Fight Coronavirus, Start by Practicing Hand Hygiene

hand-hygiene-coronavirus-sanitizer

The recent coronavirus outbreak has sparked fear and people are finding ways to protect themselves. So, what exactly are the measures that work? Medical experts urge the public to practice hand hygiene and those that are sick to wear a mask. For healthy individuals, clean hands are far more effective in keeping the virus away compared to wearing masks.

Why Is It Important to Maintain Hand Hygiene?

Importance of hand hygiene

As the hands are a significant medium for pathogen transfer, practicing hand hygiene is a lifetime habit to stay healthy. The spread of coronavirus is now an international concern and every individual should do their part to minimize it’s transmission rate.

Effective Hand Hygiene Practice

Dr Kalisvar Marimuthu, senior infectious disease consultant at the National Centre for Infectious Diseases (NCID) mentioned that the best way to keep hands clean is to wash them with soap. However, in the occasion where soap and water are not available, hand sanitizers with at least 60% of alcohol is an alternative.  For people that uses wet wipes, it is crucial to ensure that the wipes consist of at least 40% of alcohol for effective cleaning.

High Demand for Hand Hygiene Products

Because of the current outbreak of coronavirus, hand sanitizers are in high demand and are sold out in majority of the stores. There will be recurring and emerging diseases in the future and it is important for manufacturers to create sufficient amounts of products with the effective dosage of anti-bacterial component. One problem that consumers face is that these products are drying to the skin. So, to encourage frequent hand washing and proper hand hygiene, companies should offer products that are mild yet effective.

Formulation Guide: Mild Hand Wash

Phase Material Function INCI Name Supplier % W/W
A EDTA Chelating Agent Tetrasodium Glutamate Diacetate 0.1
Glycerin Emollient Glycerin 3
Propylene Glycol Emollient Propylene Glycol 1.5
Water Solvent Water 64.2
B Maha CAB 35 Main Surfactant Cocamidopropyl Betaine Maha Chemicals 15
WQ1200LG Secondary Surfactant Lauryl Glucoside Maha Chemicals 10
Eversoft ACS 30  Co-Surfactant Sodium Cocoyl Alaninate Sino Lion 5
C Troycare BD55 Preservative DMDM Hydantoin Troy 0.5
D NaCl Thickener Sodium Chloride 0.7
E Citric Acid pH Adjuster Citric Acid qs

Procedures

  1. Predisperse phase A in room temperature
  2. Add phase B to phase A and mix until homogeneous
  3. Add phase C & D step by step while mixing
  4. Adjust pH with citric acid solution until pH 6-7

End Product Appearance

Appearance Clear viscous liquid
pH 6.60
Viscosity, cps 3720 (25℃, Brookfield RVT, 12rpm, 3#spindle)

Formulation Guide : Hand Sanitizer

Phase Material INCI Name Supplier % W/W
A Ethanol (95%) Ethanol (95%) 65
Deionized Water Deionized Water 30.54
Aloe Vera Extract Aloe Barbadensis Leaf Extract TEN 2
SuperGel™CE Carbomer Sino Lion 0.6
B AMP-ULTRA PC 2000 2-amino-2-methyl-1-propanol ANGUS 0.36
C Sinopol 25 Polysorbate 20 Sino Japan 1.2
D Fragrance Fragrance 0.3

Procedures

  1. Disperse Carbomer into phase A and stir to mix well
  2. Neutralize with phase B under agitation
  3. Add Phase C under agitation
  4. Add phase D under agitation, and then obtain the product.

End Product Appearance

Appearance Clear gel
pH 6.0-6.5
Viscosity, cps 13000~18000Pa.s (25℃, Brookfield RVT, 20rpm, 6#spindle)

Carbomer Shortage? Use CELQUAT® SC-230M or Maha Flow 100 Instead!
Formulation Guide : Hand Sanitizer with CELQUAT® SC-230M

Phase Material INCI Name Supplier % W/W
A CELQUAT SC-230M polymer Polyquaternium-10  AkzoNobel Global Personal Care 2.00
Deionized Water Water (Aqua)  31.75
SD Alcohol 40-A Denatured Alcohol 65.00
Glycerin Glycerin 1.00
Fragrance Fragrance 0.25

Procedures

  1. Add CELQUAT SC-230M polymer to the deionized water and half of the denatured alcohol. Mix, using moderate agitation, until solution thickens.
  2. Add the remaining amount of denatured alcohol and increase the level of agitation to high. Mix until homogeneous.
  3. Pre-mix glycerin and fragrance. Add to the batch and mix until homogeneous.

End Product Appearance

Appearance Clear gel
pH 6.5-7.0
Viscosity, cps 8,500 – 12,500 cps (RVTD, Spindle 4, 20 rpm)

Formulation Guide : Hand Sanitizer with Maha Flow 100

Phase Material INCI Name Supplier % W/W
A Deionized Water Water (Aqua)  q.s. to 100.00
Ethanol Ethanol 62.00
Maha Flow 100 Acrylates/Beheneth-25 Methacrylate Copolymer Maha Chemicals 6.40
NaOH (10% w/w) Sodium Hydroxide q.s.
Glycerin Glycerin Maha Chemicals 1.00
Fragrance Fragrance 0.25

Procedures

  1. Mix water with Maha Flow 100 and agitate at 500 rpm for more than 20 minutes.
  2. Add ethanol during agitation.
  3. Add NaOH drop by drop slowly until desired pH is achieved.
  4. Add Glycerin and fragrance

End Product Appearance

Appearance Clear gel
pH 6.5-7.0
Viscosity, cps 2600 mPa.s

Solutions for Alcohol Shortage
Formulation Guide: Water-Based Hand Sanitizers

Phase Material INCI Name Supplier % W/W % W/W
A Propylene Glycol Propylene Glycol 5.00 5.00
Glycerin Glycerin 5.00 5.00
Deionized Water Water q.s. to 100.00 q.s. to 100.00
B K-CARE CHG Chlorohexidine Gluconate Maha Chemicals 4.00
K-CARE BKC80 Benzalkonium Chloride Maha Chemicals 0.1625
C Aloe Vera Extract BG Aloe Barbadensis Extract, Butylene Glycol TEN 1.00 1.00
Chamomile Extract BG Chamomille Recutita (matricaria) Flower Extract, Butylene Glycol TEN 1.00 1.00
D AMP ULTRA PC 2000 2-amino-2-methyl-1-propanol Angus q.s. q.s.

Procedures

  1. Predisperse phase A in room temperature
  2. Add phase B and phase C while mixing
  3. Adjust pH to 6 – 7.5 with AMP Ultra PC 2000 if necessary

End Product Appearance

Appearance Clear – Slightly hazy liquid
pH 7.0-7.5

A clean hand is a caring hand

Encourage consumers to practice hand hygiene now!! Contact us for free samples!!

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