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Side Effects of Phosphoric acid

03/04/2016 admin

Phosphoric acid, also called orthophosphoric acid, (H3PO4), is the most important oxygen acid of phosphorus. It is a clear colorless solid or syrupy liquid. Phosphoric acid is deliberately added to soft drinks to give them a sharper flavor. Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas and jams. It provides a tangy or sour taste. Various salts of phosphoric acid, such as monocalcium phosphate, are used as leavening agents.


General Side Effects

Main Routes of Exposure: Skin contact. Eye contact.

Inhalation: Not expected to be an inhalation hazard unless heated or misted. Can irritate the nose and throat.

Skin Contact: CORROSIVE. Contact can cause pain, redness, burns, and blistering. Permanent scarring can result. A severe exposure can cause death.

Eye Contact: CORROSIVE. Contact causes severe burns with redness, swelling, pain and blurred vision. Permanent damage including blindness can result.

Ingestion: Can burn the lips, tongue, throat and stomach. Symptoms may include nausea, vomiting, stomach cramps and diarrhea. Permanent damage can result.

Effects of Long-Term (Chronic) Exposure: At low concentrations: Can cause dry, red, cracked skin (dermatitis) following skin contact.

Carcinogenicity: Not known to cause cancer.


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Official Suggested Dosage

ADI: None (Acceptable Daily Intake)

MTDI: 70 mg/kg bw (as P) (Maximum Tolerable Daily Intake)

Data Source: JECFA Database of WHO


Phosphoric Acid is widely known as safe, there is no limit on dosage of intake. There is no proof showing that acquiring Phosphoric Acid will do any harm to special groups, including newborns, children, pregnant, and other applicable vulnerable groups. It should be safe to use Phosphoric Acid in food and beverages as a food additive without any side effects. However, we still recommend consumers to consult food ingredient experts before using large quantity of Phosphoric Acid for long period of time. There may be some side effects in large dosage.


GRAS (Generally Recognized as Safe) Substances

Yes. Phosphoric Acid is on FDA’s GRAS exemption list, it’s widely accepted and used as a safe food ingredient in many countries.


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