Is Tosylamide/Formaldehyde Resin safe in cosmetics?
Tosylamide/Formaldehyde Resin has a safety rating of "MODERATE" in our database. EU status: permitted. US status: prohibited.
Moderate
Cosmetic Ingredient
Tosylamide/Formaldehyde Resin
Also known as: 4-Methylbenzenesulfonamide polymer with formaldehyde, Formaldehyde, polymer with 4-methylbenzenesulfonamide, Formaldehyde-p-toluenesulfonamide polymer, p-Toluenesulfonamide, polymer with formaldehyde, Formaldehyde-p-toluenesulfonamide copolymer (+14 more)
INCI: TOSYLAMIDE/FORMALDEHYDE RESIN
Tosylamide/Formaldehyde Resin (CAS 25035-71-6) is a cosmetic cosmetic ingredient functioning as Film forming, plasticiser (nail lacquers). EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 25035-71-6 →
Auto-generated CPSR Part A draft with source citations
Function
Film forming, plasticiser (nail lacquers)
Safety Rating
MODERATE
Regulatory Status
EU EU Status
permitted
US US Status
prohibited
US Notes
Permitted; also listed as indirect food additive (polymer contact); banned in Washington State from Jan 2027 as a formaldehyde releaser
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Tosylamide/Formaldehyde Resin.
Calculate MoS for your specific formulation with the MoS Calculator.
Typical Use Concentrations
Reported concentration ranges per product category from SCCS/CIR/industry sources.
| Product Category | Typical Range | Max Reported | Source |
|---|---|---|---|
| Nail Polish | 5–15 | 20 | CIR/VCRP |
Additional Ingredient Properties
3 property records from structured ingredient metadata.
ecotoxicity
{"biodegradable": "partial", "biodegradation_days": "120-240", "bioaccumulative": "yes", "aquatic_toxicity_level": "high", "coral_reef_safe": "no", "marine_toxicity": "toxic", "freshwater_toxicity": "formaldehyde release", "endocrine_disruptor": "no", "persistent_organic_pollutant": "no", "microplastic": "no", "nano_particle": "no", "hawaii_banned": "no", "eu_restricted_environmental": "yes", "pal…
polymer
{"cas_number": "25035-71-6", "ingredient_class": "film_former/nail_film_former", "polymer_type": "synthetic_copolymer", "chemical_backbone": "amide", "molecular_weight_Da_range": "3000-15000", "ionic_character": "nonionic", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity": "moderate", "film_flex…
pregnancy_detail
{"pregnancy_safe": "avoid", "breastfeeding_safe": "avoid", "trimester_restriction": "all", "risk_category": "not-rated", "reason": "Formaldehyde-releasing nail polish resin", "alternative_ingredient": "Formaldehyde-free nail polish", "source": "dermatology literature"}
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Film former
Plasticizer
Regulatory List Membership (1)
FDA Indirect Food Contact Additives
Expert Verdict
Expert safety assessment and concern-level summary for Tosylamide/Formaldehyde Resin.
Regulatory Flags
potential-allergen
Known Synonyms
4-Methylbenzenesulfonamide polymer with formaldehyde
Formaldehyde, polymer with 4-methylbenzenesulfonamide
Formaldehyde-p-toluenesulfonamide polymer
p-Toluenesulfonamide, polymer with formaldehyde
Formaldehyde-p-toluenesulfonamide copolymer
Formaldehyde-p-toluenesulfonamide resin
Formaldehyde-tosylamide copolymer
Formalin-p-toluenesulfonic acid amide copolymer
Ketjenflex MH
Resimpol 80
Rit-O-Lite MHP
Santolite MHP
Santolite MS
Santolite MS 80
Sulfonex EST 100
Topler
Ultralac
p-Toluenesulfonamide-formaldehyde copolymer
p-Toluenesulfonamide-formaldehyde resin
Chemical Function
Film former
Plasticizer
Regulatory Lists
Indirect additives food contact (10/2018)
Europe; Personal care - nails - nail polish
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Tosylamide/Formaldehyde Resin allowed in the EU?
Tosylamide/Formaldehyde Resin EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Tosylamide/Formaldehyde Resin do in cosmetics?
Tosylamide/Formaldehyde Resin functions as: Film forming, plasticiser (nail lacquers). It is classified as a cosmetic ingredient in our database. CAS number: 25035-71-6.
Compliance Tools
Check Tosylamide/Formaldehyde Resin compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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