Description
Hydrochloric Acid 34% / Extra Pure Hydrochloric Acid 36% Hydrochloric Acid 33% Exporter from Mumbai , India
Hydrochloric acid is an important and widely used chemical. The largest end uses for hydrochloric acid are steel pickling, oil well acidizing, food manufacturing, producing calcium chloride, and ore processing.
Also used for catalyst regeneration, pH control, regeneration of ion exchange resins
Technical Bulletin
HYDROCHLORIC ACID
Product Code 25,814-8
Exact replacement for Product Code H 7020
CAS NUMBER: 7647-01-0
SYNONYMS: hydrogen chloride solution, muriatic acid
PHYSICAL DESCRIPTION:
Molecular formula: HCl
Molecular weight: 36.46
Hydrochloric acid is a clear colorless liquid which is a solution of hydrogen chloride gas dissolved in water. Reagent grade hydrochloric acid certified by the American Chemical Society (ACS) must assay between 36.5 and 38.0% HCl (titration) and meet ACS criteria regarding trace impurities.
Based on an approximate density of 1.2 g/mL, “concentrated HCl” is in the range 11.6-12.0 M (or N, for this monoprotic acid). Hydrochloric acid is chemically a strong acid; it is totally ionized in water with a Ka value . 4. Approximately 83 mL of concentrated HCl poured into sufficient water to make one-liter yields approximately 1.0 N HCl, the pH of which is . 0.10; the pH of a 0.01 N solution is . 2.02. Hydrochloric acid forms a constant boiling azeotrope with water at 108.6°C, giving a solution containing 20.2% HCl,
density 1.096.2.
Because hydrochloric acid is a gas dissolved in water, the concentrated acid fumes in air; the vapors are extremely corrosive and irritating. Consult the Material Safety Data Sheet for hazard information. Bottles should be well sealed; large bottles should be stored at floor level away from bases in a well-ventilated area.
| BOILING POINT | 51°C |
| VAPOR PRESSURE |
160 mm Hg @ 70°F |
| MELTING POINT | -114.3°C |
| VAPOR DENSITY | 1.27 |
| EVAPORATION RATE | Information not available |
| Appearance /Odors | Colorless fuming liquid |
| Flash Point | Information not available |
| Specific Gravity | 1.19 |
| Percent Volatile by | >99% |
| Evaporation Standard | |
| Auto Ignition Temp |
Not applicable |
| Lower Flamm. Limit in Air |
Not applicable |
| Upper Flamm. Limit in Air | Not applicable |
| Solubility in Water | Soluble |
STABILITY / STORAGE AS SUPPLIED:
The product is stable at room temperature if kept sealed and away from bases and metals. Solubility of HCl gas decreases somewhat with increased temperature. The solution may develop a yellowish color with time due to traces of iron, chlorine or organic matter.
SOLUBILITY / SOLUTION STABILITY:
This is an aqueous solution that can be diluted to any concentration in water, but since the dilution is exothermic, this product should be added carefully to the water.
REFERENCES:
1. Reagent Chemicals, 8th Ed., 370-373 (1993).
2. Merck Index, 12th Ed., #4821 (1996).
Label
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