• SUMIKAEXCEL PES does not undergo hydrolysis.
• Be careful as it may be corroded by strong acids.
• Among amorphous polymers, SUMIKAEXCEL PES has excellent chemical resistance, but caution is required depending on the conditions of use. It is subject to stress cracking by certain organic chemicals, especially ketones and esters. In addition, it dissolves in highly polar solvents such as dimethyl sulfoxide (DMSO), aromatic amines, nitrobenzene, and certain chlorinated hydrocarbons (dichloromethane, chloroform, etc.).
• It has excellent resistance to aliphatic hydrocarbons, alcohols, some chlorinated hydrocarbons, some aromatic chemicals, oils, and greases, and is not affected by most bleaches and disinfectants when used under normal conditions.
• For practical use, evaluation of actual molded products is required.

Annealing

Residual stress in molded products can be relieved by annealing, which is effective in improving chemical resistance. This can be easily confirmed by immersing the product in toluene or methyl ethyl ketone (MEK).

Heat and water resistance

It does not undergo hydrolysis and can be used in hot water at 160℃ or in steam. However, care must be taken as the properties change due to water absorption.

Table 3-5-1 Resistance in hot water under load (hot water 90°C)

		Stress (MPa)
		13	20	26	33	40
SUMIKAEXCEL PES	4100G	R56.5	R20.2	R15.3	R12.5	-
	4800G	989.6	R65.5	R18.7	-	-
	4101GL30 (GF30%)	-	-	987.3	732.5	R25.5
PPS (GF40%)		-	-	R130	R87	-

Table 3-5-2 Hot water resistance at 140℃ (4100G)

Duration (weeks)	Tensile strength (MPa)	Percentage change	Charpy impact strength (kJ/m2)	Percentage change
Control	81	100	39	100
2	88	108	18	46
7	93	114	14	35
14	92	113	14	34
29	81	100	14	37
42	84	104	15	39

• Steam sterilization at 140℃
  Even if SUMIKAEXCEL PES is steam sterilized at 140℃ for 24 hours, there is no change in the tensile strength.

*4800G, which has a higher molecular weight than 4100G, can withstand harsh hot water conditions.

Chemical resistance

It is resistant to oils such as gasoline and engine oil, greases, and cleaning solvents such as chlorocene and freon. However, it is corroded by polar solvents such as acetone and chloroform, so care must be taken when using them. On the other hand, its stress cracking resistance is the best among amorphous polymers. It is also resistant to alkalis and acids even at high temperatures.

Table 3-5-3 Chemical resistance and stress cracking resistance

Table 3-5-4 Changes in weight and tensile strength when immersed in inorganic chemicals

Chemical Name	Grade	Temperature (℃)	Weight change		Tensile strength change (%)					remarks
			Immersion time	Weight change	Immersion time (days)
			(days)	(%)	14	30	90	180	360
Water	4100G	room temperature	1	0.43	-	-17.7	-16.6	-21.1	-	-
Water	4100G	50	-	-	-	-13.5	-13.1	-17.7	-	-
Water	4100G	100	-	-	7.0	7.4	9.8	9.2	9.5	-
10% hydrochloric acid	4100G	room temperature	180	1.95	-15.6	-14.9	-17.8	-21.1	-	-
Concentrated hydrochloric acid	4100G	room temperature	180	2.19	-	-6.3	-12.2	-21.1	-	-
15% hydrochloric acid	4100G	90	-	-	-	-	-40.0	-49.0	-53.0	Quite a lot of crazes
10% sulfuric acid	4100G	room temperature	180	1.82	-	-13.2	-17.7	-23.4	-	-
50% sulfuric acid	4100G	60	14	-0.39	6.3	-	-	-	-	-
50% sulfuric acid	4101GL30	60	14	-0.20	-	-	-	-	-	-
Concentrated sulfuric acid	4100G	room temperature	-	-	-	-	-	-	-	Dissolution
25% sulfuric acid	4100G	90	-	-	-	-	2.0	3.0	7.0	-
40% sulfuric acid	4100G	60	14	-0.55	-	-	-	-	-	-
40% phosphoric acid
40% sulfuric acid	4101GL30	60	14	-0.37	-	-	-	-	-	-
40% phosphoric acid
10% sulfuric acid	4100G	room temperature	180	2.27	-	-	-	-	-	-
Concentrated Nitric Acid	4100G	room temperature	-	-	-	-	-	-	-	Dissolution
5% nitric acid	4100G	90	-	-	-	-	0.0	-29.0	-24.0	Slightly crazed
10% caustic soda	4100G	room temperature	180	1.79	-	-13.9	-18.2	-22.3	-	-
Saturated Caustic Soda	4100G	room temperature	180	0.82	-	-4.8	-11.0	-14.2	-	-
5% caustic soda	4100G	90	-	-	-	-	3.0	2.0	6.1	-
Saturated potassium chloride	4100G	room temperature	120	1.46	-	-	-	-	-	-
Saturated sodium hypochlorite	4100G	room temperature	180	1.42	-	-9.8	-15.8	-19.6	-	-
25% saturated sodium hypochlorite	4100G	90	-	-	-	-10.0	-9.0	-6.0	-	-
10% ammonium hydroxide	4100G	room temperature	120	1.63	-	-	-	-	-	-
Hydrogen peroxide	4100G	room temperature	120	2.52	-	-9.8	-	-	-	-
Chlorinated bromine water (PH4)	4100G	90	30	0.33	-	-1.0	-	-	-	-
5% Alum	4100G	90	-	-	-	-	-8.0	-11.0	-12.0	Slightly crazed
Sulfur dioxide gas	4100G	room temperature	180	8.49	-	-15.0	-	-34.0	-	-
Nitrogen dioxide	4100G	room temperature	180	1.19	-	-4.5	-	-4.5	-	-
Sulfur hexafluoride	4100G	room temperature	30	-0.11	-	2.4	-	-	-	-
Chlorine	4100G	room temperature	28	0.47	-	-62.8	-	-	-	Cracks occur

