- This ingredient’s score is higher if used in products intended for use around mouth due to increased risk of ingestion and absorption.
- This ingredient’s score is higher if used in products intended for use on lips due to increased risk of ingestion and absorption.
- This ingredient’s score is higher if used in products that are inhalable (e.g., sprays, powders) because of respiratory concerns.
- Products with this ingredient are allowed for use in EWG VERIFIED but must meet use restrictions and warnings based on EWG review of company data.
Other ConcernsEcotoxicology (low), Irritation (skin, eyes, or lungs) (high), and Occupational hazards (high)
SYNONYMS1,1,2-TRIMETHYLETHANE, 2-METHYL- BUTANE, 2-METHYLBUTANE, BUTANE, 2-METHYL-, BUTANE, 2METHYL, and ISOPENTANE
This ingredient is not currently on EWG's Restricted or Unacceptable Lists.
Isopentane is a hydrocarbon.
See how this product scores for common concerns.
MODERATEAllergies & Immunotoxicity
LOWDevelopmental and Reproductive Toxicity
- DATA SOURCES
Products with this Ingredient
Irritation (skin, eyes, or lungs)
|Classified as skin irritant||CPS&Q - Classification & Labelling|
|Allowed workplace exposures restricted to low doses||CPS&Q - Classification & Labelling|
|Allowed workplace exposures restricted to moderate doses||CPS&Q - Classification & Labelling|
|Human any toxicant or allergen - strong evidence||Cosmetic Ingredient Review Assessments|
Organ system toxicity (non-reproductive)
|Classified as potentially toxic or harmful||CPS&Q - Classification & Labelling|
|Classified as not expected to be potentially toxic or harmful||Environment Canada Domestic Substance List|
|Classified as a low human health priority||Environment Canada Domestic Substance List|
|Wildlife and environmental toxicity||CPS&Q - Classification & Labelling|
|Not suspected to be an environmental toxin||Environment Canada Domestic Substance List|
|Occupational hazards related to handling||CPS&Q - Classification & Labelling|
|Risk assessment method deficiencies and data gaps - Maximum reported "as used" concentration is basis of safety assessment by industry safety panel (Cosmetic Ingredient Review, CIR) - implicit safe concentration limit in product||Cosmetic Ingredient Review Assessments|
|247 studies in PubMed science library may include information on the toxicity of this chemical||NLM PubMed|
Persistence and bioaccumulation
|Not suspected to be bioaccumulative||Environment Canada Domestic Substance List|
Multiple, additive exposure sources
|Designated as safe for general or specific, limited use in food||Cosmetic Ingredient Review Assessments|
|Industry or government recommendations for safe use: restrictions on concentration, impurities, product types, or manufacturing methods - any||Cosmetic Ingredient Review Assessments|
- CPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
- CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
- EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
- NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.
Cosmetics and personal care products are not required to be tested for safety before being allowed on the market. The Skin Deep® scoring system was designed to help the public understand whether a product is safe to use or whether it contains ingredients of concern.
Every product and ingredient in Skin Deep gets a two-part score – one for hazard and one for data availability. The safest products score well by both measures, with a low hazard rating and a fair or better data availability rating.HOW WE DETERMINE SCORES
The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. The EWG VERIFIED™ mark means a product meets EWG’s strictest criteria for transparency and health.
The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.