainless steel. Phpsphoric acid cleaners may also be effectiveUse rag, sponge or fibre brush (soft nylon or natural bristle. An old toothbrush can be useful). Rinse well with clean water and wipe dry. Follow polish lines.
Lime deposits from hard water.Solution of one part vinegar to three parts water.Soak in solution then brush to loosen. Rise well with clean water.
Oil or grease marks. All finishes.Organic solvents (eg. acetone, alchol, methylated spirits, proprietary "safety solvents"). Baked-on grease can be softened beforehand with ammoniaClean after with soap and water, rinse with clean water and dry. Follow polish lines
PROBLEMCLEARING AGENTCOMMENTS
Rust and other corrosion products. Embedded or adhering "free ironVery light rust stain can be removed by 10% nitric acid. More significant rust or embedded iron will require picking. See also previous sections on Passivating and Picking. Sand or glass-bead blasting is another optionWear PPE as appropriate. Afterwards rinse well with clean water. Mix in acid-proof container, and be very careful with the acid, (See Precautions for acid cleaners)
Routine cleaning of boat fittings.Frequent washing down with fresh water.Recommended after each time the boat is used in salt water.
Cooking pot boiled dry.Remove burnt food by soaking in hot water with detergent, baking soda or amonia.Afterwards clean and polish. with a mild abrasive if necessary. See comments re steel wool.
Dark oxide from welding or heat treatment."Picking Paste" or picking solutions given on previous page.Must be careful rinsed, and use care in handling (see Precautions for acid cleaners).
Scratches on polished (satin or brushed) finish.Slight scratches - use impregnated nylon pads. Polish with polishing wheel dressed with iron-free abrasive for deeper scratches. Follow polish lines. Then clean with soap or detergent as for routine cleaningDo not use ordinary steel wool - iron particles can become embedded in stainless steel and cause further surface problems. Stainless steel and "Scotchbrite" scouring pads are satisfactory.
PROBLEMCLEARING AGENTCOMMENTS
Routine cleaning All finishesSoap mild detergent and water. (preferably warm)Sponge, rinse with clean water, wipe dry if necessary. Follow polish lines.
Fingerprints All finishesSoap warm water or organic solvent (eg acetone, alchol, methylated spirits)Rinse with clean water and pipe dry. Follow polish lines.
Stubborn stains and discoloration. All finishes.Mild cleaning solutions. Ensure any properietary cleaners state compatibility with stainless steel. Phpsphoric acid cleaners may also be effectiveUse rag, sponge or fibre brush (soft nylon or natural bristle. An old toothbrush can be useful). Rinse well with clean water and wipe dry. Follow polish lines.
Lime deposits from hard water.Solution of one part vinegar to three parts water.Soak in solution then brush to loosen. Rise well with clean water.
Oil or grease marks. All finishes.Organic solvents (eg. acetone, alchol, methylated spirits, proprietary "safety solvents"). Baked-on grease can be softened beforehand with ammoniaClean after with soap and water, rinse with clean water and dry. Follow polish lines
PROBLEMCLEARING AGENTCOMMENTS
Rust and other corrosion products. Embedded or adhering "free ironVery light rust stain can be removed by 10% nitric acid. More significant rust or embedded iron will require picking. See also previous sections on Passivating and Picking. Sand or glass-bead blasting is another optionWear PPE as appropriate. Afterwards rinse well with clean water. Mix in acid-proof container, and be very careful with the acid, (See Precautions for acid cleaners)
Routine cleaning of boat fittings.Frequent washing down with fresh water.Recommended after each time the boat is used in salt water.
Cooking pot boiled dry.Remove burnt food by soaking in hot water with detergent, baking soda or amonia.Afterwards clean and polish. with a mild abrasive if necessary. See comments re steel wool.
Dark oxide from welding or heat treatment."Picking Paste" or picking solutions given on previous page.Must be careful rinsed, and use care in handling (see Precautions for acid cleaners).
Scratches on polished (satin or brushed) finish.Slight scratches - use impregnated nylon pads. Polish with polishing wheel dressed with iron-free abrasive for deeper scratches. Follow polish lines. Then clean with soap or detergent as for routine cleaningDo not use ordinary steel wool - iron particles can become embedded in stainless steel and cause further surface problems. Stainless steel and "Scotchbrite" scouring pads are satisfactory.
PROBLEMCLEARING AGENTCOMMENTS
Routine cleaning All finishesSoap mild detergent and water. (preferably warm)Sponge, rinse with clean water, wipe dry if necessary. Follow polish lines.
Fingerprints All finishesSoap warm water or organic solvent (eg acetone, alchol, methylated spirits)Rinse with clean water and pipe dry. Follow polish lines.
Stubborn stains and discoloration. All finishes.Mild cleaning solutions. Ensure any properietary cleaners state compatibility with stainless steel. Phpsphoric acid cleaners may also be effectiveUse rag, sponge or fibre brush (soft nylon or natural bristle. An old toothbrush can be useful). Rinse well with clean water and wipe dry. Follow polish lines.
Lime deposits from hard water.Solution of one part vinegar to three parts water.Soak in solution then brush to loosen. Rise well with clean water.
Oil or grease marks. All finishes.Organic solvents (eg. acetone, alchol, methylated spirits, proprietary "safety solvents"). Baked-on grease can be softened beforehand with ammoniaClean after with soap and water, rinse with clean water and dry. Follow polish lines
Nitric Acid supplier in Mumbai, Kolkata, Chennai, Gandhidham, Fujairah - Dubai