Tomservo

Claim: The acids in Coca-Cola make it harmful to drink.

Status: False.

Example: [Collected on the Internet, 2001]

Origins: Many of the entries above are just simple household tips involving Coca-Cola. That you can cook and clean with Coke is relatively meaningless from a safety standpoint — you can use a wide array of common household substances (including water) for the same purposes; that fact alone doesn't necessarily make them dangerous to ingest. Nearly all carbonated soft drinks contain carbonic acid, which is moderately useful for tasks such as removing stains and dissolving rust deposits (although plain soda water is much better for some of these purposes than Coca-Cola or other soft drinks, as it doesn't leave a sticky sugar residue behind). Carbonic acid is relatively weak, however, and people have been drinking carbonated water for many years with no detrimental effects.

The rest of the claims offered here are specious. Coca-Cola does contain small amounts of citric acid and phosphoric acid; however, all the insinuations about the dangers these acids might pose to people who drink Coca-Cola ignore a simple concept familiar to any first-year chemistry student: concentration. Coca-Cola contains less citric acid than orange juice does, and the concentration of phosphoric acid in Coke is far too small (a mere 11 to 13 grams per gallon of syrup, or about 0.20 to 0.30 per cent of the total formula) to dissolve a steak, a tooth, or a nail overnight. (Much of the item will dissolve eventually, but after a day or two you'll still have most of the tooth, a whole nail, and one very soggy t-bone.)

The next time you're stopped by a highway patrolman, try asking him if he's ever scrubbed blood stains off a highway with Coca-Cola (or anything else). If you're lucky, by the time he stops laughing he'll have forgotten about the citation he was going to give you.

Last updated: 20 November 2001