How to Fill Out FDA Form 3503 (w/Examples) + FAQs

FDA Form 3503 is the official cover form used to submit Food Additive Petitions (FAP), Color Additive Petitions (CAP), Food Master Files (FMF), and Color Master Files (CMF) to the Food and Drug Administration. Under Section 409 of the Federal Food, Drug, and Cosmetic Act, any substance intentionally added to food is considered a food additive and is deemed unsafe unless it conforms to an FDA-issued regulation or meets a specific exemption. This means failing to properly complete and submit Form 3503 can result in your product being classified as adulterated and prohibited from entering U.S. commerce.

According to the FDA, the average time to approve a direct food additive petition takes 24 months—though many petitions extend far beyond this due to incomplete submissions and deficiencies that stop the review clock.

In this article, you will learn:

📋 How to navigate each part of FDA Form 3503, including specific field requirements and proper formatting

🔬 The difference between direct, secondary direct, and indirect food additives—and how your classification affects what you submit

💰 Color additive petition fees ranging from $1,600 to $3,000 and how to avoid forfeiting your deposit

⚠️ Critical mistakes that cause petitions to be refused for filing—and how to prevent costly delays

✅ Step-by-step examples for completing Form 3503 for manufacturers, importers, and food ingredient suppliers

What Is FDA Form 3503 and Who Needs to File It?

FDA Form 3503 serves as the standardized cover document for regulatory submissions to the Office of Food Additive Safety (OFAS) within FDA’s Center for Food Safety and Applied Nutrition (CFSAN). This form organizes your submission and helps FDA reviewers quickly identify key information about your petition or master file.

You need to file Form 3503 if you are:

• Requesting FDA approval for a new food additive not currently listed in 21 CFR Parts 172-179
• Seeking to amend an existing food additive regulation to allow new uses or higher use levels
• Submitting a color additive petition for use in food, drugs, cosmetics, or medical devices
• Creating a Food Master File or Color Master File to support petitions by referenced information

The form does not substitute for the actual petition content required under 21 CFR 171.1 for food additive petitions or 21 CFR 71.1 for color additive petitions. Completing Form 3503 alone does not create a complete submission—you must also include all attachments listed in Part VI of the form.

Form 3503 vs. Form 3537: Understanding the Difference

Many people confuse FDA Form 3503 with FDA Form 3537. These are entirely different forms serving separate regulatory purposes.

Form 3537 is required for facility registration under the Bioterrorism Act and FSMA. Form 3503 is required when you want FDA to approve a new substance or authorize new uses for an existing substance in food.

Breaking Down Form 3503: Part-by-Part Instructions

FDA Form 3503 contains eight parts. Each part collects specific information that FDA needs to process your submission. Below is a detailed explanation of each section with practical guidance on completing it correctly.

Part I: Introductory Information About the Submission

Part I establishes the type of submission you are making and provides essential tracking information.

Item 1 – Type of Submission

Select whether your submission is:

• A new Food Additive Petition (FAP)
• A new Color Additive Petition (CAP)
• A new Food Master File (FMF)
• A new Color Master File (CMF)
• An amendment to a previous submission
• An update to a previous submission

For amendments and updates, you must provide the existing petition or file number (e.g., FAP 4A4839 or CAP 3C0325).

Item 2 – Virus Check Verification

For electronic submissions, check the box confirming all files have been scanned and are free of computer viruses. FDA will reject submissions containing malware.

Item 3a – Pre-Submission Consultation Date

Enter the date of your most recent consultation with FDA on this substance, if applicable. Pre-petition consultations are not required but are strongly recommended. FDA encourages early consultation to:

• Verify your substance requires a petition rather than GRAS notification
• Discuss research protocols before conducting expensive studies
• Address uncertainties about data interpretation

Item 3b – Amendment Response Date

If your amendment responds to FDA correspondence, enter the date of that communication. This helps FDA track your submission in the review process.

Part II: Information About the Petitioner or Person Responsible

Part II identifies the parties involved in the submission.

