Dupont Fourth Quarter 2006 Earnings Supplemental Information

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January 23, 2007

DuPont Fourth Quarter 2006 Earnings Supplemental Information

Contents:

Segment Details Commentary on business results in the quarter

DuPont Highlights Summary of news highlights from the quarter

DuPont IR Note

January 23, 2007

Fourth Quarter 2006 Segment Details

All commentary is based on year-over-year comparisons, unless otherwise noted. All earnings commentary is based on pretax operating income (PTOI) and excludes significant items.

DUPONT AGRICULTURE & NUTRITION • Pioneer 4Q sales were $229 million, up 59%, reflecting higher volume, price and share gains in Brazil, Asia and Africa and the earlier start of 2007 corn season marketing in Europe. • Earnings increased substantially on higher sales. • Two high potential pipeline projects advanced with completed regulatory filings for Optimum™GAT™ and High Oleic soybeans.

• Crop protection sales increased substantially, led by higher insecticides and fungicides sales in the Southern Hemisphere and sulfonyl urea sales to Northern Hemisphere cereals markets. • Earnings increased substantially on higher sales.

• Nutrition & Health sales were essentially unchanged with higher prices offsetting slightly lower volume. Earnings increased on higher prices and effective cost control.

DUPONT COATINGS & COLOR TECHNOLOGIES • Ti02 sales grew substantially on higher volumes as the business re-established pre-Katrina market share. Strong sales in Asia and Europe offset weakness in North America coatings. • Ti02 earnings increased substantially on higher volumes, increased fixed cost productivity and the sale of the Australian Zircon Mineral Rights.

• Refinish sales increased modestly on higher local prices and volume. Earnings increased slightly as higher local prices and currency offset higher variable costs. • Automotive Systems sales decreased moderately as price increases in all regions partly offset the significant volume decrease primarily driven by the reduction in N.A. auto builds. Earnings decreased substantially on lower volume and costs associated with the restructuring plan. • Advanced Coating Solutions sales and earnings increased as higher variable costs were more than offset by pricing, fixed cost control and the sale of a specialty adhesives business.

DUPONT ELECTRONIC & COMMUNICATION TECHNOLOGIES • Electronic Technologies sales grew moderately primarily due to pass through of metals prices and currency gains. Key market segments driving revenue growth included semiconductor fabrication, printed circuit materials and photovoltaics. • Earnings increased modestly on flat sales, excluding the pass through of higher metals prices.

• Fluoroproducts sales were essentially equal to the prior year. Volume gains for high value fluoropolymers and favorable currency were mostly offset by lower local prices for refrigerants. In particular, sales for higher value polymers were strong in Europe and Asia. • Earnings increased substantially as a result of volume and currency gains, partially offset by higher fixed costs for growth investments.

• Imaging sales were essentially equal to the prior year. Volume gains for packaging graphics were offset by lower analog and inkjet sales. • Earnings declined due to higher costs. 2

DUPONT PERFORMANCE MATERIALS • Engineering Polymer sales grew modestly on volume, currency and price gains. Volume growth in Asia and Europe offset softness in North America. Price increased in all regions. • Earnings declined modestly as pricing gains did not offset higher raw material costs.

• Packaging & Industrial Polymers sales grew significantly due to volume, currency and price gains. Sales grew in all regions. • Earnings grew substantially from the hurricane-impacted prior-year quarter due to sales gains and lower raw material and fixed costs.

• Elastomers sales increased significantly due to volume, price and currency gains. • Earnings rose substantially as sales growth more than offset higher raw material costs.

• Polyester films sales were flat reflecting favorable currency that was offset by lower volume and local prices. • Earnings declined as a result of higher raw material costs.

DUPONT SAFETY & PROTECTION • Aramids (Kevlar®/Nomex®) sales increased moderately on higher prices and volumes. • Earnings increased significantly with strength in electrical insulation, emergency response, oil & gas and transportation segments more than offsetting higher variable costs.

• Chemicals sales were up significantly on higher volume. Industrial chemical, excluding hurricane impact, specialty chemical and clean and disinfect segments had volume growth. • Earnings increased substantially on higher sales and lower ingredient costs.

