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NITRIC ACID

Nitric Acid 58% and 70-72%

The chemical compound nitric acid (HNO3), otherwise known as aqua fortis or spirit of nitre, is a colorless, corrosive liquid, a toxic acid which can cause severe burns. If the solution contains more than 70% and 86% nitric acid, it is referred to as fuming nitric acid, and can be separated into two kinds of fuming acids, white fuming nitric acid and red fuming nitric acid.

Now we are regularly having the following specification:-

HNO3 Concentration 61.5 +- 0.5% by wt. min., 68%, 72%
Nitrous Oxide as HNO2 500 ppm max.
Chloride as Cl 10 ppm max.
Sulphate as H2SO4 50 ppm max.
Arsenic as As 2 ppm max.
Residue as Ignition 100 ppm max.
Heavy Metal as Pb To pass the test
Specific Gravity 1.368 ar 25 deg C
Flash Point (-) 19 deg C

Chemical identity : Nitric Acid & In organic Acid

Chemical Classification : HNO3
CAS Number UN Number : 7697-37-2/2031
Shipping Name : Nitric Acid
Class/Label : Corrosive, oxidizer
Class 8
Hazardous Waste ID No : 16
Hazchem code : 2 PE

PHYSICAL /CHEMICAL DATA

Boiling Point/Range : 119 Deg C
Melting/Freezing point : -21 Deg C
Physical State : Water Liquid
Solubility Gravity : Solvable
PH : Acidic
Appearance : Colorless to yellowish brown
Odour : Chocking Odour

FIRE/EXPOSION HAZARD DATA

Flammability : No
LEL/UEL : Not pertinent
Auto ignition Temperature : Not pertinent
Explosion Sensitivity to Static : Not pertinent
Electricity : Stable
Hazardous Combustion Products : Stable
Oxides of : May emit poisonous Nitrogen and Acid
fumes.
Oxidizer : Yes
Corrosive Material : Yes
Combustible/Flammable Explosive Matls : No

HEALTH HAZARDS / FIRST AID MEASURES

Seek medical help immediately in case of ingestion/inhalation contact with skin. In the meanwhile following actions are recommended.

Inhalation : Remove the victim to fresh air area. Provide artificial
respiration if required

Ingestion : Give large quantities of water. Do not induce vomiting
Contact with Skin : Flush the effected are with plenty of water for long time

PREVENTIVE MEASURES

Avoid contact with liquid or vapors. Provide air mask, rubber acid suit, hood, boots,
gloves, safety goggles, face shield to the workmen, water shower and eye wash basin
should be provided near the work place

SPILLS

Dilute with water and neutralize with alkali

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