### Cover Letter

September 14, 2012 {XXX}

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### X 318162 Sanitized - CAS-IES Report_Redacted.pdf XXX 

### X See Attachment 003 (Sanitized - Chemical Structures.docx)

Sanitized - Chemical Structures.docx
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Aromatic hydrocarbon mixture 

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X Feedstock for fractionation process. XXX X XXX X XXX XXX XXX XXX X

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Page 14 SANITIZED SUBMISSIONSee Attachment 002 (Sanitized - Manufacture Process.pptx)

Sanitized - Manufacture Process.pptx
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See Attachment 004 (Customer process flow_Sanitized.pdf)

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Page 18 SANITIZED SUBMISSIONP10SB1(a)(4)1 Part II, Section B, 1(a)(4). Operation Site Locations

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Page 19 SANITIZED SUBMISSIONCustomer worker exposure_Sanitized.pdf

Page 20 SANITIZED SUBMISSIONPage 21 SANITIZED SUBMISSION001 Sanitized - CAS-IES Report Sanitized - CAS-IES Report_Redacted.pdf Pt.I, Sec.B, 1c. 2 002 Sanitized - Manufacture Process Sanitized - Manufacture Process.pptx Pt.2, Sec.A, 1d. 1 003 Sanitized - Chemical Structures Sanitized - Chemical Structures.docx Pt.I, Sec.B, 1e. 1 004 Sanitized Customer operation Customer process flow_Sanitized.pdf Pt.2, Sec.B, 1a. 1 005 Sanitized worker exposure Customer worker exposure_Sanitized.pdf Pt.2, Sec.B, End 1 006 Sanitized Phys-Chem Properties (part 1) Phys Chem Properties (1 of 2)_Sanitized.pdf 26 007 Sanitized Phys-Chem Propeties (part 2) Phys Chem Properties (2 of 2)_Sanitized.pdf 11 008 Sanitized Acute Eye Irritation Rabbits OECD 405 Acute Eye Irritation Rabbits_Sanitized.pdf 6 009 Sanitized Acute Skin Irritation Rabbits OECD 404 Acute Skin Irritation Rabbits_Sanitized.pdf 6 010 Sanitized Acute Inhalation Rats Acute Inhalation Rats_Sanitized.pdf 5 011 Sanitized Acute Oral Rats Acute Oral LD50 Rats_Sanitized.pdf 9 012 Sanitized Ecotox - Acute Algae OECD 201 Ecotoxicity_Acute Algae Growth 43 013 Sanitized Ecotox - Amend 1 to OECD 201 test report Ecotoxicity_Acute Algae_OECD 201 Amend 1_Sanitized.pdf 6 014 Sanitized Ecotox Acute Daphnia OECD 202 Ecotoxicity_Acute Daphnia_OECD 35 015 Sanitized Ecotox Amend to OECD 202 test Ecotoxicity_Acute 6 016 Sanitized Ecotox - Acute Bacteria OECD 209 Ecotoxicity_Acute Bacteria_OECD 22 017 Sanitized Ecotox- Acute Fish OECD 203 Ecotoxicity_Acute Fish_OECD 203_Sanitized.pdf 47 018 Sanitized Mutagenicity Ames Test Mutagenicity_AMES Test_Sanitized.pdf 30 019 Sanitized MSDS MSDS (US)_Sanitized.pdf 9

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### ATTACHMENT HEADER SHEET
Attachment Number 001 Attachment Name Sanitized - CAS-IES Report 

### Associated PMN Section Number

Pt.I, Sec.B, 1c. Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 002 Attachment Name Sanitized - Manufacture Process 

### Associated PMN Section Number

Pt.2, Sec.A, 1d. Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 003 Attachment Name Sanitized - Chemical Structures 

### Associated PMN Section Number

Pt.I, Sec.B, 1e. Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 004 Attachment Name Sanitized Customer operation 

### Associated PMN Section Number

Pt.2, Sec.B, 1a. Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 005 Attachment Name Sanitized worker exposure 

### Associated PMN Section Number

Pt.2, Sec.B, End Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 006 Attachment Name Sanitized Phys-Chem Properties (part 1) 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 007 Attachment Name Sanitized Phys-Chem Propeties (part 2) 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 008 Attachment Name Sanitized Acute Eye Irritation Rabbits OECD 405 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 009 Attachment Name Sanitized Acute Skin Irritation Rabbits OECD 404 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 010 Attachment Name Sanitized Acute Inhalation Rats 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 011 Attachment Name Sanitized Acute Oral Rats 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 012 Attachment Name Sanitized Ecotox - Acute Algae OECD 201 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 013 Attachment Name Sanitized Ecotox - Amend 1 to OECD 201 test report 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 014 Attachment Name Sanitized Ecotox Acute Daphnia OECD 202 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 015 Attachment Name Sanitized Ecotox Amend to OECD 202 test report 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 016 Attachment Name Sanitized Ecotox - Acute Bacteria OECD 209 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 017 Attachment Name Sanitized Ecotox- Acute Fish OECD 203 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 018 Attachment Name Sanitized Mutagenicity Ames Test 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147

### ATTACHMENT HEADER SHEET
Attachment Number 019 Attachment Name Sanitized MSDS 

### Associated PMN Section Number

N/A Does not contain CBI 

### Report Number PMNX120914942637147