• Nonwovens revenue was down significantly on lower volume. Tyvek® demand was lower due to inventory destocking and softness in US housing and protective apparel markets. Price gains across all Tyvek® business segments partly offset the lower volume. • Nonwovens earnings reflect the inventory destocking and softness in US housing.

• Surfaces sales increased slightly, due to pricing. Volumes were modestly down as gains in European commercial segment were offset by moderately lower volume in the U.S. • Earnings declined substantially with price increases partly offsetting variable cost increases and volume decreases.

• Safety consulting sales were significantly lower. Growth in Europe and Asia partly offset declines in Latin America and US. • Earnings declined substantially on lower revenue.

January 23, 2007

Fourth Quarter 2006 Business Highlights

Putting Our Science to Work:

DuPont Building $30 Million Titanium Tetrachloride Unit -- DuPont announced that it will supply up to 100 million pounds of high purity titanium tetrachloride annually to Allegheny Titanium’s new titanium metal plant in Toole County, Utah. The new facility will make approximately 10,000 tons of titanium metal per year. Allegheny Titanium is a subsidiary of Allegheny Technologies, Inc. DuPont will invest $30 million at its New Johnsonville, Tenn., titanium dioxide plant to install a new purification unit to make titanium tetrachloride.

DuPont Launches Breathable, Metallized Housewrap -- As part of its expanded market-facing sustainability commitments, DuPont has introduced DuPont™ Tyvek® ThermaWrap™ -- a breathable, metallized housewrap designed to enhance the thermal performance of walls. DuPont™ Tyvek® ThermaWrap™ provides all of the additional benefits of a weather resistant barrier. At the same time, it facilitates thermal management by managing radiant heat, helping to protect structures from air and water intrusion and UV rays.

DuPont Surfaces Products Receive GREENGUARD Certification -- The GREENGUARD Environmental Institute (GEI) has designated DuPont™ Corian® solid surfaces, DuPont™ Zodiaq® quartz surfaces, as well as the sealants and adhesives from DuPont Surfaces, as GREENGUARD Indoor Air Quality Certified®. This DuPont portfolio of products provides architects, designers and building professionals with a complete surfacing system to help improve indoor air quality.

DuPont™ Tyvek® AtticWrap™ Launched -- DuPont launched the first breathable roofing membrane to completely seal a home’s building envelope. A cutting-edge innovation, Tyvek® AtticWrap™ is specifically designed for a home’s attic to create a continuously airtight space that prevents air and water intrusion and helps conserve energy.

New DuPont™ Biosecurity Kits Introduced -- DuPont introduced three new biosecurity kits for businesses seeking assistance with reducing the spread of viruses or bacteria. The DuPont™ Personal Biosecurity Kits and the DuPont™ Worksite Biosecurity Kits are now available to other organizations interested in maintaining the well-being of employees and ensuring business continuity in the event of a disease outbreak. The DuPont™ Biosecurity Kit for the Farm is also available.

DuPont Introduces DuPont™ Nomex® Limitedwear for Military -- DuPont™ Nomex® Limtedwear for Military is a lightweight, limited-use garment designed to help protect soldiers from flash fires.

DuPont™ Protera™ Introduced -- DuPont launched Protera™, a new line of inherent flame resistant fabrics specifically engineered to protect against electric arc hazards and meet National Fire Protection Association (NFPA) 70E Category 2 requirements.

DuPont Introduces Premium Interior Air Filters -- DuPont introduced its new line of automotive DuPont™ Premium Interior Air Filters, featuring exclusive filtering technology that cleans the outside air before it enters the cabin of the automobile. DuPont™ Premium Interior Air Filters capture up to 96 percent of fine dust, pollen, allergens and other airborne particles. DuPont™ Premium Interior Air Filters are also available with an added Activated Carbon Layer that reduces unpleasant odors inside the vehicle. The air filters are the latest offering from DuPont Separations Solutions, a growth initiative dedicated to developing and implementing technologies for filtration.

