Zinador™ 35L is an 85% bio-based odour neutralising active with 75% higher zinc than Zinador™ 22L. Zinador™ 35L exhibits improved compatibility with high salt and high surfactant formulations over Zinador™ 22L. With a significant increase in zinc level, Zinador™ 35L showcases excellent odour neutralising properties against a broad range of odours. Suitable for a wide range of applications, Zinador™ 35L stands out in laundry formulations with its proven ease of formulation and lower cost in use compared to other zinc-based odour neutralisers. Developed and produced with Itaconix polymer technology.
Ask Croda Questions
Ask the Supplier
Knowde Enhanced TDS
Identification & Functionality
Zinador™ 35L Features & Benefits
Applications & Uses
- Laundry care
- Carpet cleaners and shampoos
- Fabric and upholstery refreshers and cleaners
- Air fresheners
- Bathroom and surface cleaners
- Fabric capsules (pods)
- Fabric detergents
- Auxiliary fabric products
|Value||Units||Test Method / Conditions|
|Average Molecular Weight||4500||g/mol||-|
|Active Zinc Content||3.5||%||-|
|Majority Bio-based||95 - 50||%||-|
Technical Details & Test Data
Odor Reduction Performance
Zinc complexes are widely used to neutralize odors caused by hydrogen sulfide, mercaptans, thioethers, isovaleric acid and ammonia. Zinador 35L is a new technology that provides an easier-to-use, more cost-effective approach to formulating zinc complexes into household and industrial products to give effective odor neutralization.
Improved Solubility and Formulation Compatibility
To meet consumer demands, odor neutralizer formulations have become increasingly complex. High surfactant or salt systems such as laundry detergents can prove difficult to formulate due to lack of compatibility. Zinador™ 35L maintains clarity in solution up to 3.4% sodium chloride, compared to 2% for Zinador 22L (Figure 1). Zinador™ 35L provides similar improvement in hard water (2500 ppm calcium carbonate) samples.
Figure 1: Zinador 35L solution remains clear up to 3.4% NaCl, while Zinador 22L becomes cloudy at 2% NaCl (at equivalent zinc levels of 0.1%).
To demonstrate compatibility between Zinador 35L and liquid laundry detergents, 2% of Zinador 35L and Zinador 22L were added to ten different commercially available liquid laundry detergents.
After the addition of Zinador 35L eight of the ten detergents tested were clear while only two detergents were clear after the addition of Zinador 22L. Figure 2 shows the difference between the two Zinador products when added at 2% to a commercially available, fragrance-free liquid laundry detergent.
Figure 2: Visual comparison of Zinador 35L vs. Zinador 22L when added to a commercial fragrance-free detergent
Odor Reduction Panel Testing – Performance Testing Against Body Odor
Zinador 35L was compared to Zinador 22L and a fully formulated, commercially available zinc ricinoleate product in independent laboratory panel testing, to determine the effectiveness against real body odor.
At the same zinc level, all three tested products performed equally. Incorporation of surfactant to Zinador 35L resulted in significantly higher performance than the fully formulated, commercially available zinc ricinoleate product.
Figure 3: Odor reduction panel test results for Zinador 35L against body odor compared to zinc ricinoleate (0.05% active Zn). Data recorded 2 hours after initial treatment to show durable effect.
Zinador™ delivers excellent odor reduction, with equal to or better performance than the current market-leading zinc-based odor neutralization technology.
Odor Reduction Panel Testing – Performance Testing Against Cat Urine Odor
Independent laboratory panel testing was completed to determine the effectiveness of zinc-based odor neutralizers against cat urine on fabric swatches. Zinador 22L and Zinador 35L showed equivalent performance at the same zinc level. Zinador 35L provides 75% more odor neutralizing power than Zinador 22L at equivalent level of product. As shown in Figure 4, Zinador 35L addition of a surfactant improves performance.
Figure 4: Odor reduction panel test results for Zinador 35L against cat urine odor compared to zinc ricinoleate (0.05% active Zn). Data recorded immediately after treatment.
Formulated Zinador delivers excellent odor reduction performance, with equal to or better performance than the current market-leading zinc-based odor neutralization technology.
Odor Reduction Testing – Performance Testing Against Ammonia Odor
In Figure 5, GC/Headspace analysis shows binding of ammonia by Zinador 35L and zinc ricinoleate as a function of increasing levels of active. 1% solutions of Zinador 35L and zinc ricinoleate were plotted on x-axis (mL).
Figure 5: Odor reduction performance testing on ammonia
The results in Figure 5 shows that Zinador 35L provides significantly improved odor neutralization of ammonia versus zinc ricinoleate at the same zinc level (~0.03%).
Odor Reduction Testing – Performance Testing Against Fishy Amine Odor
Zinador 35L provides significantly improved odor neutralization than a zinc ricinoleate product at the same zinc level (~0.03%) .Figure 6: Odor reduction performance testing on fishy amine odor
Zinador 35L in Laundry Detergent
A build-up of body soil during the wear-wash-wear cycle of fabrics can result in a fatty organic residue causing malodour on the fabric. To prove the efficacy of Zinador 35L, two sets of standardized malodour swatches were washed in a front-loading washing machine on the warm temperature setting. The swatches were washed with a fragrance-free detergent containing either Zinador 35L or zinc ricinoleate, both at an equal zinc level of 0.1%. A panel of analysts were asked which swatch had less odor, both before and after line drying. The damp swatch was tested immediately after a rinse and the dry swatch was tested after line drying for 3 hours.
Figure 7: Zinador 35L performance on washed swatches containing malodour both before and after line drying
The results in Figure 7 show that most panellists found that swatches washed with detergent containing Zinador 35L had less odor. This was evident when evaluating both wet and dry (74% and 84% respectively). Adding Zinador 35L to laundry detergent has been shown to significantly reduce persistent body odors on fabric both before and after drying, making Zinador 35L the ideal choice for odor control in laundry detergents.
Wide Formulation Compatibility
ZINADOR™ 35L is an 85% bio-based product that delivers major new formulating and cost advantages over the current market-leading technologies. Formulating with ZINADOR™ 35L is easier and more effective than current leading zinc based technology. You do not need to add:
- Anti-foaming agents
Packaging & Availability
Storage & Handling
ZINADOR™ 35L is 100% water soluble, with excellent stability in very hard water conditions, over a broad pH range (2- 11) and temperature range. Current leading zinc-based odor neutraliser technologies require different products for different pH ranges, as well as added chelators for protection against hard water conditions.
ZINADOR™ 35L is fully compatible with leading non-ionic and anionic surfactants, fragrances and hydrogen peroxide.
It should be transported and stored below 40°C and is stable to freeze/thaw. In end-use formulations ZINADOR™ 35L is stable up to 60°C. ZINADOR™ 35L was developed and produced with Itaconix polymer technology.