|  EXHIBIT      10.7.2                                       |
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|  Second      Amendment to                                  |
|  Second      Amended and Restated Revolving Loan Agreement |
|                                                            |

|   | 2. | Paragraph      2.1 of the Loan Agreement is hereby deleted and replaced as      follows: |
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|   | 2.1 | Advances |
|--------|-----|----------|

|   | (i) | The      TDCC Reference Rate minus 12.5 basis points;and |
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|   | (ii) | The      maximum rate allowable by law. |
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|   | 4. | Lender      and Borrower expressly confirm that all amounts previously loaned by      Lender to Borrower pursuant to the Loan Agreement (including those loaned      in excess of the prior Commitment of Four Billion U.S. Dollars      ($4,000,000,000) are deemed loanedhereunder. |
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|   | 5. | No Other Amendment or      Waiver. Except as expressly amended by this Amendment, the Loan      Agreement remains in full force and effect in accordance with its      terms. |
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|   | 6. | Execution in      Counterparts. This Amendment may be executed in any number of      counterparts, each of which when so executed will be deemed to be an      original and all of which taken together will constitute one and the same      agreement.  Signature pages may be detached from multiple      separate counterparts and attached to a single counterpart so that all      signature pages are attached to the same  document. |
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|   | 7. | Governing      Law.  This Amendment and the rights and obligations of      the parties to this Amendment will be governed by and construed and      interpreted in accordance with the laws of the State of New      York. |
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| THE      DOW CHEMICAL COMPANY |   | UNION      CARBIDE CORPORATION |
|-------------------------------|--------|--------------------------------|

| By:    | /s/      ANDREAS UNTERSTE                                            |   | By:    | /s/      EUDIO GIL                                              |
|--------|----------------------------------------------------------------------|--------|--------|-----------------------------------------------------------------|
| Name:  |      Andreas      Unterste                  |   | Name:  |      Eudio      Gil                    |
| Title: |      Director      of Financial Operations, |   | Title: |      Chief      Financial Officer,     |
|   |      Compliance      and Technology         |   |   |      Vice      President and Treasurer |

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