Health Canada Validates DuPont™ BAX® System for Detecting E. coli O157:H7 in Fruits, Vegetables, Dairy and Other Foods -- Health Canada, the federal agency that oversees food safety in Canada, validated protocols for using the BAX® system from DuPont Qualicon to detect E. coli O157:H7 in fruits, vegetables, dairy, meat, animal feed, environmental samples and dry products. This recent approval supplements prior validation of the BAX® system for detecting the pathogen in ground beef and beef trim.

DuPont Soybean Genetic Marker Technology Speeds Yield Enhancement -- A review of historical U.S. soybean yield gains confirms that new molecular breeding tools are accelerating the pace at which farmers can increase the amount of soybeans harvested from an acre. Researchers at Pioneer Hi-Bred International found that yields of Pioneer® brand soybean varieties developed with proprietary genetic markers improved yield three times faster than the U.S. Department of Agriculture (USDA) industry average.

DuPont Achieves Regulatory Milestone for High Oleic Soybean Oil Trait -- DuPont met an important milestone toward the commercialization of its proprietary high oleic soybean oil trait by completing its U.S. regulatory submissions for approval of the trait. This keeps the Bunge DuPont Biotech Alliance on track for commercialization of products containing the trait by 2009.

Pioneer Offers 86 New Corn Hybrids, 20 New Soybean Varieties for 2007-- Pioneer added 86 new Pioneer® brand corn hybrids to its North America lineup for 2007. This includes 17 new, higher yield genetic families available with the Herculex® family of insect protection traits and the Roundup Ready® Corn 2 traits. Pioneer also added 20 new soybean varieties to its lineup for 2007.

DuPont Achieves Regulatory Milestone for Optimum™ GAT™ Trait in Soybeans -- DuPont met an important milestone toward the commercialization of its proprietary Optimum™ GAT™ trait by completing its U.S. regulatory submissions for approval of the trait in soybeans. This keeps the company on track for commercialization of soybean products containing the trait by 2009.

The Solae Company Introduces New Ingredients -- The Solae Company debuted Supro® 430, an innovative soy protein ingredient technology for nutrition bars. The new isolated soy protein offers the potential to significantly reduce formulation costs, while maintaining or improving taste, shelf life and texture.

DuPont Launches New Professional Products Insecticides -- DuPont launched two new Advion® brand cockroach and ant control products for Pest Management professionals.

DuPont Tate & Lyle Bio Products Begin Bio-PDO™ Production in Tennessee -- DuPont Tate & Lyle Bio Products, LLC, an equally owned joint venture of DuPont and Tate & Lyle , announced the first commercial shipments of Bio-PDO™ from its $100 million facility in Loudon, Tennessee.. The Loudon facility produces 1,3-propanediol (Bio-PDO™) from renewable resources – in this case corn sugar – making it the first facility in the world to manufacture this new bio-based product.

New Refrigerant Unveiled -- DuPont Refrigerants unveiled the first demonstration of its leading next generation, low global warming potential (GWP) refrigerant, “DP-1”, in a current production car equipped with a R-134a Mobile Air Conditioning (MAC) system. No changes were made to the demonstration vehicle's existing system.

DuPont™ Nafion® XL™ Introduced -- DuPont Fuel Cells announced the introduction of DuPont™ Nafion® XL™, a new extended life membrane that combines the advantages of mechanical reinforcement with enhanced chemical stability, enabling improved membrane durability.

Going Where the Growth Is:

DuPont and CIMMYT Announce $1.3 Million Maize Collaboration for Africa -- DuPont and CIMMYT, the global wheat and maize improvement center, announced a $1.3 million research, product development and technical support collaboration for Africa. Over the next three years researchers at Pioneer Hi-Bred and CIMMYT will work together to develop novel traits to improve production agriculture and address food challenges in developing countries globally.

DuPont Further Strengthens Seed Business with Second Chinese Joint Venture -- DuPont announced that Pioneer Hi-Bred International has formed a joint venture with one of China’s largest seed production companies, Dunhuang Seed Co. Ltd., to provide top-performing corn hybrids to Chinese farmers in the spring market. DuPont Marks 10-Year Anniversary of Electronic Materials Facility in China -- DuPont marked its 10th year of successful operations at the Electronic Materials DuPont Dongguan Ltd. (EMDD) facility in Dongguan, China. DuPont was the first multinational company to establish a production facility for thick film microcircuit materials in China. The company plans to double capacity within next two years. DuPont Breaks Ground for New Vespel® Plant in Singapore -- DuPont Engineering Polymers broke ground in Singapore for new production facilities for one of its highest growth businesses – DuPont™ Vespel® parts and shapes -- to meet growing demand in Asia.

