Blue No 1
Blue No 1 appears in 11 indexed US food products. No FDA SAFFA status or CSPI rating is attached in this snapshot, so this page reports prevalence rather than a safety verdict.
What the data can answer
Blue No 1 appears in 11 catalogued products, but this snapshot has no FDA SAFFA status or CSPI Chemical Cuisine rating attached to it. This page therefore cannot answer whether the ingredient is safe from those sources. It can show how often it occurs, where it tends to sit on labels, and which kinds of products contain it.
- 11
- catalogued products
- #14,190
- usage rank of 247,206
- 9
- named brands represented
- 80%
- average depth down ingredient lists
Catalog prevalence comes from Open Food Facts ingredient lists. FDA SAFFA and CSPI Chemical Cuisine labels are shown only when the source record contains them.
What this page can and cannot answer
Audit the co-occurring flags first
63.6% of the linked products contain at least one separately flagged ingredient, making co-occurrence the dominant follow-up question. That figure does not identify Blue No 1 as the trigger. Open records such as Good Sense Foods; Gummi Butterflies; King Henry's, Sour Apple Rings, Fat Free and inspect which ingredient row carries the caution marker. The 90.5/100 product average is therefore a triage signal for this surrounding formulation set, not an ingredient verdict. Its 80% average label depth helps locate the term when checking the package.
63.6% of linked products contain a separately flagged ingredient
Processing is unusually concentrated here: Group 4 accounts for 11 of 11 NOVA-tagged records. That describes the surrounding products, not the substance. For a useful comparison, hold category and processing level constant, then inspect which named component changes alongside the caution flag; otherwise the product mix will confound the ingredient question.
Next check: open the lowest-scoring linked formulation and locate the exact caution-marked component.
Blue No 1: top-decile catalog footprint (#14,190 of 247,206)
- Usage rank
- #14,190
- of 247,206 ingredients that appear in at least one catalogued product, tied with 989 others that also appear in exactly 11 products.
- Typical depth in an ingredient list
- 80%
- Mean relative depth 80% across 11 parsed labels, slot 13.0 on average. Blue No 1 tends to sit near the end of the captured list. Depth is location on the label, not a measured dose.
Computed from parsed product ingredient lists (Open Food Facts). The ranking covers 247,206 ingredients that appear at least once. Neither usage rank nor label depth is a safety clearance.
How do the sampled products compare?
Each point is one of the 11 sampled products listed below: its overall safety score against how many separately flagged ingredients its label carries. Bubble size is the number of ingredient rows the label actually resolved to.
Safety score vs. flagged-ingredient count for products containing Blue No 1
Products Containing Blue No 1
High-volume slice (11 of 11) for products naming Blue No 1:
High-volume peers for Blue No 1
Blue No 1 sits among other busy catalog rows (11 products, mean score 90.5/100). Count peers and score peers are listed separately on purpose.
Similar mean product score
Nearest other ingredients by mean product screening score (floored at ≥50 scored products), distinct from the count row.
Next steps from the Blue No 1 page
11 product rows plus any FDA/CSPI fields on Blue No 1 are the evidence base — drill into the listings that matter for your decision.
- Review the sampled product records that list Blue No 1 to see how the ingredient appears in actual labels. Open product sample
- Move to a second ingredient page and compare registry fields plus catalog mass side by side. Open a peer record
- See the join rules behind screening scores before reading them as dietary advice. Open methodology
This page describes published source classifications and product-label coverage. It is not dietary, allergy, or medical advice.
Questions readers ask about Blue No 1
How should I read safety signals when Blue No 1 sits in heavily flagged products? ▼
63.6% of linked products contain at least one separately flagged ingredient, so the first task is locating which row carries the caution marker — not assuming Blue No 1 is the trigger. None of that replaces a product-, dose-, allergy-, or person-specific determination.
Which product shelves show up most often with Blue No 1? ▼
Blue No 1 ranks in the top decile by product count (#14,190 of 247,206), appearing in 11 indexed products led by Snacks. The sample list below is a slice of that footprint, not the full universe.
Why is Blue No 1 so common on ingredient lists? ▼
The source record does not name a technical effect, yet Blue No 1 appears in 11 products (#14,190 usage rank). High prevalence here describes formulation frequency, not an approved use level.
Regulatory status: FDA SAFFA (Blue No 1). Safety ratings: CSPI Chemical Cuisine; product presence: Open Food Facts via PlainFoodSafe (September 2026). Figures are computed from those sources, no editor-typed counts. Methodology · State regulations.