Resistant to organic chemicals

Stress cracking resistance

A constant load is applied to a tensile impact test piece (1.6 mm thick), and the condition of the test piece after immersion in each chemical for up to 20 minutes is shown according to the legend.

Table 3-5-5 Stress cracking resistance

	Stress 10MPa						Stress 19MPa
	Polyethersulfone			Poly Sulfone	Poly Carbonate	Modified PPO	Polyethersulfone			Poly Sulfone	Poly Carbonate	Modified PPO
	4100G	4800G	4101GL30	Non-reinforced	Non-reinforced	Non-reinforced	4100G	4800G	4101GL30	Non-reinforced	Non-reinforced	Non-reinforced
Acetone	R1S	R4S	○	R2S	R1S	○	R1S	R3S	○	R2S	R1S	○
Methyl Ethyl Ketone	R1S	R2S	○	R1S	○	R18	R1S	R1S	○	R1S	R5	R20S
Cyclohexanone	R1S	R19S	○	○	○	D	R1S	R5S	○	D	D	D
Benzene	C20	○	○	R1S	R4	D	R2	C20	○	R1S	R3	D
Toluene	○	○	○	R1S	R11	D	R6	C20	○	R1S	R3	D
Xylene	○	○	○	R4S	R15	D	○	○	○	R2S	R11	D
Trichloroethylene	C20	C20	○	D	○	D	R6	R11	○	D	R17	D
1.1.1-Trichloroethane (Chlorocene)	○	○	○	R8S	R3	D	○	○	○	R3S	R1	D
Carbon tetrachloride	○	○	○	SLC20	R6S	D	○	○	○	R3	R3S	D
1.2-Dichloroethane	R1S	R1S	○	D	D	D	R1S	R1S	○	D	D	D
Perchloroethylene	○	○	○	C20	R1S	D	○	○	○	R8	R1S	D
Chloroform	R1S	R1S	○	D	D	D	R1S	R1S	○	D	D	D
Trichlorotrifluoroethane (Freon)	○	○	○	○	○	D	○	○	○	○	○	D
Methanol	○	○	○	○	○	○	○	○	○	○	○	○
Ethanol	○	○	○	○	○	○	○	○	○	○	○	○
n-Butanol	○	○	○	○	○	○	○	○	○	C20	C20	○
Ethylene glycol	○	○	○	○	○	○	○	○	○	○	○	○
2-Ethoxyethanol	C20	SLC20	○	C20	R17	○	C20	C20	○	C20	R10	○
Propane-1,2-diol	○	○	○	○	○	○	○	○	○	○	○	○
Heptane	○	○	○	○	○	○	○	○	○	○	SLC20	R19
Ethyl acetate	R315	C20	○	R3S	○	○	R17S	R7	○	R1S	R4	○
Diethyl Ether	C20	S1.C20	○	C20	R1	○	C20	C20	○	R7	R1	R15
Carbon dioxide	○	○	○	R8S	R1S	D	○	○	○	R5S	R1S	D
Gasoline	○	○	○	○	C20	○	○	○	○	C20	R3	R1
Light oil	○	○	○	○	○	○	○	○	○	○	○	○

(Legend)	○	...The test piece showed no change even after 20 minutes of immersion.	R8	...After 8 minutes of immersion it cracked.
	C20	...After 20 minutes of immersion, crazing occurred.	R2S	...After 2 seconds of immersion it broke.
	SLC20	...After 20 minutes of immersion, slight crazing occurred.	D	...The test piece dissolved.

Solubility

SUMIKAEXCEL PES is a polar polymer, so it dissolves in polar solvents. The solubility of SUMIKAEXCEL PES is important for paint and coating applications and solvent adhesion. Solvents for SUMIKAEXCEL PES include dimethyl sulfoxide, N-dimethylformamide, N-methylpyrrolidone, and dimethylacetamide.

Weight and tensile strength changes due to organic chemicals

Table 3-5-6 shows the weight change when immersed in various organic chemicals. For non-solvents, the weight changes by -0.5 to 2% depending on the immersion temperature and time, but the dimensions do not change. For some solvents, the material generally softens, swells, and its weight increases significantly.

