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SEMITI NANO-30 vs BASF Z-COTE HP1

SEMITI NANO-30 is nano TiO2; BASF Z-COTE is nano ZnO. Different actives — many formulators stack them for full UVA-I + UVA-II + UVB.

These are different active ingredients, not direct competitors. BASF Z-COTE HP1 is nano-coated ZnO (zinc oxide); SEMITI NANO-30 is nano-coated TiO2. Each has distinct UV protection profile and formulation considerations.

Side-by-side specification

Typical published specs for the two grades. Customer-specific CoA on inquiry.

PropertySEMITI NANO-30BASF Z-COTE HP1
Active ingredientTitanium dioxideZinc oxide
UV protection rangeUVB + UVA-IIUVB + UVA-I + UVA-II
SPF contribution efficiencyHigher per kgLower per kg
Transparency on skinSlightly bluish white cast at high loadingSlightly bluer white cast
Photocatalytic riskLow (coated)Very low (intrinsic)

Bold amber indicates the column with the stronger value on that line.

When to choose which

Choose
SEMITI NANO-30
  • →Maximum SPF per kg of active
  • →Photo-protection at UVB and UVA-II range
  • →Reef-safe sunscreens (both Ti and Zn are reef-safe)
Choose
BASF Z-COTE HP1
  • →Full UVA-I coverage (290–400 nm)
  • →Sensitive skin / pediatric sunscreens
  • →Stack as 70% TiO2 + 30% ZnO for full broad-spectrum coverage

Drop-in substitution

Most modern broad-spectrum sunscreens use BOTH actives. Typical: SEMITI NANO-30 (6–8%) + nano-ZnO (3–5%) for full UVB + UVA-I + UVA-II coverage. We supply matched nano-ZnO on inquiry.

Pricing context

Different markets — not directly comparable pricing.

Bottom line

Use both, not either-or, for premium broad-spectrum sunscreen.

Full SEMITI NANO-30 details

nano · sulfate
SEMITI NANO-30
Nano TiO2 (UV Filter Grade)

Hydrophobic surface-coated nano TiO2 (15–30 nm) for transparent UV protection in sunscreens and BB creams.

Full TDS, specifications, dosage →

Common questions

Should I use SEMITI NANO-30 or BASF Z-COTE HP1 in my sunscreen — or both?+
These are different active ingredients (TiO2 vs ZnO), not direct substitutes. Most modern broad-spectrum sunscreens use both: SEMITI NANO-30 (6–8%) for UVB + UVA-II coverage combined with nano-ZnO (3–5%) for UVA-I coverage. Using both gives full UVB + UVA-I + UVA-II protection. We supply matched nano-ZnO on inquiry.
Which gives better SPF per kg — SEMITI NANO-30 (TiO2) or Z-COTE (ZnO)?+
SEMITI NANO-30 (TiO2) delivers higher SPF contribution per kg of active at equivalent loading, making it more efficient for SPF rating. Z-COTE (ZnO) covers the full UVA-I range (340–400 nm) which TiO2 does not reach. For maximum SPF efficiency, lead with TiO2; for full UVA protection, add ZnO.
When should I choose Z-COTE over SEMITI NANO-30?+
Choose Z-COTE when: (1) full UVA-I coverage (290–400 nm) is the primary requirement, (2) formulating for sensitive skin or pediatric sunscreens where ZnO is preferred, or (3) stacking with TiO2 to achieve broad-spectrum coverage. Both are reef-safe. For UVB-dominant SPF boosting, SEMITI NANO-30 is more efficient per kg.

Request SEMITI NANO-30 sample for BASF Z-COTE HP1 substitution trial

Free 25 kg sample for technical evaluation. We typically respond within 24 hours UTC+8. FOB / CIF / DDP terms available to most ports worldwide.

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