Tag: 35% Hydrogen Peroxide

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Hydrogen Peroxide Material Compatibility

35% Hydrogen Peroxide undiluted is an oxidizer and corrosive. Most hot tubs use newer material for seals and gaskets which are compatible with hydrogen peroxide. Although the concentration level is very low after adding 35% Hydrogen Peroxide to a hot tub knowing what materials are best is always good.

Natural rubber is not compatible with hydrogen peroxide. The rubber will break down fairly quickly and the reason “eye droppers”  should not be used to dispense 35% Hydrogen Peroxide.

For Hydrogen Peroxide 30% +.  A “C” rating may work for some industrial application however we do not recommend using materials with a “C” or “D” as to avoid possible unwanted chemical residue from material degradation.

MaterialCompatibility
ABS plasticN/A
Acetal (Delrin®)D – Poor
AluminumA – Excellent
BrassN/A
BronzeB – Good
Buna N (Nitrile)D – Poor
Carbon graphiteC -Not Rec.
Carbon SteelD – Poor
Carpenter 20B – Good
Cast ironB – Good
Ceramic Al203N/A
Ceramic magnetA – Excellent
ChemRaz (FFKM)B – Good
CopperD – Poor
CPVCA – Excellent
EPDMB – Good
EpoxyB – Good
Fluorocarbon (FKM)A – Excellent
Hastelloy-C®A – Excellent
HDPEA -Excellent
Hypalon®D – Poor
KalrezA – Excellent
Kel-F®B – Good
LDPEC – Not Rec.
Natural rubberD – Poor
NeopreneD – Poor
NORYL®A – Excellent
NylonD – Poor
PolycarbonateA – Excellent
Polyetherether Ketone (PEEK)A – Excellent
PolypropyleneB – Good
PolyurethaneB – Good
PPS (Ryton®)A – Excellent
PTFEA – Excellent
PVCA1 – Excellent
PVDF (Kynar®)A – Excellent
SiliconeB – Good
stainless steel – 304B – Good
stainless steel – 316B – Good
TitaniumB – Good
Tygon®B – Good
Viton®A – Excellent

Ratings – Chemical Effect
A – Excellent
B – Good: Minor Effect, slight corrosion, or discoloration.
C – Moderate Effect, not recommended .
D – Severe Effect: Not recommended for any use.

There are many types of elastomer material the list above are some of the more common.

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Does 35% Hydrogen Peroxide Freeze?

35% Food Grade Hydrogen Peroxide Can Freeze

Hydrogen 2o2 35% H2O2 should not freeze in a common home freezer.  If you purchased from someone else and your 35% Hydrogen Peroxide freezes it’s NOT 35% H2O2.

35% Hydrogen Peroxide will freeze at or below a temperature of  -34 C. or -29..2 F.  An average home freezer temperature range is between 32 F and 0 F.

20% Hydrogen Peroxide will freeze at or below -15 C. or 5 F.  5 F. falls in the range of a typical home freezer so if your Hydrogen Peroxide freezes in your freezer its not 35%. Our 35% Hydrogen Peroxide will not freeze in your freezer.

Below is a chart showing hydrogen peroxide freezing and boiling points.

HP freezing point

We are beginning production on a video series demonstrating at what concentration will hydrogen peroxide begin to freeze. We will be using common freezer temperatures.

Using our 35% Hydrogen Peroxide ,  20% Hydrogen Peroxide,  17.5% Hydrogen Peroxide, our 10% Hydrogen Peroxide and a  6%.  Also we will use the concentration I use constantly at home and at work  our wonderful general purpose 3% Hydrogen Peroxide3% Hydrogen Peroxide derived directly from our food grade 35% Food Grade Hydrogen Peroxide.

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35% Food Grade Hydrogen Peroxide

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