Is Hydrated Silica safe in cosmetics?
Hydrated Silica has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.
Excellent
Cosmetic Ingredient
Hydrated Silica
Also known as: Caswell No. 734, EINECS 215-683-2, EPA Pesticide Chemical Code 072602, Hydrosilisic acid, Silicon hydroxide (+2 more)
INCI: HYDRATED SILICA
Hydrated Silica (CAS 1343-98-2) is a cosmetic cosmetic ingredient functioning as Abrasive, thickener, opacifier, mineral exfoliant. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 1343-98-2 →
Auto-generated CPSR Part A draft with source citations
Function
Abrasive, thickener, opacifier, mineral exfoliant
Safety Rating
EXCELLENT
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted cosmetic ingredient; no pre-market FDA approval required. Listed in FDA Inactive Ingredient Database: max 3.4% w/w in topical creams, 0.25% w/w in topical gels. Silicon dioxide has GRAS status for food use under 21 CFR 172.480 (max 2% as anticaking agent). Not an active sunscreen ingredient.
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Hydrated Silica.
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 |
|---|---|---|---|
| Toothpaste | 10–25 | 40 | CIR/VCRP |
Additional Ingredient Properties
5 property records from structured ingredient metadata.
oral_care
{"cas_number": "112926-00-8", "ingredient_class": "abrasive", "function_primary": "Abrasive", "function_secondary": "Thickener", "anti_caries_mechanism": "None direct (mechanical cleaning)", "fluoride_content_ppm_if_applicable": "0", "anti_plaque_mechanism": "Mechanical removal", "biofilm_disruption": "Mechanical", "anti_gingivitis_mechanism": "Indirect (plaque removal)", "whitening_mechanism": "A…
pediatric_safety
{"safe_for_newborn_0_6m": "yes", "safe_for_infant_6_12m": "yes", "safe_for_toddler_1_3y": "yes", "safe_for_child_3_12y": "yes", "safe_for_teen_12_18y": "yes", "pediatric_max_concentration_pct": "10.0", "adult_max_concentration_pct": "10.0", "pediatric_dermal_absorption_factor": "minimal", "oral_ingestion_risk": "low", "respiratory_risk_pediatric": "low", "diaper_area_safe": "yes", "pediatric_aller…
polymer
{"cas_number": "112926-00-8", "ingredient_class": "opacifier/texture_modifier", "polymer_type": "other", "chemical_backbone": "other", "ionic_character": "nonionic", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity": "moderate", "film_transparency": "transparent", "removability": "easy", "flyaway…
sensory
{"silky": "powdery", "smooth, glides easily": "light, absorbing", "dry-touch, non-greasy": "dry, smooth", "instant": "instant", "low": "low", "w/o": "o/w", "very-high": "excellent", "no": "no", "yes": "no", "light-diffusing": "matte", "1.40": "1.45", "transparent": "opaque", "colorless": "white", "excellent": "excellent", "light": "light", "synthetic": "mineral"}
uv_stability
{"uv_stable": "yes", "uv_degradation_rate": "stable", "photosensitizer": "no", "phototoxic": "no", "photoallergic": "no", "requires_uv_protection_packaging": "no", "color_change_uv": "no", "odor_change_uv": "no", "efficacy_loss_uv_pct": "0", "spf_contribution": "no", "uva_protection": "no", "uvb_protection": "no", "photostable_sunscreen": "no", "boost_spf_of_others": "no", "antioxidant_under_uv": …
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Dispersing agent
Filler
Processing aids not otherwise specified
Surface modifier
Regulatory List Membership (1)
FDA Indirect Food Contact Additives
Expert Verdict
Expert safety assessment and concern-level summary for Hydrated Silica.
Regulatory Flags
eu-unrestricted
cir-approved
gras-fda
nano-form
eu_children_restricted
ifra_fragrance
NOAEL Studies Summary
View details ->Public NOAEL study rows linked to Hydrated Silica by CAS number or substance name.
Studies
1
Lowest NOAEL
500 mg/kg bw/day
Highest NOAEL
500 mg/kg bw/day
ToxValDB_ECHA_IUCLID
Known Synonyms
Caswell No. 734
EINECS 215-683-2
EPA Pesticide Chemical Code 072602
Hydrosilisic acid
Silicon hydroxide
Sipernat D 10
UNII-Y6O7T4G8P9
Chemical Function
Processing aids not otherwise specified
Dispersing agent
Filler
Surface modifier
Regulatory Lists
drinking_water; Europe; manufacturing; plastic_additive
Canada; consumer_product; Substances in Products - Canada (4/2014)
inert_ingredient; Pesticides
inert_ingredient; non_food_use; Pesticides
Indirect additives food contact (10/2018)
Europe; supplements
Canada; pharmaceutical
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Hydrated Silica allowed in the EU?
Hydrated Silica EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Hydrated Silica do in cosmetics?
Hydrated Silica functions as: Abrasive, thickener, opacifier, mineral exfoliant. It is classified as a cosmetic ingredient in our database. CAS number: 1343-98-2.
Compliance Tools
Check Hydrated Silica compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
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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