Hydrochloric Acid 20% ACS Grade

Certificate #: TYP-HYDROCHLORIC
Lot Number: TYPICAL SAMPLE
Test Date: 2026-06-02
Category: Aqueous Acids (C)
CAS Number: 7647-01-0
Formula: ClH
Computed Assay: 21.00%(100 − Σ impurities)

Sample COA. Lot-specific COAs ship with each order.

Specifications

Parameter	Specification	Typical Result	Test Method
Assay (Titration)	19.5 – 20.5 %	21 %	Titration
Aluminum (Al)	≤ 0.54 ppm	—	ICP-MS
Arsenic & Antimony (as As)	≤ 0.005 ppm	0 ppm	ICP-MS
Barium (Ba)	≤ 0.54 ppm	—	ICP-MS
Boron (B)	≤ 0.05 ppm	—	ICP-MS
Cadmium (Cd)	≤ 0.54 ppm	—	ICP-MS
Calcium (Ca)	≤ 0.54 ppm	—	ICP-MS
Free Halogen (as Cl2)	≤ 5 ppm	1.5 ppm	Titration
Chromium (Cr)	≤ 0.27 ppm	—	ICP-MS
Cobalt (Co)	≤ 0.05 ppm	—	ICP-MS
Color (APHA/Hazen)	≤ 20 APHA	5 APHA	Spectrophotometry
Copper (Cu)	≤ 0.05 ppm	—	ICP-MS
Density	—	—	ASTM D4052 / Hydrometer
Heavy Metals (as Pb)	≤ 1 ppm	—	ICP-MS (as Pb)
Iron (Fe)	≤ 2 ppm	1 ppm	ICP-MS
Lead (Pb)	≤ 0.5 ppm	0.15 ppm	ICP-MS
Magnesium (Mg)	≤ 0.54 ppm	—	ICP-MS
Manganese (Mn)	≤ 0.54 ppm	—	ICP-MS
Nickel (Ni)	≤ 0.05 ppm	—	ICP-MS
Non-volatile Residue	≤ 54 mg/100mL	—	Evaporation
Phosphate (PO4)	≤ 0.03 ppm	—	ICP
Potassium (K)	≤ 0.54 ppm	—	ICP-MS
Residue on Evaporation	≤ 5 ppm	3 ppm	Evaporation
Silicon (Si)	≤ 0.54 ppm	—	ICP-MS
Silver (Ag)	≤ 0.05 ppm	—	ICP-MS
Sodium (Na)	≤ 0.54 ppm	—	ICP-MS
Specific Gravity @20°C	1.093 – 1.103 g/mL	1.098 g/mL	Hydrometer @ 25°C
Strontium (Sr)	≤ 0.54 ppm	—	ICP-MS
Sulfate (SO4)	≤ 10.81 ppm	—	ICP
Sulfite (SO3)	≤ 37.84 ppm	—	ICP
Tin (Sn)	≤ 0.54 ppm	—	ICP-MS
Zinc (Zn)	≤ 0.54 ppm	—	ICP-MS

Generated 2026-06-02. Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.