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Conversion of chloride content and sulphates into ppm

Conversion of chloride content and sulphates into ppm

Conversion of chloride content and sulphates into ppm

(OP)
Dear All,

Currently I am working on a submarine pipeline project, and a third party provided chemical tests for soil and water. For chloride content , Cl,  results are in percentage and for sulphates, SO3, in g/L.

1. How to transform those results into ppm? For percentage as far I understand 1ppm = 0.0001%, is this correct? For g/L, no idea.

2. Do you know any data or reference regarding corrosion or aggressiveness of chemicals of water and soil such as chloride, sulphate, pH, on steel?

Thank you in advance for your answers.

 

RE: Conversion of chloride content and sulphates into ppm

1 mg/L = 1 ppm, so 1 g/L = 1000 ppm

RE: Conversion of chloride content and sulphates into ppm

(OP)
Thank you Ron for your valuable contribution.

Do you have any data on item 2?

Best Regards

RE: Conversion of chloride content and sulphates into ppm

Sulphates are slow reactors for the most part, but do attack steel in contact with them in soluble form.  Sulphates will also attack concrete.

Chlorides do not attack concrete; however, they aggressively attack steel (rebar and embedments).

Low pH attacks steel; however, high pH such as in concrete, actually passivates and protects steel, as long as there is not a strong oxidizer (such as chloride) present.

There's plenty of info available on all these.  Do a Google search on chloride attack on steel, sulphate attack on steel, sulphate attack on concrete, pH and steel corrosion, chloride corrosion of steel, etc.  You'll get lots of info.

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