ETHANOX® Fuel AntioxidantsPOWERFUL PRODUCTS TO ENHANCE PERFORMANCE AND STABILITY

SI Group’s portfolio of ETHANOX® fuel antioxidants maximizes the storage life of many fuels and protects fuel systems by increasing resistance to oxidation and helping to control insoluble gum formation. By using ETHANOX fuel antioxidants, petroleum and biofuel refiners and marketers can meet stringent government regulations and OEM standards—including those requiring reduced emissions—as well as ASTM, civilian, and military specifications for aviation fuels. And, to support the expanding use of biodiesel fuels worldwide, SI Group offers an array of biodiesel antioxidants that stabilize fuels and prevent deposit formation in diesel engines.

Our broad ETHANOX antioxidant portfolio includes products tailored for countless applications, both civilian and military. We make antioxidants for virtually every petroleum-based fuel in use today, from aviation gasoline and turbine fuels to diesel oils and generator fuels. Dependable ETHANOX products are also available in synergistic blends and dilutions to suit essentially every need, whether you’re a refiner or a formulator.

Antioxidant Blends

SI Group provides ETHANOX fuel antioxidants in a variety of blends and dilutions. We offer blends of phenolic and aminic antioxidants as well as blends of multiple antioxidants with metal deactivators. ETHANOX 4737R fuel antioxidant is a dilution of ETHANOX 4701 (a high purity 2,6-di-tert-butylphenol) in a high flash aromatic solvent and provides all benefits of the full-strength product, but may be used where low-temperature handling is required. The combination of phenolic and aminic antioxidants, such as in ETHANOX 4740R, offers improved stabilization synergies (see Figure 1).

Figure 1. ETHANOX 4740R’s performance approximates that of PDA, with a lower comparative cost. ETHANOX 4733 is perfect for some applications, with a much lower cost profile.

D5

25

Ind

ucti

on P

erio

d (m

ins)

Antioxidant Treat Rate (ppm)0 10 20 25

ETHANOX4733

500

600

400

300

200

100

5 15

PDA

ETHANOX 4740R

Military-qualified Products and ASTM Approvals

Product Name Description

Composition and Properties Applications Approvals for Turbine Fuel Oils (Aviation)Approvals for Aviation Gasoline

Activ

ity

Com

posi

tion

Pour

(PP)

or F

reez

ing

(FP)

Po

int,

°C

Flas

h Po

int (

PMCC

), °C

Gaso

line

(Mot

or a

nd

Avia

tion)

Turb

ine

Fuel

s (A

viat

ion)

Dies

el F

uel O

ils

Elec

trica

l Ins

ulat

ing

Oils

Biod

iese

l

MIL

-PRF

-168

84

MIL

-DTL

-255

24

MIL

-DTL

-382

19 (J

P-7)

MIL

-DTL

-562

4 (JP

-4/JP

-5, F

-40/

F-44

)

MIL

-DTL

-831

33

(JP-8

, JP-

8+10

0, F

-34,

F-

35, F

-37)

MIL

-P-2

5576

MIL

-DTL

-871

07 (J

P-10

)

MIL

-PRF

-702

4

(Typ

e I,

II, II

I)

DEF

STAN

91-

091

(Je

t A-1

, F-3

5, A

VTUR

)

DEF

STAN

91-

88 (F

-40)

(D

ERD

2454

)

IATA

(Jet

A-1

)

DEF

STAN

91-

87

(F-3

4, A

VTUR

/FSI

I)

DEF

STAN

91-

86 (F

-44)

CGSB

-3.2

4

(F-3

4, F

-37,

F-3

4)

CGSB

-3.2

3 (Je

t A, J

et A

-1)

ASTM

D66

15 (J

et B

)

ASTM

D16

55

(Jet A

, or J

et A

-1)

DEF

STAN

91-

90

(DER

D 24

85)

ASTM

D91

0

ASTM

D62

27(G

rade

82

Unle

aded

)

Phenolics

ETHANOX 4701 Sterically hindered phenolic 100 - 36 (FP) >110 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

ETHANOX 4737R ETHANOX 4701 in a high flash point solvent 70 70/30 -45 max (PP) >95 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

ETHANOX 4733 Blend of butylated phenols 100 - 19 max (FP) >93.4 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

TBX Alkylated phenolic 100 - 21-23 (FP) 111 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

Antioxidant blends

ETHANOX 4740R ETHANOX 4701/PDA blend 100 50/50 -39 (PP) >93.9 ■ ■ ■ ■ ■ ■

ETHANOX 4760R ETHANOX 4701/PDA/Metal deactivator blend 100 - -39 (PP) 101 ■ ■ ■ ■

Pyrolysis Gasoline Stabilization

Pyrolysis gasoline (Pygas) is a complex mixture of highly unsaturated hydrocarbons (C5s to C12s) resulting from the high-temperature cracking of various hydrocarbon feedstocks in olefin plants. Pygas is important to the production of BTX (benzene, toluene, xylene), a process usually yielding a fuel stream that can be sent to the gasoline pool. However, both the pygas and the gasoline stream are very unstable due to the high concentration of aromatics and olefins. ETHANOX 4740R is particularly effective stabilizer for this type of gasoline stream.

