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

PhaseMaterialFunctionINCI NameSupplier% W/W
AEDTAChelating AgentTetrasodium Glutamate Diacetate0.1
GlycerinEmollientGlycerin3
Propylene GlycolEmollientPropylene Glycol1.5
WaterSolventWater64.2
BMaha CAB 35Main SurfactantCocamidopropyl BetaineMaha Chemicals15
WQ1200LGSecondary SurfactantLauryl GlucosideMaha Chemicals10
Eversoft ACS 30 Co-SurfactantSodium Cocoyl AlaninateSino Lion5
CTroycare BD55PreservativeDMDM HydantoinTroy0.5
DNaClThickenerSodium Chloride0.7
ECitric AcidpH AdjusterCitric Acidqs

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

AppearanceClear viscous liquid
pH6.60
Viscosity, cps3720 (25℃, Brookfield RVT, 12rpm, 3#spindle)

Formulation Guide : Hand Sanitizer

PhaseMaterialINCI NameSupplier% W/W
AEthanol (95%)Ethanol (95%)65
Deionized WaterDeionized Water30.54
Aloe Vera ExtractAloe Barbadensis Leaf ExtractTEN2
SuperGel™CECarbomerSino Lion0.6
BAMP-ULTRA PC 20002-amino-2-methyl-1-propanolANGUS0.36
CSinopol 25Polysorbate 20Sino Japan1.2
DFragranceFragrance0.3

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

AppearanceClear gel
pH6.0-6.5
Viscosity, cps13000~18000Pa.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

PhaseMaterialINCI NameSupplier% W/W
ACELQUAT SC-230M polymerPolyquaternium-10 AkzoNobel Global Personal Care2.00
Deionized WaterWater (Aqua) 31.75
SD Alcohol 40-ADenatured Alcohol65.00
GlycerinGlycerin1.00
FragranceFragrance0.25

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

AppearanceClear gel
pH6.5-7.0
Viscosity, cps8,500 – 12,500 cps (RVTD, Spindle 4, 20 rpm)

Formulation Guide : Hand Sanitizer with Maha Flow 100

PhaseMaterialINCI NameSupplier% W/W
ADeionized WaterWater (Aqua) q.s. to 100.00
EthanolEthanol62.00
Maha Flow 100Acrylates/Beheneth-25 Methacrylate CopolymerMaha Chemicals6.40
NaOH (10% w/w)Sodium Hydroxideq.s.
GlycerinGlycerinMaha Chemicals1.00
FragranceFragrance0.25

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

AppearanceClear gel
pH6.5-7.0
Viscosity, cps2600 mPa.s

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

PhaseMaterialINCI NameSupplier% W/W% W/W
APropylene GlycolPropylene Glycol5.005.00
GlycerinGlycerin5.005.00
Deionized WaterWaterq.s. to 100.00q.s. to 100.00
BK-CARE CHGChlorohexidine GluconateMaha Chemicals4.00
K-CARE BKC80Benzalkonium ChlorideMaha Chemicals0.1625
CAloe Vera Extract BGAloe Barbadensis Extract, Butylene GlycolTEN1.001.00
Chamomile Extract BGChamomille Recutita (matricaria) Flower Extract, Butylene GlycolTEN1.001.00
DAMP ULTRA PC 20002-amino-2-methyl-1-propanolAngusq.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

AppearanceClear – Slightly hazy liquid
pH7.0-7.5

A clean hand is a caring hand

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

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