DuPont Electronic Technologies Establishes Third Facility in Taiwan -- As part of its strategic plan for long term growth in the semiconductor materials market, DuPont Electronic Technologies established a Semiconductor Materials Technical Center in Taiwan’s Hsinchu Science Park. The Semiconductor Materials Technical Center is DuPont Taiwan Technical Center’s (DTTC’s) third facility in Taiwan.

DuPont Shinto JV Acquires Shinto Taiwan -- The DuPont Shinto joint venture acquired 100 percent of the Shinto Taiwan automotive coatings business. The acquisition includes a full manufacturing coatings facility to support the local market.

One DuPont: DuPont Agriculture & Nutrition Increases Investment in Plant Biotechnology; Streamlines Nutrition and Crop Protection Businesses -- DuPont Agriculture & Nutrition launched a plan to increase investment in plant genetics, biotechnology and other high-value growth opportunities, while further improving competitiveness in low- growth areas of its nutrition and crop protection businesses by reducing operating costs about $100 million a year.

DuPont Receives Coalition for Government Procurement Green Contractor Award -- DuPont was recognized by the Coalition for Government Procurement (CGP) for its overall commitment to the environment. The Green Contractor Award is given annually to the government contractor that has made the strongest overall commitment to the environment by either offering environmentally friendly products and services or adhering to environmentally sound manufacturing and/or operating procedures.

DuPont Elects Not to Participate in U.S. Army’s Wastewater Proposal -- DuPont announced that it will not participate in the revised proposal to transport wastewater from the U.S. Army’s destruction of chemical agent in Newport, Ind., to DuPont’s Chambers Works facility in Deepwater, N.J., for final treatment.

January 23, 2007

FOURTH QUARTER 2006 INVESTOR RELATIONS NOTE

Selected Balance Sheet Items Preliminary ($ in billions) As of 12/31/2006

Accounts Receivable $5.2

Inventories $4.9

Net working capital, excluding cash and short-term debt $4.6

Cash balance $1.8

Short-term Debt $1.5

Long-term Debt $6.0

The balance sheet information shown above is preliminary and is subject to change. The final information will be published in the Company's report on Form 10-K for the year ended December 31, 2006.

Full Year Other Financial Items 4Q 06 FY 2006 2007 Outlook vs. ($ in millions) 2006

Moderate increase Capital Expenditures(1) $455 $1,563 for growth investments Depreciation Expenses $291 $1,157 Flat

Amortization Expenses $55 $227 Flat

R&D Expenses $341 $1,302 Modestly Up

Base Tax Rate 3.8% 21.5% 27.0%

(1)Preliminary, excluding payments for business acquisitions

4Q 2006 Significant Items Pretax After-tax $/Share ($ in millions) Ag & Nutrition Investment ($194) ($119) ($.13) and Streamlining Plan Industrial Chemical Asset ($47) ($31) ($.03) Held for Sale Insurance Recovery; Asbestos Litigation and $154 $100 $.11 Hurricane Katrina Tax Accrual Reversal; • Tax settlements and related interest • Reversal of tax valuation allowances • The finalization of $90 $538 $.58 taxes related to the repatriation of foreign earnings under the American Jobs Creation Act Sales terms and expense ($58) ($39) ($.04) accrual adjustments

Total ($55) $449 $.49

Significant items listed above are detailed by platform in Schedule A, Notes to Consolidated Income Statement and in Schedule B.

Forward-Looking Statements: This note contains forward-looking statements based on management's current expectations, estimates and projections. These statements are not guarantees of future performance and involve a number of risks, uncertainties and assumptions. These forward- looking statements are current only as the date of this note and DuPont disclaims any obligation or intent to update them in order to reflect events or circumstances after the date of this note, except as may be required by law.