Index lookup · WPU061303
US PPI — Alkalies and Chlorine, Including Natural Sodium Carbonate and Sulfate
Producer Price Index for the alkalies and chlorine group, a WPU commodity aggregate one level broader than WPU06130302 (Chlorine, Sodium Hydroxide, and Other Alkalies), also including natural sodium carbonate and sulfate. Index base: 1982 = 100.
Latest value is 1 month old. Next update expected around Sep 2026.
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Price history
Data & insights
Key figures
- From Jan 2024 to Aug 2026 the index went from 413.2 to 420.7, a change of +1.8%.
- Highest reading in that period: 429.7 in Jun 2026. Lowest: 395.3 in Sep 2024.
- Largest one-month rise: +2.8% in Jul 2025. Largest one-month fall: -1.9% in Jul 2026.
- The year-over-year change stayed within 10% either way in each of the last 20 months, so a 10% annual cap or floor would not have been reached.
Strongest average month-over-month move historically: September (-1.3% avg).
What this means for your clause
Appears in glass manufacturing and detergent supply contracts that use soda ash alongside chlor-alkali products, where the wider grouping captures more of what the buyer actually purchases than the narrower chlorine-and-caustic series would. A contract buying only caustic soda gets a cleaner match from the single-product series instead.
Draft a clause
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Alkalies and Chlorine, Including Natural Sodium Carbonate and Sulfate (BLS series WPU061303), published by BLS. Base Period: the index value published for August 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
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