Sulfuric Acid is a strong acid in terms of chemical ionization and solutions of it can be assayed using a strong base, such as Sodium Hydroxide or Potassium Hydroxide. The endpoint can be determined potentiometrically or by using a pH indicator. The selection of the indicator used depends on the initial concentration of the Sulfuric Acid and the strength of the alkali used. This is due to the fact that the Normalities of the acid and the base affect the shape of the neutralization curve that results during the titration.The sulphuric acid manufactured by us has unique features.  It has a bright yellow colour and is of Russian Grade/ gost 127. 1-93. Its refinery speciation is as follows.Purified sulphuric acid manufactured by various filteration process with unique features. 

Appearance and Odor:      Odorless, clear to amber, heavy, oily liquid. A pungent odor may exist if certain  impurities are present in the acid.                                                                                                                          
Purified sulphuric acid manufactured by various filteration process by unique features.

Molecular Weight:                  98.08

Minimum Assay (acidimetric) 98.0%

Odor Threshold:                     Not applicable

Boiling Point:                          78%: 193°C (380°F)

                                               93%: 276°C (529°F)

                                               98%:330°C (626°F)

Melting/Freezing Point:          78%: -11.2°C (+11.6°F) 

                                               93%: -29.5°C (-21.1°F)

                                               98%: -1.1°C (30°F)

Vapor Pressure at 40°C (102°F):      78%: 1.2 mmHg  

                                                          93%: 0.0016 mmHg 

                                                          98%: 0.002 mmHg

Specific Gravity at 15°C (60°F):        78%: 1.7059 

                                                          93%: 1.8354

                                                          98%: 1.8437

Vapor Density:                  (Air=1): 3.4

Evaporation Rate:            Not applicable

Solubility:                         Easily soluble in cold water (with liberation of much heat.)

                                         Soluble in ethyl alcohol.

 

Maximum Limits of Impurities
Non-volatile matter	0.002%
Chloride (Cl)	0.00002%
Nitrate (NO3)	0.00002%
Ammonium (NH4)	0.0002%
Arsenic (As)	0.000005%
Copper (Cu)	0.00001%
Iron (Fe)	0.0001%
Lead (Pb)	0.0001%
Selenium (Se)	0.001%
Substances reducing	–
Permanganate (O)	0.0001%

pH:                                  0.3 (1N solution at 25°C/78°F)