Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Cleaning Ingredients Functions
- Technologies
- Product Families
- Chemical Name
- ASE rheology modifier
Features & Benefits
- Benefit Claims
- Labeling Claims
- HII Features
- Key Benefits
• Effective thickening of ethanol and 2-propanol based hand sanitizers
• Structure 2020 is a low viscosity, white liquid emulsion of 30% actives - easily pumpable
• Thickener product is non-hazardous and carries no warning label
• Product mixes easily into the target alcohol
• Liquid emulsion thickener allows quicker formulation than when using solids typically used, avoiding lengthy hydration and high shear preparation methods
• The emulsion viscosifies and clears upon the addition of alkaline neutralizing agents (such as TEA or AMP) - the resulting viscosified alcohol is water white
• Formulated product rheology matches that of market leading technologies
• Formulated systems are both viscous and elastic – air bubbles can be held inside the gel
• Typical dosage 3-5% active in 70% ethanol. Similar dosage also viscosifies 2-propanol solutions
• Formulated gel provides good viscous pump disperser action, spreads easily on hands, providing a luxurious handfeel with rubbing. It dries quickly leaving hands feeling soft
• Patent pending- Rheology of Formulated Hand Sanitizers Using Structure 2020
The flow characteristics of a hand sanitizer over a variety of shear conditions are an important component of the consumer experience with a clear alcohol-based hand sanitizers. This includes high shear environments such as during pump dispensing and hand rubbing, to low shear environments, such as shelf appearance and initial texture post dispersing. Structure 2020 is developed to follow very similar rheological properties to the leading 70% ethanol-based hand sanitizers on the market today as shown in figure 4. This rheological behavior should mean that Structure 2020 formulated hand sanitizers meet customer expectations when formulated and applied.
Determination of the preferred rheology of the finished sanitizing gel rheology depends upon the customer expectation, alcohol selected and concentration of the alcohol in the final formulation. Our studies show that suitable gels can be created in concentrations between 3 and 5% active. As Structure 2020 is 30% active, this means a dose range of between 10 and 16.6% as sold product.Figure 4. Anton Paar measurement of the 16.6% Structure 2020 formulation in ethanol (gray line), in 2-propanol (red line) when compared with the leading consumer product (black line)
Applications & Uses
- Markets
- I&I Cleaning Applications
- Personal Hygiene Applications
Properties
- Appearance
- White emulsion
- Physical Properties
- Characteristics
- Specifications
- Framework formulations
To prepare effective hand sanitizers from ethanol or 2-propanol, the following formulations are provided for guidance, giving the viscosity, pH and clear appearance as described below. Modification of some of the ingredient’s concentrations will modify the properties of the gel. So too, addition of other ingredients that might be included in the formulation i.e. perfume, color etc.
Ethanol based hand sanitizer – 5% active Structure 2020
Ethanol 70% Glycerol 0.5% Structure 2020 16.6% (5% total active) Aminomethyl propanol 1.9% (50% solution) Resulting viscosity (Brookfield Sp 5,
20 RPM, 20°C)6400 cps Resulting pH 7.5 Water 11% Resulting appearance clear 2-Propanol based hand sanitizer
2-Propanol 70% Glycerol 0.5% Structure 2020 16.6% (5% total active) Water 11% Aminomethyl propanol 1.9% (50% solution) Resulting viscosity (Brookfield Sp 5,
20 RPM, 20°C)5600 cps Resulting pH 7.4 Resulting appearance clear The amount of Structure 2020 can be varied to meet desired properties.
| Value | Units | Test Method / Conditions | |
| Viscocity (at 25°C) | max. 200 | cps | — |
| Viscosity (pH 9.0, NaOH, 25°C, 10 rpm, 2.5% (dry)) | 10000 - 15000 | cPs | — |
| Value | Units | Test Method / Conditions | |
| Density (at 25°C) | 8.82 | lbs/U.S. gal | — |
| Specific Gravity (at 25°C) | 1.06 | g/cc | — |
| Value | Units | Test Method / Conditions | |
| pH | 2.2 - 3 | — | — |
| Solid Content | 29 - 31 | % | — |
Packaging & Availability
- Country Availability
- Regional Availability
- Regional Availability
- Global
Storage & Handling
- Storage Conditions
Structure 2020 is available in bulk, intermediate bulk and 55-gallon drums. Storage tanks should be plastic, fiberglass, or 316 stainless. Pumps should be low-shear type, such as diaphragm or peristaltic type with all wetted parts and lines being stainless steel, plastic or Teflon®. Mild steel, copper, brass and aluminum should not be used. Filtering should be under low shear and volume flow conditions. Freezing should be avoided as it destabilizes the emulsion. The recommended storage temperature is 5-50°C (40-120°F). Dilution or pH adjustment of the product may require additional preservative to prevent biological growth. Keep containers tightly sealed to the prevent emulsion from air drying and forming a film. Teflon® is a registered trademark of E.I. Dupont De Nemours & Co.