Section 1a – Petitioner Information

Provide complete contact information for the person or entity legally responsible for the petition:

• Name of contact person
• Position/title
• Company name (if applicable)
• Full mailing address including country
• Telephone number
• Fax number (optional)
• Email address

Section 1b – Agent or Attorney (if applicable)

If you have authorized an agent or attorney to act on your behalf, provide their contact information here. If the agent is the preferred contact, write “See agent or attorney” in Section 1a’s contact person field.

Part III: General Administrative Information

Part III contains administrative details about your submission format and confidentiality claims.

Item 1 – Title of Submission

Create a clear, descriptive title for your petition. Example: “Food Additive Petition for the Safe Use of [Substance Name] as an Emulsifier in Baked Goods”

Item 2 – Submission Format

Select one:

• Electronic Submission Gateway (ESG)
• Paper
• Electronic files on physical media with paper signature page

For electronic submissions on physical media, specify the number and type of media (e.g., “2 DVDs”).

Item 3 – Paper Submission Details

For paper submissions only, enter:

• Number of volumes
• Total number of pages

Item 4 – Incorporation by Reference

Indicate whether your submission refers to information already in FDA’s files. If yes, proceed to Item 5 to identify the referenced materials.

Item 5 – Referenced Submissions

Check all applicable boxes and provide identification numbers for:

• Previous Food Additive Petition (FAP)
• Food Master File (FMF)
• Color Additive Petition (CAP)
• Color Master File (CMF)
• GRAS Notice (GRN)
• GRAS Affirmation Petition (GRP)
• Other materials

Item 6 – Confidential Information Designation

Under 21 CFR Part 20, you may designate certain information as trade secret or confidential commercial/financial information. Select one:

• Yes, see attached designation of confidential information
• Yes, information is designated at the place where it occurs
• No

Item 7 – Redacted Copy

Indicate whether you have attached a redacted copy (with confidential information removed):

• Yes, redacted copy of complete submission
• Yes, redacted copy of part(s) of submission
• No

Part IV: Specific Information (Varies by Submission Type)

Part IV contains three sub-sections—only complete the section applicable to your submission type.

Part IV.A – Food Additive Petition Only

Item 1 – Additive Type:

Select the category that describes your food additive:

Item 2 – Use in Meat/Poultry Products:

Indicate whether the intended use includes meat, meat food products, or poultry products. If “Yes,” FDA will coordinate review with USDA’s Food Safety and Inspection Service (FSIS).

Statement Requirement:

You must complete the required statement: “The undersigned submits the attached petition pursuant to section 409(b)(1) of the Federal Food, Drug, and Cosmetic Act with respect to [name of food additive and proposed use]”

Part IV.B – Color Additive Petition Only

Item 1 – Regulated Products:

Check all products that would contain your color additive:

• Food (including meat, meat food product or poultry product)
• Food (excluding meat, meat food product or poultry product)
• Food-contact material
• Cosmetics
• Drugs
• Medical devices

Item 2 – Fee Enclosed:

Color additive petitions require payment of fees under 21 CFR 70.19:

Important: If your petition is withdrawn before filing, you receive a refund minus $600 for administrative review. If withdrawn within 30 days after filing, deductions increase to $1,600-$1,800 depending on petition type.

Part IV.C – Food Master File or Color Master File Only

Explain the reason for your master file submission and provide any additional information not addressed elsewhere on the form.

Part V: Identity Information

Part V captures chemical identity details about your substance.

Complete the table with:

• Chemical Type: Mark as “P” (Primary) or “C” (Constituent)
• CAS Registry Number: The unique identifier from Chemical Abstracts Service
• Chemical Name: IUPAC or common chemical name
• Link to Chemical Structure: Reference to attached structure diagrams
• Trade Name: Commercial names, if any

Note: Include residual monomers, residual solvents, impurities (including any carcinogenic impurities), and catalysts.

If your substance does not have a CAS number, you may need to request one from CAS before submitting.

