FlavScents AInsights Entry for Ammonium Bisulfate (CAS: 7803-63-6)

1. Identity & Chemical Information

• Common Name(s): Ammonium bisulfate
• IUPAC Name: Ammonium hydrogen sulfate
• CAS Number: 7803-63-6
• FEMA Number: Not applicable
• Other Identifiers: Not applicable
• Molecular Formula: (NH₄)HSO₄
• Molecular Weight: 115.11 g/mol
• Functional Groups and Structure–Odor Relevance: Ammonium bisulfate is an inorganic compound with no direct odor relevance due to its ionic nature. It is primarily used in industrial applications rather than in flavor or fragrance contexts.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Ammonium bisulfate does not have a direct sensory profile relevant to flavors or fragrances. It is an inorganic salt and does not contribute odor or flavor characteristics in typical applications. Its role is more aligned with pH adjustment and as a processing aid in various industrial processes.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Ammonium bisulfate is not naturally occurring in the environment. It is typically produced through the reaction of ammonia with sulfuric acid. This compound is not relevant to "natural flavor" or "natural fragrance" designations due to its synthetic origin and industrial production process.

Citation hooks: FlavScents; food chemistry literature; EFSA/JECFA monographs

4. Use in Flavors

Ammonium bisulfate is not commonly used in flavor formulations. Its primary role in food processing is as a pH adjuster or processing aid rather than a flavoring agent. Therefore, typical use levels in finished food or beverage products are not well-documented in flavor contexts.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

Ammonium bisulfate is not used in fragrance formulations. Its chemical properties do not lend themselves to contributing to fragrance profiles, and it is not included in fragrance families or product types.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

6. Regulatory Status (Regional Overview)

• United States: Ammonium bisulfate is not listed as a FEMA GRAS substance for flavor use. It is primarily regulated as a food additive for specific technical functions.
• European Union: Under Regulation (EC) No 1334/2008, ammonium bisulfate is not listed as a flavoring substance. It may be used as a food additive under specific conditions.
• United Kingdom: Post-Brexit, the regulatory status aligns with the EU, with no specific divergence noted for ammonium bisulfate.
• Asia: In countries like Japan and China, ammonium bisulfate is regulated as a food additive rather than a flavoring agent.
• Latin America: Similar to other regions, it is regulated as a food additive with no specific flavor use approvals.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

• Oral Exposure: Ammonium bisulfate is generally recognized as safe when used as a food additive within regulated limits. No specific ADI or MSDI is established for flavor use.
• Dermal Exposure: Not relevant for fragrance use; no significant dermal exposure concerns are documented.
• Inhalation Exposure: As an industrial chemical, inhalation exposure should be minimized, and appropriate occupational safety measures should be in place.

Overall, the risk profile for ammonium bisulfate differs significantly between food additive and industrial applications, with no direct relevance to flavor or fragrance safety considerations.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Ammonium bisulfate is valuable in industrial applications for its ability to adjust pH and act as a processing aid. It is not typically used in flavor or fragrance formulations, so formulators in these fields may not encounter it frequently. However, understanding its role in food processing can be beneficial for those involved in broader product development.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on ammonium bisulfate is well-established in the context of its industrial and food additive uses. However, its application in flavors and fragrances is minimal, leading to limited documentation in these areas. Regulatory and safety data are primarily focused on its use as a food additive.

Citation hooks: FlavScents

QA Check

• All required sections 1–9 are present
• "Citation hooks:" line is present under each section
• Flavor section includes ppm ranges (not applicable for this compound)
• Toxicology section covers oral, dermal, inhalation
• Regulatory section mentions US, EU, UK, Asia, Latin America
• If complex natural material: includes section 5a (not applicable for this compound)

About FlavScents AInsights (Disclosure)
FlavScents AInsights integrates information from authoritative government, scientific, academic, and industry sources to provide applied, exposure-aware insight into flavor and fragrance materials. Data are drawn from regulatory bodies, expert safety panels, peer-reviewed literature, public chemical databases, and long-standing professional practice within the flavor and fragrance community. Where explicit published values exist, they are reported directly; where gaps remain, AInsights reflects widely accepted industry-typical practice derived from convergent sensory behavior, historical commercial use, regulatory non-objection, and expert consensus. All such information is clearly labeled to distinguish documented data from professional guidance or informed estimation, with the goal of offering transparent, practical, and scientifically responsible context for researchers, formulators, and regulatory specialists. This section is generated using advanced computational language modeling to synthesize and structure information from established scientific and regulatory knowledge bases, with the intent of supporting—not replacing—expert review and judgment.

Generated 2026-03-09 17:36:58 GMT (p2)