Fuel Stabilization

SI Group’s ETHANOX antioxidants ensure optimal stability for a wide range of fuels. Our portfolio includes:• ETHANOX 4701 is the primary antioxidant

recommended for jet fuels as well as gasoline blend components and finished gasoline to meet ASTM, civilian, and military specifications.

• ETHANOX 4737R fuel antioxidant is a TTBP-free dilution of ETHANOX 4701 fuel antioxidant in a high flash aromatic solvent. It contains less than 1% of Naphthalene, making it a safer choice for workers and the environment. The product is specifically designed for use where low-temperature handling is required.

• ETHANOX 4733 controls the formation of gum and peroxides without contributing to fuel system deposits. It meets leading MIL specifications for aviation fuels and is available as a neat liquid.

• TBX fuel antioxidant helps manage free-radical reactions in gasoline and jet fuels to meet fuel stability and quality specifications.

• ETHANOX 4740R, an economical phenolic/aminic antioxidant blend, inhibits gum formation and lowers the mercaptan content in gasoline blending streams, fully blended gasoline, and biodiesel.

• ETHANOX 4760R, a phenolic/aminic/metal deactivator antioxidant blend, extends Rancimat values in a broad range of biodiesel, including metal-contaminated biodiesel and biodiesel produced from multiple feedstocks.

Military-qualified Products and ASTM Approvals

Product Name Description

Composition and Properties Applications Approvals for Turbine Fuel Oils (Aviation)Approvals for Aviation Gasoline

Activ

ity

Com

posi

tion

Pour

(PP)

or F

reez

ing

(FP)

Po

int,

°C

Flas

h Po

int (

PMCC

), °C

Gaso

line

(Mot

or a

nd

Avia

tion)

Turb

ine

Fuel

s (A

viat

ion)

Dies

el F

uel O

ils

Elec

trica

l Ins

ulat

ing

Oils

Biod

iese

l

MIL

-PRF

-168

84

MIL

-DTL

-255

24

MIL

-DTL

-382

19 (J

P-7)

MIL

-DTL

-562

4 (JP

-4/JP

-5, F

-40/

F-44

)

MIL

-DTL

-831

33

(JP-8

, JP-

8+10

0, F

-34,

F-

35, F

-37)

MIL

-P-2

5576

MIL

-DTL

-871

07 (J

P-10

)

MIL

-PRF

-702

4

(Typ

e I,

II, II

I)

DEF

STAN

91-

091

(Je

t A-1

, F-3

5, A

VTUR

)

DEF

STAN

91-

88 (F

-40)

(D

ERD

2454

)

IATA

(Jet

A-1

)

DEF

STAN

91-

87

(F-3

4, A

VTUR

/FSI

I)

DEF

STAN

91-

86 (F

-44)

CGSB

-3.2

4

(F-3

4, F

-37,

F-3

4)

CGSB

-3.2

3 (Je

t A, J

et A

-1)

ASTM

D66

15 (J

et B

)

ASTM

D16

55

(Jet A

, or J

et A

-1)

DEF

STAN

91-

90

(DER

D 24

85)

ASTM

D91

0

ASTM

D62

27(G

rade

82

Unle

aded

)

Phenolics

ETHANOX 4701 Sterically hindered phenolic 100 - 36 (FP) >110 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

ETHANOX 4737R ETHANOX 4701 in a high flash point solvent 70 70/30 -45 max (PP) >95 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

ETHANOX 4733 Blend of butylated phenols 100 - 19 max (FP) >93.4 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

TBX Alkylated phenolic 100 - 21-23 (FP) 111 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

Antioxidant blends

ETHANOX 4740R ETHANOX 4701/PDA blend 100 50/50 -39 (PP) >93.9 ■ ■ ■ ■ ■ ■

ETHANOX 4760R ETHANOX 4701/PDA/Metal deactivator blend 100 - -39 (PP) 101 ■ ■ ■ ■

SI Group ETHANOX® fuel antioxidants maximize fuel storage life and protect fuel systems, while helping refiners and marketers meet rigorous fuel regulations, standards and specifications. Choosing ETHANOX products helps you make and sell top-quality

petroleum and biofuel products confidently and efficiently. To learn more about our ETHANOX antioxidant line, please contact your nearest SI Group sales representative.

What This Means for You

UT05614 R8 (07/19)

The information presented herein is believed to be accurate and reliable, but is presented without guarantee or responsibility on the part of SI Group, Inc. and its subsidiaries to ensure the accuracy or reliability of the information. It is the responsibility of the user to comply with all applicable laws and regulations and to provide for a safe workplace. The user should consider all information contained herein only as a guide, and should take precautions that the user considers necessary or prudent to promote a safe work environment, such as considering all applicable health and safety hazards, developing safe work practice procedures and properly instructing employees. Further, nothing contained herein shall be taken as an inducement or recommendation to manufacture or use any of the materials or processes mentioned herein in violation of existing or pending patents.ETHANOX is a trademark of SI Group, Inc..