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Hydrochloric Acid is a strong acid in terms of chemical ionization, and solutions of it can be assayed...

Sulfosalicylic Acid

Sulfosalicylic Acid 2-Hydroxy-5-sulfobenzoic acid
Chemical Formula	HOC₆H₃(COOH)SO₃H·2H₂O
Formula Weight	254.22
Equivalent Weight	127.11 (Molar = 2 Normal)
CAS No.	5965-83-3

Sulfosalicylic Acid solutions can be assayed with standardized Sodium Hydroxide solutions using Phenolphthalein Indicator according to the following reaction:

HOC₆H₃(COOH)SO₃H + 2 NaOH → HOC₆H₃(COONa)SO₃Na + 2 H₂O

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