ASTM D1509-24 PDF

Full title and description

ASTM D1509-24 — Standard Test Methods for Carbon Black—Heating Loss. This standard provides standardized laboratory procedures to determine the heating loss (primarily moisture and other volatiles) of carbon black by controlled drying at 125 °C; it is intended for quality control, specification testing, and sample conditioning prior to other carbon-black analyses.

Abstract

ASTM D1509-24 specifies test methods (commonly referenced as Method A and Method B in historical/recent revisions) for measuring percent heating loss of carbon black using defined sample sizes, oven conditions, and weighing procedures. The methods focus on loss at 125 °C, note limitations for treated carbon blacks with added volatiles, and indicate that recovered carbon fillers may be tested but precision statements may not apply to those recycled materials. The standard has been subject to recent revision activity to update precision and bias information for its methods.

General information

• Status: Current / Active (most recent edition).
• Publication date: December 1, 2024 (designated D1509-24).
• Publisher: ASTM International.
• ICS / categories: 83.040.20 — Rubber compounding ingredients (carbon black).
• Edition / version: D1509-24 (2024 revision).
• Number of pages: 4 pages (current published document).

Scope

These test methods cover the determination of the heating loss of carbon black at 125 °C. Heating loss measured under the prescribed conditions represents primarily moisture but can include other volatile materials. The procedures are not applicable when the intent is to measure moisture in treated carbon blacks containing added volatiles. The methods may also be applied to recovered carbon fillers (rCF/rCB), but precision data in the standard were not developed for those recycled materials and therefore the precision statements may not be valid for them.

Key topics and requirements

• Measurement of percent heating loss (mass loss) of carbon black at 125 °C under specified oven and weighing conditions.
• Sample preparation and sampling references (e.g., Practices D1799 or D1900 for sampling).
• Equipment and apparatus requirements: specified oven types (convection/gravity), low‑form weighing bottles with stoppers, analytical balance with high sensitivity, desiccator, and controlled drying times.
• Two commonly-referenced drying/test approaches (historically described as Method A and Method B) with precision/reproducibility statements; recent work has focused on updating precision/bias data for these methods.
• Limitations and applicability: not intended for treated blacks with added volatiles when measuring moisture; precision statements may not apply to recycled carbon fillers.
• Significance: results are used for quality control, to condition samples for other analyses, and to help specify moisture/volatile content for compounding and processing.

Typical use and users

Used by analytical laboratories, carbon black manufacturers, rubber and polymer compounders, quality control technicians, third‑party testing labs, and recyclers evaluating recovered carbon fillers. Typical uses include incoming inspection, batch release testing, sample conditioning for other carbon-black assays, and material specification verification.

Related standards

ASTM D1509 is part of the carbon‑black and rubber‑chemical test methods collection maintained by Committee D24. Commonly associated standards include ASTM D1506 (ash content), D1510 (iodine adsorption), D1511 (pellet size distribution), D1512 (pH), D1513 (pour density for pelleted carbon black), D1799 and D1900 (sampling practices), and other D15xx series test methods for carbon black characterization.

Keywords

carbon black; heating loss; moisture; volatile materials; 125 °C; sample conditioning; heating‑loss test; rubber compounding ingredients; recovered carbon filler (rCF/rCB).

FAQ

Q: What is this standard?

A: ASTM D1509-24 is the ASTM International standard that defines laboratory test methods to determine the heating loss (percent mass loss on heating) of carbon black at 125 °C.

Q: What does it cover?

A: It covers sample preparation, apparatus (weighing bottle, balance, oven, desiccator), the drying/testing procedure(s) to calculate percent heating loss, and associated precision/reproducibility guidance; it also states limitations for treated carbon blacks and notes applicability caveats for recovered carbon fillers.

Q: Who typically uses it?

A: QC and analytical labs at carbon black producers, rubber and polymer compounders, independent testing laboratories, and material recyclers evaluating recovered carbon fillers.

Q: Is it current or superseded?

A: The D1509-24 edition published December 1, 2024 is the current published edition (designated D1509-24). Users should check for any subsequent revisions or balloted updates from ASTM Committee D24 before relying on status for regulatory or contractual requirements.

Q: Is it part of a series?

A: Yes — it is part of the ASTM family of carbon black and rubber‑related test methods maintained by Committee D24 (the D15xx series and related standards such as sampling practices D1799/D1900 and other D1500‑series test methods).

Q: What are the key keywords?

A: Carbon black; heating loss; moisture; volatiles; 125 °C; sample conditioning; rubber compounding.