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Purox® – Preservation meets purity and sustainability

LANXESS supplies Purox® B and Purox® S, two ultra-high purity preservatives based on benzoic acid and its sodium salt. These nature-identical ingredients are used globally in food, beverages, personal care, cosmetics, pharmaceuticals and industrial applications.

Purox® B – The purest benzoic acid on the market

LANXESS offers Purox® B in several purity grades – including the highest commercially available purity of 99.98 %. Benzoic acid is a naturally occurring compound found in fruits, cinnamon and cloves.
Purox® B Food/Pharma is widely used as a nature-identical preservative in:
• Food products such as pizzas, tortillas and fish
• Personal care and cosmetic formulations
• Pharmaceuticals
• Industrial applications including resins, paints and plasticizers

Key advantages:

• Minimum purity of 99.98 %
• No discoloration
• Low agglomeration tendency
• Easy handling in all physical forms

Its exceptional purity makes Purox® B especially well suited for sensitive applications like skin care and cosmetics, where product stability and consumer safety are critical. LANXESS is the world’s largest manufacturer of benzoic acid, delivering quality, reliability and global expertise.


Purox® S – Ultra-pure sodium benzoate for trusted preservation

Purox® S Grains is an ultra-high purity sodium benzoate with a typical purity of ≥99.9 %.
It is a globally recognized preservative used in food, beverages, personal care, cosmetics and pharmaceuticals. 

Application highlights:
• Effective up to pH 6.5
• Can be combined with other preservatives and multifuntionals for broader pH range
• Recognized as E211, approved by FDA and EFSA as GRAS

Technical benefits:
​• Optimized particle size
​• Low dust
​• High flowability
​• Excellent dissolution

In personal care, Purox® S is a clean-label alternative to parabens and formaldehyde releasers – ideal for modern, health-conscious formulations.


  Purox® B Food/Pharma Benzoic Acid  Purox® S Grains Sodium Benzoate  
INCI   Benzoic acid
 Sodium benzoate 
Purity   minimum 99.98%  minimum 99.98% 

Forms

 Flakes (“chips”) Grains
Visual Description
 White
 White
Regulatory Listings 
 US-FDA GRAS, EFSA E210  US-FDA GRAS, EFSA E211
Certifications FSSC 22000 FSMS, ISO 9001:2015 QMS; ISO 14001:2015 EMS; ISO 45001:2018 OHSMS; Kosher; Halal  FSSC 22000 FSMS, ISO 9001:2015 QMS; ISO 14001:2015 EMS; ISO 45001:2018 OHSMS; FAMI-QS; Kosher; Halal 
Standards National Formulary (NF), Food Chemicals Codex (FCC), E210  National Formulary (NF), Food Chemicals Codex (FCC), E210 
Food & beverage applications  Flour and corn tortillas, pancakes, pizza, and other non-yeast-raised bakery products; sauces; hot-packprocessed and canned products (e.g. tomatoes and fruits), seafood products; beverages, such as soft drinks and spirits  Jams, jellies, dressings, sauces, condiments, pickles, olives, pastries; feed silage; beverages such as soft drinks, low alcohol beverages and non-alcoholic beer 
Personal Care applications 
 Leave-On and Rinse-Off Skin Care, Hair Care, Wipes, Deodorant, Oral Care, Feminine Hygiene, Pharmaceuticals  Leave-On and Rinse-Off Skin Care, Hair Care, Wipes, Deodorant, Oral Care, Color Cosmetics, Feminine Hygiene, Pharmaceuticals 

Sustainability through Scopeblue®

LANXESS now offers Purox® B and Purox® S made from sustainable raw materials and renewable energy, following the ISCC PLUS certified mass balance approach. These versions are marketed under the LANXESS Scopeblue® umbrella brand, and contribute to climate goals without compromising product quality.

Scopeblue® Purox® products offer:

✔ Measurably improved carbon footprints

✔ Premium product quality and purity

✔ Identical performance and regulatory compliance

The product carbon footprints are certified by TÜV Rheinland/TÜV Süd, based on ISO 14067 and in line with SBTi standards. These efforts support LANXESS’ Net Zero Value Chain Initiative:

• Climate neutrality for Scope 1 and 2 emissions by 2040
• Elimination of Scope 3 emissions by 2050

Our sustainability experts are available to help you meet your climate and compliance goals. 

Why choose Purox® from LANXESS?

✔ Ultra-high purity: 99.98 % (Purox® B), 99.9 % (Purox® S) 

✔ Broad regulatory approvals (FDA, EFSA, GRAS, E211)

✔ Suitable for personal care, food, pharma and industrial use

✔ Industry leading Technical, microbiology and regulatory expertise

✔ Strong commitment to sustainability: COSMOS, NATRUE certified products available, Scopeblue options of products

✔ Backed by global expertise and reliable supply from LANXESS

 

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