Sodium Metabisulfite - Chemical Philippines

Uses

Food additive

It is used as a preservative and antioxidant in food and is also known as E223.^[3]

It may cause allergic reactions in those who are sensitive to sulfites, including respiratory reactions in asthmatics, anaphylaxis and other allergic reactions in sensitive individuals.^[4][5]

Sodium metabisulfite and potassium metabisulfite are the primary ingredients in Campden tablets, used for wine and beer making.^[6]

The acceptable daily intake is up to 0.7 mg per kg of body weight.^[7] Sodium metabisulfite has no side effects; it is oxidised in the liver to harmless sulfate and excreted in urine.^{[8][clarification needed]}

Sanitization and cleaning agent

It is commonly used in homebrewing and winemaking to sanitize equipment. It is used as a cleaning agent for potable water reverse osmosis membranes indesalination systems. It is also used to remove chloramine from drinking water after treatment.

Other uses

• Added to local anaesthetic(lidocaine etc) solutions to prevent oxidation of vasoconstrictor adrenaline and thus improve the shelflife of the solution
• It is used in photography.^[9]
• Concentrated sodium metabisulfite can be used to remove tree stumps. Some brands contain 98% sodium metabisulfite, and cause degradation of ligninin the stumps, facilitating removal.^[10]
• It is also used as an excipient in some tablets, such as paracetamol. Approximately 0.5 mg is used in epinephrine autoinjectors such as the EpiPen.
• A very important health related aspect of this substance is that it can be added to a blood smear in a test for sickle cell anaemia (and other similar forms of haemoglobin mutation). The substances causes defunct cells to sickle (through a complex polymerisation) hence confirming disease.
• It is also used to precipitate gold from auric acid (gold dissolved in aqua regia).

Contact Details;

Tel No.  632-369-9497