Sodium perborate tetrahydrate
- Product Code: 127714
THIS CHEMICAL IS PROHIBITED TO USE IN PERSONAL CARE IN MOST COUNTRY. PLEASE CHECK YOUR LOCAL REGULATION FIRST BEFORE PURCHASING
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THIS CHEMICAL IS PROHIBITED TO USE IN PERSONAL CARE IN MOST COUNTRY. PLEASE CHECK YOUR LOCAL REGULATION FIRST BEFORE PURCHASING
1 | What it is & how it works
-
Sodium perborate tetrahydrate (NaBO₃·4 H₂O) is a white, free-flowing crystalline solid that stores the reactive pair H₂O₂ + borate in a dry, stable form.
-
On contact with water (or at elevated humidity) it dissociates, releasing hydrogen-peroxide-derived active oxygen and a mildly alkaline borate buffer. This makes it a low-temperature oxidising/bleaching agent and a mild antimicrobial.
2 | Current personal-care uses (where still permitted)
| Segment | Typical role & dose | Formulation notes |
|---|---|---|
| Oral-rinse powders & denture cleansers | 3 – 4 % w/w in denture tablets; 1.2 g dissolved in 30 mL warm water for OTC oral-rinse directions in the US | Sold anhydrous; activated only at point-of-use. Provides effervescence, stain lift and short-contact antimicrobial effect.(dps-admin.fda.gov, pubmed.ncbi.nlm.nih.gov) |
| Tooth-whitening gels/pastes | Historically 5 – 15 % as mild bleach; now largely replaced by carbamide or calcium peroxide due to EU ban (see §3) | Needs pH 8-9 for sustained O₂ release; often combined with stabilisers (silicates, polyphosphates) and sequestering agents to control metal-catalysed decomposition. |
| Powder hair dyes & lighteners | Up to ≈30 % in the dry booster sachet, giving ≤ 3 % w/w “on-head” after mixture with developer.(ec.europa.eu) | Provides slow oxygen release to support oxidative dyeing or bleaching; supplied as very dry micronised powder—dust-inhalation is the main safety concern. |
| Denture soak, foot-soak and textile-bleach powders | 1–3 % active oxygen (A.O.). Personal-care cross-over mainly in spa/foot-care soaks. | Same oxygen-release chemistry; regulatory status follows cosmetics rules if intended for skin contact. |
3 | Regulatory landscape (large influence on market trend)
| Region / regime | Status (cosmetics & oral care) | Key driver |
|---|---|---|
| European Union / UK | Prohibited in any concentration since 1 Dec 2010. Classified CMR 1B for developmental & fertility toxicity.(en.wikipedia.org, single-market-economy.ec.europa.eu) | |
| United States (FDA OTC Monograph M022) | Permitted as “oral health-care drug” rinse powder: 1.2 g/30 mL (≈4 % soln) up to 4× daily.(dps-admin.fda.gov) | |
| Individual US States (e.g. California, Oregon) | Scheduled for cosmetic ban from 1 Jan 2027 under Toxic-Free Cosmetics Act expansion. | |
| Australia / NZ (NICNAS) | Classified Repr 1B, Acute Inh Cat 4; recommended restricted professional-only use with dust controls.(industrialchemicals.gov.au) | |
| ASEAN / Thailand | Follows EU Annex II for CMR; practical result → not allowed in cosmetics; still legal in non-cosmetic OTC rinses if treated as medicinal product. (Check Thai FDA listing for final confirmation.) | |
| Recent enforcement | 2025: Philippine watchdog ordered recall of powder hair dyes containing sodium perborate.(pressenza.com) |
4 | Safety & toxicology snapshot
| Endpoint | Findings |
|---|---|
| Acute inhalation | Harmful (ATE ≈ 1–2 mg/L dust); eye-damage Cat 1.(industrialchemicals.gov.au) |
| Repeated dose / reproductive | Boron moiety linked to decreased fetal weight & male fertility at ≥ 17 mg B/kg bw/day → CMR 1B classification. |
| Dermal absorption | Very low (~1 %). Most systemic exposure is oral or inhalation of dust. |
| pH & irritancy | Alkaline pH ≈ 9–10 in use-solution; can irritate mucosa. |
| Environmental | Releases boron (ecotoxic to plants/aquatic species at high WO/BAN), but breaks down to borate + O₂ (no AOX). |
5 | Formulation & handling guidelines (if legally acceptable in your market
-
Keep it dry – store < 30 % RH; package in multilayer foil/poly to prevent caking and oxygen loss.