Part VI: Other Elements in Your Submission

Part VI is a comprehensive checklist ensuring your submission is complete. Check all elements you have included:

Administrative Elements:

• Designation of Nondisclosable Information
• Redacted Document
• Incoming Correspondence (amendments/updates only)
• Proposed Regulation
• Proposed Tolerance
• Exempt from Certification (color additives only)

Chemistry Information:

• Identity
• Use and Technical Effect
• Labeling
• Manufacturing Method
• Residues
• Specifications
• Exposure Estimates
• Stability Studies
• Intended Effect Studies
• Migration Studies
• Analytical Methods
• References

Safety Information:

• Toxicology Narrative
• Genetic Toxicity Tests
• Short-Term Toxicity Studies (Rodents/Non-Rodents)
• Subchronic Toxicity Studies (Rodents/Non-Rodents)
• One-Year Toxicity Studies (Non-Rodents)
• Chronic Toxicity Studies (Rodents)
• Carcinogenicity Studies
• Reproduction Studies
• Developmental Toxicity Studies
• Immunotoxicity Studies
• Metabolism and Pharmacokinetic Studies
• Neurotoxicity Studies
• Human Studies
• Dermal/Ocular Studies

Environmental Information:

• Environmental Assessment
• Claim of Categorical Exclusion
• Confidential Environmental Information

Part VII: Signature

Print or type the name and title of the responsible official, agent, or attorney signing the submission. Provide a handwritten signature and date.

For electronic submissions through COSM, you will download a PDF, digitally sign it, and re-upload before sending to FDA.

Part VIII: List of Attachments

List all documents attached to your Form 3503. For each attachment, provide:

• Name of attachment (use descriptive file names)
• Page numbers (for paper submissions)
• Element number/folder location (referencing Part VI categories)

How to Submit Form 3503: Three Methods

FDA accepts Form 3503 through three submission pathways:

Method 1: CFSAN Online Submission Module (COSM)

COSM is FDA’s preferred method for electronic submissions to OFAS. Since November 2023, COSM allows fully electronic submissions without using the separate Electronic Submission Gateway.

COSM Submission Steps:

1. Register at https://cfsan-onlinesubmissions.fda.gov
2. Select “Food Additive Petition (FAP)” or “Color Additive Petition (CAP)”
3. Complete all required questions
4. Upload supporting documents
5. Download the generated PDF
6. Digitally sign the PDF
7. Re-upload the signed PDF
8. Click “Send to FDA”

Method 2: Electronic Submission Gateway (ESG)

Organizations may still use FDA’s ESG NextGen platform for system-to-system submissions. This option requires:

• Digital certificate acquisition
• Test account setup (allow 2 months before first submission)
• Successful test submissions before going live

Method 3: Paper/Physical Media

Mail paper submissions or physical media (CD/DVD) to:

Office of Food Additive Safety (HFS-200)
Center for Food Safety and Applied Nutrition
Food and Drug Administration
5001 Campus Drive
College Park, MD 20740-3835

Real-World Examples: Completing Form 3503

Scenario 1: New Direct Food Additive for Beverages

Situation: A food ingredient manufacturer wants FDA approval for a new sweetener for use in carbonated beverages.

Scenario 2: Color Additive Amendment for Expanded Food Uses

Situation: A company wants to expand the permitted use of an existing approved color additive to include confectionery products.

Scenario 3: Food Master File for Proprietary Manufacturing Process

Situation: A supplier wants to create a master file that food additive petitioners can reference, without disclosing proprietary manufacturing details.

Common Mistakes to Avoid

Filing deficiencies can stop the FDA review clock and add months to your approval timeline. Avoid these critical errors:

1. Incomplete Identity Information

Error: Submitting without CAS Registry Numbers or using incorrect chemical nomenclature.

Consequence: FDA cannot verify substance identity, resulting in information requests and filing delays.

Solution: Obtain CAS numbers before submission. Verify chemical names against FDA databases and IUPAC standards.

2. Missing Environmental Documentation

Error: Failing to include either an Environmental Assessment (EA) or Claim of Categorical Exclusion.

Consequence: FDA will refuse to file your petition under 21 CFR 25.15.

Solution: Determine if your submission qualifies for categorical exclusion under 21 CFR 25.30 or 25.32. If not, prepare a full Environmental Assessment.

3. Incorrect Fee Payment for Color Additive Petitions

Error: Sending wrong fee amount or incorrect payment method.

