**EXHIBIT        21.1**

**PRINCIPAL        CONSOLIDATED SUBSIDIARIES AS OF DECEMBER 31, 2005**

| **Argentina**                                                     |   |  **Germany**                                                    |
|-------------------------------------------------------------------|--------|----------------------------------------------------------------------|
| Hercules                  Argentina S.A.                          |   | Abieta                  Chemie GmbH (1)                              |
| **Australia**                                                     |   | FiberVisions                  GmbH                                   |
| Little                  H Pty Ltd.                                |   |  Hercules                  Deutschland GmbH                     |
|  **Austria**                                                 |   | Hercules                  GmbH                                       |
| Hercules                  Austria GmbH                            |   |  **Hong                  Kong**                                 |
|  **Bahamas**                                                 |   | ES                  FiberVisions Hong Kong Ltd.                      |
| Hercules                  International Trade Corporation Limited |   |  Hercules                  China Limited                        |
|  **Belgium**                                                 |   | **India**                                                            |
| Hercules                  Beringen B.V.B.A.                       |   |  Hercules                  Industrial Chemicals Private Limited |
| Hercules                  Doel B.V.B.A.                           |   | **Indonesia**                                                        |
| Hercules                  Europe B.V.B.A.                         |   |  P.T.                  Hercules Chemicals Indonesia             |
| Hercules                  Holding B.V./B.V.B.A.                   |   |  **Italy**                                                      |
|  **Bermuda**                                                 |   |  Hercules                  Italia S.p.A.                        |
| Curtis                  Bay Insurance Co. Ltd.                    |   | **Japan**                                                            |
|  **Brazil**                                                  |   |  Hercules                  Japan Ltd.                           |
| Hercules                  do Brasil Produtos Quimicos Ltda.       |   | **Korea**                                                            |
|  **British                  Virgin Islands**                 |   |  Hercules                  Korea Chemical Co. Ltd.              |
| Ever                  Success Overseas Limited                    |   | **Liechtenstein**                                                    |
|  **Canada**                                                  |   | Organa                  Trust, Registered                            |
| Hercules                  Canada Inc.                             |   |  **Luxembourg**                                                 |
|  **Chile**                                                   |   | Hercules                  Investments S.a.r.l.                       |
| Hercules                  Chile Limitada                          |   | **Mexico**                                                           |
|  **China**                                                   |   | Hercules                  Mexico, S.A. de C.V.                       |
| FiberVisions                  (China) Textile Products Ltd.       |   | Hercules                  Services Mexico S.A. de C.V.               |
| Hercules                  Chemicals (Jiangmen) Company Limited    |   | **The                  Netherlands**                                 |
| Hercules                  Trading (Shanghai) Company Ltd.         |   |  Aqualon                  France B.V.                           |
| Shanghai                  Hercules Chemicals Co., Ltd. (1)        |   | Hercules                  B.V.                                       |
|  **Czech                  (Republic)**                       |   |  Hercules                  Chemical B.V.                        |
| Hercules                  CZ s.r.o.                               |   | Hercules                  Holding Specialty Materials B.V.           |
| **Denmark**                                                       |   |  Hercules                  International Ltd. LLC               |
| ES                  FiberVisions ApS                              |   | **Norway**                                                           |
| FiberVisions                  (China) A/S                         |   |  Hercules                  Norway AS                            |
| ES                  FiberVisions Holding ApS                      |   | **Peru**                                                             |
| FiberVisions,                  A/S                                |   |  Hercules                  Peru S.R.L.                          |
| Hercules                  Investments ApS                         |   | **Poland**                                                           |
|  **Finland**                                                 |   |  Hercules                  Polska Sp. z.o.o.                    |
| Hercules                  Finland OY                              |   | **Portugal**                                                         |
|  **France**                                                  |   |  Misan                  Portuguesa Lda.                         |
| Aqualon                  France B.V.                              |   | **Russia**                                                           |
| Hercules                  SA                                      |   |  Hercules                  Russia L.L.C.                        |
|                                                              |   | **Singapore**                                                        |
|                                                              |   |  Hercules                  Chemical Solutions Pte Ltd.          |

**EXHIBIT        21.1**

**PRINCIPAL        CONSOLIDATED SUBSIDIARIES AS OF DECEMBER 31, 2005**

|  **South                  Africa**                                      |   |
|------------------------------------------------------------------------------|--------|
|  Hercules                  Chemicals South Africa (Proprietary) Limited |   |
|  **Spain**                                                              |   |
|  Hercules                  Quimica S.A.                                 |   |
|  **Sweden**                                                             |   |
|  Hercules                  AB                                           |   |
|  **Switzerland**                                                        |   |
|  Hercules                  International GmbH                           |   |
|  **Taiwan**                                                             |   |
| Hercules                  Chemicals (Taiwan) Co., Ltd.                       |   |
|  **United                  Kingdom**                                    |   |
| Hercules                  Holding II Ltd.                                    |   |
| Hercules                  Limited                                            |   |
|  **United                  States**                                     |   |
| Aqualon                  Company, Delaware                                   |   |
| Athens                  Holdings Inc., Delaware                              |   |
| Covington                  Holdings Inc., Delaware                           |   |
| East                  Bay Realty Services, Inc., Delaware                    |   |
| FiberVisions                  Incorporated, Delaware                         |   |
| FiberVisions,                  L.L.C., Delaware                              |   |
| FiberVisions                  L.P., Delaware                                 |   |
| FiberVisions                  Products, Inc., Georgia                        |   |
| Hercules                  Country Club, Inc.                                 |   |
| Hercules                  Euro Holdings, L.L.C., Delaware                    |   |
| Hercules                  Finance Company, Delaware                          |   |
| Hercules                  Flavor, Inc., Delaware                             |   |
| Hercules                  Hydrocarbon Holdings, Inc.                         |   |
| Hercules                  Paper Holdings, Inc.                               |   |
| WSP,                  Inc., Delaware                                         |   |
|  **Virgin                  Islands**                                    |   |
| Ever                  Success Overseas Limited (British)                     |   |
| Hercules                  Islands Corporation (U.S.) (1)                |   |

*(1)*

*        This        entity is owned in part by Hercules with the remaining interest held by a        third        party*