-
Particle control – mill ≥ 100 µm or use agglomerated granules to drop respirable fraction below 0.1 % and comply with inhalation-hazard cut-off.
-
Chelation & stabilisers – include 0.1 % EDTA or deferiprone to sequester Fe²⁺/Cu²⁺, and silicates to absorb trace moisture.
-
pH window – formulating in dry powders or two-part systems avoids spontaneous decomposition; activate in-use at pH 8–9 for steady release.
-
Compatibility – avoid strong acids, reducing agents, anionic surfactants with high organic load; do not combine directly with essential oils in powder (fire risk).
-
Worker safety – local exhaust ventilation, FFP3 mask during charging; classified Eye Dam 1 / STOT SE 3 (resp).
-
Label – if used as medicinal oral rinse in the US, follow monograph directions exactly; for leave-on cosmetic exposure (skin, hair) check local CMR exemptions—rarely granted.
6 | Alternatives you might consider
| Function sought | Lower-risk substitute | Remarks |
|---|---|---|
| Oxidative hair bleaching | Sodium percarbonate + on-head H₂O₂ developer | Boron-free; similar oxygen yield, but faster dissolution. |
| Gentle tooth whitening | Carbamide peroxide (10 – 16 %) gels | Already monographed; lower dust hazard. |
| Denture cleansing tablet | Sodium percarbonate + TAED activator | Comparable effervescence, still classed as detergent not cosmetic in most markets. |
| Scalp/skin antimicrobial boost | Encapsulated H₂O₂ beadlets or lactoperoxidase system | Regulatory burden lower; lower eye/respiratory risk. |
Product appearance: white powder
Solubility: Can be distributed in any formula. (cannot be dissolved)
Storage: For long-term storage Store at room temperature. Avoid heat and light. Shelf life: 2 years.
Chemical Name : Sodium perborate tetrahydrate
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Sodium perborate tetrahydrate
THIS CHEMICAL IS PROHIBITED TO USE IN PERSONAL CARE IN MOST COUNTRY. PLEASE CHECK YOUR LOCAL REGULATION FIRST BEFORE PURCHASING
THIS CHEMICAL IS PROHIBITED TO USE IN PERSONAL CARE IN MOST COUNTRY. PLEASE CHECK YOUR LOCAL REGULATION FIRST BEFORE PURCHASING
1 | What it is & how it works
-
Sodium perborate tetrahydrate (NaBO₃·4 H₂O) is a white, free-flowing crystalline solid that stores the reactive pair H₂O₂ + borate in a dry, stable form.
-
On contact with water (or at elevated humidity) it dissociates, releasing hydrogen-peroxide-derived active oxygen and a mildly alkaline borate buffer. This makes it a low-temperature oxidising/bleaching agent and a mild antimicrobial.
