Comparing E222 - Sodium bisulphite vs E392 - Extracts of rosemary

Synonyms
E222
Sodium bisulphite
Sodium bisulfite
E392
Extracts of rosemary
rosemary extract
Products

Found in 1,804 products

Found in 3,436 products

Search rank & volume
#2024K / mo🇺🇸U.S.
#2661.4K / mo🇺🇸U.S.
Awareness score

×0.33
under-aware

×0.06
under-aware

Search volume over time

Interest over time for 3 keywords in U.S. during the last 10 years.

Interest over time for 3 keywords in U.S. during the last 10 years.

Popular questions
  1. Is sodium bisulfite bad for you?

    At approved food-use levels, sodium bisulfite (E222) is considered safe; regulators set a group ADI of 0–0.7 mg/kg body weight expressed as SO2. However, sulfite‑sensitive people—especially some asthmatics—may experience reactions like wheezing, hives, or headaches and should avoid it.

  2. What is sodium bisulfite used for?

    It’s an antioxidant and preservative that prevents browning and oxidation and helps control microbes, commonly used in products like wines, dried fruits, shrimp, and cut potatoes.

  3. What is sodium bisulfite in food?

    It’s a sulfiting agent (E222) that releases sulfur dioxide to protect color and flavor and extend shelf life; it must be declared on labels when present above about 10 ppm (as SO2).

  4. How much sodium bisulfite to neutralize chlorine?

    Approximately 1.5 mg of sodium bisulfite (NaHSO3) is needed per 1 mg of free chlorine (as Cl2) per liter, stoichiometrically. In practice use a slight excess and confirm with a chlorine test; the reaction releases heat and SO2, so handle carefully.

  5. Is sodium bisulfite gluten free?

    Yes—sodium bisulfite is a synthetic mineral salt and contains no gluten; any gluten risk would come from other ingredients, not the additive itself.

  1. Can dogs have rosemary extract?

    Yes—small amounts of rosemary extract (E392) used as a food preservative are generally safe for dogs; avoid giving concentrated essential oils and stop if stomach upset occurs.

  2. Can dogs eat rosemary extract?

    It’s commonly used in dog foods as a natural antioxidant and is considered safe at low levels, but consult your vet if your dog is prone to seizures or is pregnant/lactating.

  3. Can cats have rosemary extract?

    In the tiny amounts used as a preservative, rosemary extract is generally considered safe for cats; do not use rosemary essential oil, as cats are very sensitive to concentrated oils.

  4. How to extract rosemary oil?

    Rosemary essential oil is typically obtained by steam distillation of the herb, producing a highly concentrated oil that is not the same as E392 and isn’t intended for ingestion without expert guidance.

  5. How to make rosemary extract?

    Commercial E392 is made by extracting rosemary with food‑grade solvents (e.g., ethanol), then purifying and standardizing carnosic acid/carnosol levels; at home you can approximate it by steeping dried rosemary in high‑proof food‑grade alcohol and filtering, though it won’t be standardized.