Corrosion Resistance Chart for Pressure Gauge with“PP material Connector”

SJ Gauge
2025-05-08
Knowledge

SJ Gauge: The following is a reference table for the corrosion resistance of pressure gauges with “PP (Polypropylene) material” to different chemicals (Test: Immersion time 6 months).

Polypropylene Corrosion Resistance Chart
Symbol Explanation: ◎: Virtually unaffected △: Visible effects such as discoloration, with some degree of size and weight change. ○: Slight discoloration and weight change, no change in ductility. ×: Sometimes embrittled, swollen, with noticeable changes in appearance, weight, and ductility.
Chemical Name	Concentration (％)	Operating Environment
Chemical Name	Concentration (％)	20°C	60°C
Hydrochloric Acid	2	◎	◎
	10	◎	◎
	30	◎	◎
	36	◎	△
Sulfuric Acid	2	◎	◎
	5	◎	◎
	10	◎	◎
	30	◎	◎
	98	◎	△
Fuming Nitric Acid	–	△	△
Phosphoric Acid	10	◎	○
	30	△	×
	50	△	×
Fuming Nitric Acid	–	△	×
Phosphoric Acid	10	◎	◎
	30	○	○
	85	○	○
Hydrofluoric Acid	55	○	○
Aqua Regia	–	△	△
Hydrofluoric Acid	40	△
Sulfur	–	◎	◎
Caustic Soda	10	◎	◎
	30	◎	◎
	50	◎	◎
Caustic Potash	10	◎	◎
Caustic Potash	50	◎	◎
Ammonium Hydroxide	15	◎	◎
Ammonium Hydroxide	25	◎	◎
Sodium Bisulfite Saturated	Sodium	◎	◎
Copper Sulfate	40g/L	◎	◎
Potassium Sulfide	Saturated	◎	◎
Ammonium Chloride	Saturated	◎	◎
Saltwater	10	◎	◎
Saltwater	100	◎	◎
Calcium Chloride	Saturated	◎	◎
Nickel Chloride	Saturated	◎	◎
Potassium Chlorate	10	◎	◎
Sodium Bicarbonate	Saturated	◎	◎
Soda	Saturated	◎	◎
Sodium Hydrogen Carbonate	Saturated	◎	◎
Hydrogen Peroxide Solution	10	◎	◎
Hydrogen Peroxide Solution	30	△	△
Sodium Hypochlorite Solution	5	◎	◎
Sodium Hypochlorite Solution	10	◎	○
Potassium Permanganate	10	◎
Potassium Dichromate	10	◎
Acetic Acid	10	◎	◎
	30	◎	◎
	50	◎	○
	97	◎
Glacial Acetic Acid	100	○
Lactic Acid	20	◎	◎
Lactic Acid	100	◎	◎
Trichloroacetic Acid	10	◎	◎
Citric Acid	10	◎	◎
Citric Acid	50	◎	◎
Formic Acid	10	◎	◎
	85	◎	◎
	100	◎
Ｏxalic Ａcid	50	◎	○
Benzoic Acid	50	◎	◎
Oleic Acid	50	◎	◎
Salicylic Acid	50	◎	◎
Tartaric Acid	50	◎	◎
Tannic Acid	Saturated	◎	◎
Phenol	50	◎	○
Boric Acid	50	◎	◎
Malic Acid	50	◎	◎
Succinic Acid	50	◎	◎
Cresol	50	◎	○
Ethyl Ｃhloride	40	○	△
Methylene Chloride	40	○	△
Chloroform	40	○	△
Chloroform	100	△	×
Carbon Tetrachloride	40	○	△
Carbon Tetrachloride	100	△	△
o-Dichlorobenzene	40	◎	△
p-Dichlorobenzene	40	◎	△
Tetrachloroethane	40	◎	△
Tetrachloroethylene	40	◎	△
Trichlorethylene Ethane	40	◎	△
Trichloroethylene	40	◎	△
Trichloroethylene	100	△	△
Trichlorobenzene	40	○	△
Dichloroethane	40	○	△
Vinyl Chloride	40	○	△
Hexachlorobenzene	40	○	△
Chlorobenzene	40	○	△
B・H・C	20	◎	◎
Chloroacetic Acid	100	◎	◎
Methanol	100	◎	◎
Ethanol	96	◎	◎
Isopropanol	100	◎	◎
Ethylene Glycol	100	◎	◎
Glycerol	100	◎	◎
n-Butyl Alcohol	100	◎	○
Ethyl Acetate	100	○	○
Butyl Acetate	100	△	△
Acetone	100	△	△
Cyclohexanone	100	△	△
Benzyl Alcohol	100	△	△
Formaldehyde	37	◎	◎
Furfural	100	○	△
Gasoline	100	◎	○
Kerosene	100	○	○
Spindle Oil	100	○	○
Lubricating Oil	100	○	○
Paraffin Wax	100	◎	○
White Oil	100	○	△
Liquid Paraffin	100	○	○
Turpentine	100	△	△
Linseed Oil	100	◎	◎
Olive Oil	100	◎	◎
Petroleum Ether	100	○	○
Castor Oil	100	◎	◎
Wax	100	◎	◎
Lard	100	◎	◎
Benzene	10	◎	○
Benzene	100	○	△
o-Xylene	10	◎	○
o-Xylene	100	○	△
p-Xylene	10	◎	○
p-Xylene	100	○	△
m-Xylene	100	○	△
Toluene	100	○	△
Ethyl Ether	100	○	△
Dioxane	100	○	△
Decahydronaphthalene	100	○	○
Tetrahydrofuran	100	△	△
Tetralin	100	△	△
Nitrobenzene	100	◎	◎
Aniline	100	◎	◎
Nitrobenzene	100	◎
Naphthalene	–	◎