Table 3-5-6 Changes in weight and tensile strength when immersed in organic chemicals

Product name	Grade	temperature (℃)	Weight change		Tensile strength change					remarks
			Immersion time (days)	Weight change (%)	Immersion time (days)
					7	30	90	180	360
25% acetic acid	4100G	90	-	-	-	-	-3.00	-27.00	-42.00	Craze occurs in 360 days
Glacial Acetic Acid		room temperature	30	0.31	-	-	-	-	-	-
5% phenol		room temperature	90	6.66	-29.70	-35.70	-45.80	-	-	-
Anhydrous Hydrazine		room temperature	14	3.50	-	-	-	-	-	softening
Benzene		room temperature	180	1.48	-3.20	-3.10	-8.60	-13.50	-	-
Xylene		room temperature	7	0.49	-	-	-	-	-	-
Heptane		room temperature	180	0.21	-0.80	-1.00	-5.80	-10.00	-	-
Cyclohexane		room temperature	120	0.12	-	-	-	-	-	-
Methanol		room temperature	14	2.09	-	-	-	-	-	-
Ethanol		room temperature	180	1.46	-2.20	-5.00	-13.60	-18.70	-	-
Ethylene glycol		room temperature	120	0.53	-	-	-	-	-	-
Propylene Glycol		100	14	-0.36	-	-	-	-	-	-
Glycerin		150	14	0.06	-	-	-	-	-	-
White Spirit		130	7	-0.51	+21.90	-	-	-	-	Slightly cracked
Ethyl acetate		room temperature	60	10.70	-	-	-	-	-	softening
Amyl Acetate		room temperature	120	-0.08	-	-	-	-	-	-
Diethyl Ether		room temperature	120	2.91	-	-	-	-	-	-
Carbon tetrachloride		room temperature	180	0.44	-0.40	-0.30	-6.40	-11.30	-	-
1.1.1-Trichloroethane (Chlorocene)		room temperature	120	1.01	-10.20	-19.20	-32.80	-51.60	-	-
Genkleine		room temperature	120	1.13	-	-	-	-	-	-
Parkren		room temperature	120	0.78	-	-	-	-	-	-
North Sea Gas		room temperature	180	0.01	-	-0.34	-	0.20	-	-
Ethylene oxide		room temperature	190	7.59	-	-14.00	-	-39.10	-	Cracks occur under a stress of 140kg/ cm2​
Propylene Gas		room temperature	180	0.21	-	-	-	-0.11	-	-

Cleaning Solvent

It is often necessary to remove grease, oil, and release agents from the surface of molded products, especially when painting or gluing. In this case, avoid using cleaning solvents such as acetone and methyl ethyl ketone. The following table shows the effect of cleaning solvents on 4100G.

Table 3-5-7 Effects of cleaning solvents (4100G)

Washing solvent (reflux)	Minutes	Hardness (initial value = 98)	Weight gain (%)
Arklone P	2	98	0
	10	98	0
	30	98	0
Arklone L	2	98	0
	10	98	0
	30	98	0
Genkleine	2	98	0
	10	98	0
	30	98	0
Trinklone A	2	98	0
	10	98	1
	30	98	1
Trinklone N	2	98	1
	10	Cracks appear on the surface	1
	30	Cracks appear on the surface	2
Perchloroethylene	2	98	0
	10	98	0
	30	98	0
Methylene chloride	2	98	3
	10	Dissolution
	30	Dissolution

Resistant to oil, gasoline and transmission oil

Table 3-5-8 Weight change in oil and gasoline (4100G)

Environment	Immersion time (days)	Temperature (℃)	Weight change (%)
Linseed oil	180	room temperature	0.63
Deep Frying Oil	2	180	-0.10
Silicone oil (ICI 190)	180	room temperature	0.37
Veedol ATF 3433 (transmission oil)	365	130	0.38
Castrol ATF	90	160	-0.55
Shell Diala Transformer Oil	180	room temperature	0.30
Castrol ATF Solvent flushing oil	90	room temperature	0.50
Duckhamz 20/50 oil	90	160	2.84
Gunk	90	room temperature	0.55
98 octane gasoline	180	room temperature	0.60
3 Star Petrol	90	room temperature	0.20
ASTM II Oil	7	room temperature	0

Figure 3-5-1 Changes in mechanical properties in transmission oil (4100G)

Table 3-5-9 Stress cracking resistance in gasoline (room temperature)

Table 3-5-10 Stress cracking resistance in oil (Vactralite Oil) (100℃)

Table 3-5-11 Stress cracking resistance in turbine oil (160℃)

Table 3-5-12 Effect of oil on mechanical properties (4800G)

Table 3-5-13 Stress cracking resistance when subjected to a certain deformation in various turbine oils (4800G)

Resistant to bleach and sterilizing fluids

SUMIKAEXCEL PES is only slightly affected by most bleaches and sterilizing solutions unless they are highly concentrated. After immersion in a sterilizing solution, if SUMIKAEXCEL PES molded product is to be subsequently sterilized by steam or dry heat, it must be thoroughly washed with water.

Table 3-5-14 Effects of bleach and sterilizing fluids (4100G)