Isobutane: CIR Safety Assessment Summary
CIR safety assessment summary for Isobutane: ingredients reviewed, panel verdict, use concentration context, conditions, and source citation.
Isobutane appears in a CIR safety assessment covering Isobutane, Isopentane, n-Butane, Propane. The panel verdict for the report is safe. On the basis of the available information presented herein, Isobutane, Isopentane, n-Butane, and Propane are considered safe as cosmetic ingredients under present conditions of concentration and use.
| Field | CIR value |
|---|---|
| Primary ingredient | Isobutane |
| CIR verdict | safe |
| Report type | Final Report |
| Date | 1982 |
| Conditions or carve-outs |
Ingredients Reviewed
The review scope matters because CIR conclusions often apply to an ingredient family rather than a single INCI name. In this report, the ingredient list includes Isobutane, Isopentane, n-Butane, Propane.
Safety Conclusion
The conclusion for Isobutane should be read as a CIR panel conclusion, not a regulatory limit. CIR assessments summarize expert-panel safety determinations for cosmetic use, while legal status still depends on the jurisdiction and product category.
Conditions
On the basis of the available information presented herein, Isobutane, Isopentane, n-Butane, and Propane are considered safe as cosmetic ingredients under present conditions of concentration and use.
Formulation Reading
For formula review, begin with the exact INCI identity and the ingredient group covered by the CIR assessment. If the material is Isobutane, the relevant comparison is whether the intended use aligns with the practices, concentration ranges, and conditions described in the CIR source.
The ingredient hub at Isobutane should carry the substance-level profile. This page is the report-level summary, keeping the conclusion, ingredient scope, and use-context language attached to the CIR source rather than treating the conclusion as a universal permission.
Why This Page Exists
CIR reviews are long documents, and the practical answer is usually buried in the conclusion and the table of current practices. This summary keeps those CIR facts in one indexable page for Isobutane, with source details retained at the bottom for audit.
Review Notes
The conservative reading is to keep Isobutane tied to the exact CIR report listed below. The ingredient family, panel conclusion, date, and any use-condition language belong together. A shorter ingredient-page snippet would lose that context.
This page gives the search-level answer while preserving the source-level caveat: CIR safety language is a panel assessment for cosmetic practices of use, not a universal legal permission across every jurisdiction or product category.
The source section is intentionally specific. It keeps Isobutane connected to the CIR report file and conclusion page so the summary remains an audit-friendly report page instead of a loose ingredient claim.
Source
- CIR report: Final Report of the Safety Assessment of Isobutane, Isopentane, n-Butane, and Propane
- CIR source file: pr234.pdf
- Extraction JSON: Source documentation archived.
- Conclusion page in CIR extraction: 14