Is Carboxymethyl Chitosan safe in cosmetics?
Carboxymethyl Chitosan has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.
Moderate
Cosmetic Ingredient
Carboxymethyl Chitosan
INCI: CARBOXYMETHYL CHITOSAN
Carboxymethyl Chitosan (CAS 83512-85-0) is a cosmetic cosmetic ingredient functioning as Film forming, gel forming, viscosity controlling, moisturising, antimicrobial. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 83512-85-0 →
Auto-generated CPSR Part A draft with source citations
Function
Film forming, gel forming, viscosity controlling, moisturising, antimicrobial
Safety Rating
MODERATE
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted in cosmetics; not separately GRAS-listed
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Carboxymethyl Chitosan.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
2 property records from structured ingredient metadata.
biopolymer
{"cas_number": "not_assigned", "polymer_class": "chitin_derivative", "botanical_source": "Chitosan (carboxymethylated)", "molecular_weight_range_kDa": "100-600", "monosaccharide_composition": "carboxymethyl-D-glucosamine", "degree_of_branching": "linear", "charge_type": "amphoteric", "viscosity_1pct_solution_mPas": "100-800", "pseudoplastic_behavior": "moderate", "thixotropy": "weak", "yield_stres…
polymer
{"ingredient_class": "conditioning/moisturizing", "polymer_type": "protein_based", "chemical_backbone": "chitin", "ionic_character": "amphoteric", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity": "moderate", "film_transparency": "transparent", "removability": "easy", "flyaway_reduction": "no", …
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Film former
Viscosity modifier
Expert Verdict
Expert safety assessment and concern-level summary for Carboxymethyl Chitosan.
Regulatory Flags
potential-allergen
Chemical Function
Film former
Viscosity modifier
Regulatory Lists
Canada; Personal care; Substances in PCP - Canada (4/2014)
Frequently Asked Questions
Is Carboxymethyl Chitosan allowed in the EU?
Carboxymethyl Chitosan EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Carboxymethyl Chitosan do in cosmetics?
Carboxymethyl Chitosan functions as: Film forming, gel forming, viscosity controlling, moisturising, antimicrobial. It is classified as a cosmetic ingredient in our database. CAS number: 83512-85-0.
Compliance Tools
Check Carboxymethyl Chitosan compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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