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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Is HCl certificate-of-analysis lacking?
Hi
I have recently found a new job in galvanizing industry as a Quality Assurance, which is a new environment for me. My question is on the certificate of analysis from our supplier; it only shows the strength of hydrochloric acid but the is no specific gravity/density. Is it normal or I should insist for the inclusion of SG in the certificate.
Quality Assurance - South Africa
March 10, 2011
I would say it is normal for the C of A to just give you the concentration, but some manufacturers might also include the specific gravity. If you need to know the specific gravity, you can always look it up in a chemical reference like CRC or Perry's where they will have a table that lists the specific gravity at various concentrations of HCl.
Jon Barrows, MSF, EHSSC
GOAD Company
Independence, Missouri
March 11, 2011
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