What does Iodopropynyl butylcarbamate do?

Used in cosmetics as a preservative.

Is Iodopropynyl butylcarbamate safe?

Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

beauty
cleaning
food
industrial

Iodopropynyl butylcarbamate

CAS 55406-53-6 · 20/100 · High conf.

Also registered as 5 other CAS numbers

84826-91-5 · 85045-09-6 · 104732-42-5 · 161849-41-8 · 1389329-45-6

Iodopropynyl butylcarbamate chemical structure

Concern score

20/100Minor concern based on regulatory listings.

High confidence

Iodopropynyl butylcarbamate in plain language

What it is: Also known as 3-IODO-2-PROPYNYLBUTYLCARBAMATE · Iodopropynyl butyl carbamate · Ipbc · 3-Iodo-2-propynyl butylcarbamate · 3-Iodo-2-propynyl-N-butylcarbamate · Preservative
Show all 24 names
3-IODO-2-PROPYNYL-N-BUTYL carbamate · 3-Iodoprop-2-yn-1-yl butylcarbamate · 3-iodoprop-2-ynyl N-butylcarbamate · 3-IODOPROPYNYL butyl carbamate · 3-IPBC · 3-Iod-2-propinylbutylcarbamat · 3-Iodo-2-propynyl N-butylcarbamate · 3-Iodopropargyl n-butylcarbamate · 3-iodo-2-propyn-1-yl N-butylcarbamate · 3-iodo-2-propynl butylcaramate · 3-iodo-2-propynyl butyl carbamate · 3-iodoprop-2-yn-1-yl N-butylcarbamate · 3-iodoprop-2-ynyl butylcarbamate · Butyl-3-iodo-2-propynylcarbamate · Caswell No. 501A · Iodocarb · Troysan KK-108A · Woodlife
What it does: Used in cosmetics as a preservative.
Preservative
Antimicrobial
Is it a concern?: Minor concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — Iodopropynyl butylcarbamate appears on published "allowed" regulatory lists rather than on a restriction list.

3-Iodo-2-propynylbutylcarbamate is listed in Annex V of the EU Cosmetics Regulation (EC) 1223/2009 (preservatives allowed in cosmetic products).

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Iodopropynyl butylcarbamate appears in these published regulatory listings.

EU Annex V — permitted preservative
EU permitted preservative

Recorded in these product areas

Found in consumer products
Beauty
Cleaning
Industrial

EUCosIngActive2 entries
- Cosmetics Regulation annex V / ref 56.Source →
- Iodopropynyl Butylcarbamate is the organic compound that conforms to the formula: Restriction: V/56Source →
EUECallowed_listedAnnex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Product types: a) Rinse-off products b) Leave-on products c) Deodorants/antiperspirants Maximum concentration: a) 0.02% b) 0.01% c) 0.0075% Other conditions: Not to be used in oral and lip products a) Not to be used in products for children under 3 years of age, except in bath products / shower gels and shampoos b) Not to be used in body lotion and body cream (13) b) and c) Not to be used in products for children under 3 years of age Conditions of use and warnings: a) Not to be used for children under three years of age (11) b) and c) Not to be used for children under three years of age (12)
- Annex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Product types: a) Rinse-off products b) Leave-on products c) Deodorants/antiperspirants Maximum concentration: a) 0.02% b) 0.01% c) 0.0075% Other conditions: Not to be used in oral and lip products a) Not to be used in products for children under 3 years of age, except in bath products / shower gels and shampoos b) Not to be used in body lotion and body cream (13) b) and c) Not to be used in products for children under 3 years of age Conditions of use and warnings: a) Not to be used for children under three years of age (11) b) and c) Not to be used for children under three years of age (12)Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 230 composition records across product categories including Raw materials, Home maintenance, Construction. EPA CPDat classifies this chemical for functional uses including Preservative, Biocide, Processing aids not otherwise specified.
- EPA CPDat observed this chemical in 230 composition records across product categories including Raw materials, Home maintenance, Construction. EPA CPDat classifies this chemical for functional uses including Preservative, Biocide, Processing aids not otherwise specified.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
USUSDA FoodData Centralobserved in branded food ingredient statementsObserved in 4 USDA branded foods including 1 LITER BOTTLE BLACKCHERRY, 1 LITER BOTTLE DIET BLACK CHERRY, 1 LITER BOTTLE DIET CREAM.
- Observed in 4 USDA branded foods including 1 LITER BOTTLE BLACKCHERRY, 1 LITER BOTTLE DIET BLACK CHERRY, 1 LITER BOTTLE DIET CREAM.Source →

Expert safety opinions

No expert opinion on file for Iodopropynyl butylcarbamate. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Iodopropynyl butylcarbamate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

8 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EU CosIng Cosmetics Regulation Annexes
regulatory · updated 2010-10-16
Open →
EPA Chemical and Products Database
exposure · updated september 18, 2015
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA GSRS UNII
registry · updated 2026-02-26
Open →
openFDA Substance
registry · updated 2026-05-24
Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Open →
USDA Branded Foods
product_occurrence · updated 2026-02-19
Open →

Reference links (1)

Openfda substance

chemindustry.com

Read →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Iodopropynyl butylcarbamate in a product composition. These are source records, not Greenveil catalog products.

Source records

230

Named organisations

Raw materialsHome maintenanceConstructionIndustrial productsConstruction and building materialsPersonal care

Typical roles

PreservativeAntimicrobial

See products using Iodopropynyl butylcarbamate →

Catalog

Found in these products

Cosmetic and personal-care products that list Iodopropynyl butylcarbamate are shown first. Their ingredient lists include Iodopropynyl butylcarbamate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 158 →Find products without it →