2 | Current personal-care uses (where still permitted)
| Segment | Typical role & dose | Formulation notes |
|---|---|---|
| Oral-rinse powders & denture cleansers | 3 – 4 % w/w in denture tablets; 1.2 g dissolved in 30 mL warm water for OTC oral-rinse directions in the US | Sold anhydrous; activated only at point-of-use. Provides effervescence, stain lift and short-contact antimicrobial effect.(dps-admin.fda.gov, pubmed.ncbi.nlm.nih.gov) |
| Tooth-whitening gels/pastes | Historically 5 – 15 % as mild bleach; now largely replaced by carbamide or calcium peroxide due to EU ban (see §3) | Needs pH 8-9 for sustained O₂ release; often combined with stabilisers (silicates, polyphosphates) and sequestering agents to control metal-catalysed decomposition. |
| Powder hair dyes & lighteners | Up to ≈30 % in the dry booster sachet, giving ≤ 3 % w/w “on-head” after mixture with developer.(ec.europa.eu) | Provides slow oxygen release to support oxidative dyeing or bleaching; supplied as very dry micronised powder—dust-inhalation is the main safety concern. |
| Denture soak, foot-soak and textile-bleach powders | 1–3 % active oxygen (A.O.). Personal-care cross-over mainly in spa/foot-care soaks. | Same oxygen-release chemistry; regulatory status follows cosmetics rules if intended for skin contact. |
3 | Regulatory landscape (large influence on market trend)
| Region / regime | Status (cosmetics & oral care) | Key driver |
|---|---|---|
| European Union / UK | Prohibited in any concentration since 1 Dec 2010. Classified CMR 1B for developmental & fertility toxicity.(en.wikipedia.org, single-market-economy.ec.europa.eu) | |
| United States (FDA OTC Monograph M022) | Permitted as “oral health-care drug” rinse powder: 1.2 g/30 mL (≈4 % soln) up to 4× daily.(dps-admin.fda.gov) | |
| Individual US States (e.g. California, Oregon) | Scheduled for cosmetic ban from 1 Jan 2027 under Toxic-Free Cosmetics Act expansion. | |
| Australia / NZ (NICNAS) | Classified Repr 1B, Acute Inh Cat 4; recommended restricted professional-only use with dust controls.(industrialchemicals.gov.au) | |
| ASEAN / Thailand | Follows EU Annex II for CMR; practical result → not allowed in cosmetics; still legal in non-cosmetic OTC rinses if treated as medicinal product. (Check Thai FDA listing for final confirmation.) | |
| Recent enforcement | 2025: Philippine watchdog ordered recall of powder hair dyes containing sodium perborate.(pressenza.com) |
4 | Safety & toxicology snapshot
| Endpoint | Findings |
|---|---|
| Acute inhalation | Harmful (ATE ≈ 1–2 mg/L dust); eye-damage Cat 1.(industrialchemicals.gov.au) |
| Repeated dose / reproductive | Boron moiety linked to decreased fetal weight & male fertility at ≥ 17 mg B/kg bw/day → CMR 1B classification. |
| Dermal absorption | Very low (~1 %). Most systemic exposure is oral or inhalation of dust. |
| pH & irritancy | Alkaline pH ≈ 9–10 in use-solution; can irritate mucosa. |
| Environmental | Releases boron (ecotoxic to plants/aquatic species at high WO/BAN), but breaks down to borate + O₂ (no AOX). |
5 | Formulation & handling guidelines (if legally acceptable in your market
-
Keep it dry – store < 30 % RH; package in multilayer foil/poly to prevent caking and oxygen loss.
-
Particle control – mill ≥ 100 µm or use agglomerated granules to drop respirable fraction below 0.1 % and comply with inhalation-hazard cut-off.
-
Chelation & stabilisers – include 0.1 % EDTA or deferiprone to sequester Fe²⁺/Cu²⁺, and silicates to absorb trace moisture.
-
pH window – formulating in dry powders or two-part systems avoids spontaneous decomposition; activate in-use at pH 8–9 for steady release.
-
Compatibility – avoid strong acids, reducing agents, anionic surfactants with high organic load; do not combine directly with essential oils in powder (fire risk).
-
Worker safety – local exhaust ventilation, FFP3 mask during charging; classified Eye Dam 1 / STOT SE 3 (resp).
-
Label – if used as medicinal oral rinse in the US, follow monograph directions exactly; for leave-on cosmetic exposure (skin, hair) check local CMR exemptions—rarely granted.
6 | Alternatives you might consider
| Function sought | Lower-risk substitute | Remarks |
|---|---|---|
| Oxidative hair bleaching | Sodium percarbonate + on-head H₂O₂ developer | Boron-free; similar oxygen yield, but faster dissolution. |
| Gentle tooth whitening | Carbamide peroxide (10 – 16 %) gels | Already monographed; lower dust hazard. |
| Denture cleansing tablet | Sodium percarbonate + TAED activator | Comparable effervescence, still classed as detergent not cosmetic in most markets. |
| Scalp/skin antimicrobial boost | Encapsulated H₂O₂ beadlets or lactoperoxidase system | Regulatory burden lower; lower eye/respiratory risk. |
Product appearance: white powder
Solubility: Can be distributed in any formula. (cannot be dissolved)
Storage: For long-term storage Store at room temperature. Avoid heat and light. Shelf life: 2 years.
Chemical Name : Sodium perborate tetrahydrate
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