Consequence: Processing delays; potential return of petition.

Solution: Verify current fees under 21 CFR 70.19. Pay by money order, bank draft, or certified check drawn to “Food and Drug Administration”.

4. Failing to Request Pre-Petition Consultation

Error: Submitting complex petitions without prior FDA engagement.

Consequence: Preventable deficiencies that could have been identified and corrected before submission.

Solution: Contact OFAS at [email protected] or (240) 402-1200 before preparing your submission.

5. Inadequate Toxicology Studies

Error: Using study protocols that deviate from FDA guidance without justification.

Consequence: Studies may be deemed insufficient, requiring new research and extending review by years.

Solution: Consult FDA’s Redbook 2000 guidance and submit study protocols for FDA review before conducting studies.

Do’s and Don’ts for FDA Form 3503

Do’s ✅

Don’ts ❌

Food Additive Petition vs. GRAS Determination

Before filing Form 3503, determine whether your substance qualifies for the Generally Recognized as Safe (GRAS) pathway instead.

A GRAS determination requires that the basis for safety be publicly available information that qualified experts can evaluate independently. If your safety data is proprietary or not publicly accessible, the food additive petition route is typically necessary.

Understanding the FDA Review Process

Once you submit Form 3503 with your complete petition, FDA follows this general process:

1. Receipt and Initial Review – FDA checks for completeness
2. Filing Decision – Within 30 days, FDA publishes notice if petition is adequately filed, or notifies petitioner of deficiencies
3. Scientific Review – Chemistry, toxicology, and environmental evaluations conducted by FDA experts
4. Consumer Safety Officer Assignment – Your CSO is your primary FDA contact throughout review
5. Information Requests – FDA may ask for clarifications or additional data (review clock stops)
6. Safety Evaluation – FDA determines whether the proposed use is safe
7. Proposed Rule – FDA publishes proposed regulation in Federal Register for public comment
8. Final Rule – After considering comments, FDA publishes final regulation

The statutory deadline is 180 days, but the clock stops whenever FDA sends questions or requests additional information. Complex petitions routinely take 2-3 years or longer.

FAQs

Can I submit Form 3503 electronically?

Yes. FDA accepts electronic submissions through the CFSAN Online Submission Module (COSM) or the Electronic Submission Gateway (ESG). COSM is now the preferred method.

Do food additive petitions require fees?

No. Only color additive petitions require fees under 21 CFR 70.19. Fees range from $1,600 to $3,000 depending on intended use and whether the submission is a new petition or amendment.

Can trade secrets be protected in a food additive petition?

Yes. Under 21 CFR Part 20 and 171.1(h), trade secret and confidential commercial information may be protected from public disclosure. However, safety and functionality data are generally available to the public.

Is a pre-petition consultation with FDA required?

No. Pre-petition consultations are voluntary but highly recommended. FDA encourages early engagement to identify potential issues before significant resources are invested.

What happens if my petition has deficiencies?

The review clock stops. FDA will notify you of deficiencies. You must address all issues before FDA resumes review. Multiple rounds of deficiencies can add years to approval.

Can foreign manufacturers file food additive petitions?

Yes. Foreign entities may file petitions directly or through U.S.-based agents or attorneys. Contact information for the responsible person and any U.S. agent must be provided in Part II.

What is the difference between an amendment and an update?

Amendments respond to FDA communications or request changes requiring FDA evaluation. Updates provide routine information changes not requiring scientific review. Check the appropriate box in Part I.

Do I need an Environmental Assessment for every petition?

Not always. If your action qualifies under 21 CFR 25.30 or 25.32, you may submit a Claim of Categorical Exclusion instead. However, you must submit one or the other—petitions without environmental documentation will be refused.

How long does FDA have to act on my petition?

180 days by statute. However, this clock stops whenever FDA requests information and you are preparing a response. Average actual review time for direct food additives is 24 months.

Can I withdraw my petition and resubmit later?

Yes. For color additive petitions, withdrawals before filing result in refund of deposit minus $600. Resubmissions within 6 months require reduced fees; resubmissions after 6 months require full fees.