Producer Price Index for the entire chemical manufacturing industry sub-sector, a PCU index priced at the plant gate across every chemical-producing segment from resins to pharmaceuticals rather than one product line. Index base: December 1984 = 100.
Latest value
375.384
Index · as of Aug 2026
Year-over-year change
+4.8%
BLS
Month-over-month change
-0.1%
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 348.4 to 375.4, a change of +7.7%.
Highest reading in that period: 384.5 in May 2026. Lowest: 348.4 in Jan 2024.
Largest one-month rise: +3.9% in May 2026. Largest one-month fall: -1.3% 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.
Volatility (12mo)
±1.39%
Std. dev. of month-over-month change
Strongest average month-over-month move historically: May (+1.2% avg).
What this means for your clause
Sometimes cited in general contract boilerplate as a catch-all chemicals escalator. A drafter should name the specific chemical index instead whenever the contract has one identifiable input, since this aggregate moves with the whole sector, not the one product being bought.
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 — Chemical Manufacturing (BLS series PCU325---325---), 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.]
Base oils have two real named benchmarks, Argus Base Oils and ICIS Base Oils-Lubes, both weekly, both subscription-only. A domestic BLS proxy exists as a free fallback, PCU324191324191 for lubricating oil and grease. There is no confirmed standalone "Argus Additives" product, despite that name circulating informally, so verify the exact report name before citing one in a contract.
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