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D3130-11 – Standard Test Method Technical Guide
This article details the technical specifications and requirements outlined in ASTM D3130-11 (Reapproved 2019), the standard specification for n-Propyl Acetate (96 % Grade). This standard is essential for ensuring the quality and consistency of this volatile solvent, which is widely used in paints, coatings, and chemical manufacturing processes.
📐 Scope and Referenced Documents
ASTM D3130 covers the requirements for n-propyl acetate of 96% grade. The standard mandates that values stated in SI units are the standard. It also specifies that for determining conformance, observed values must be rounded “to the nearest unit” in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29. For specific hazard information and guidance, users must consult the supplier’s Material Safety Data Sheet (SDS).
The standard references several critical ASTM test methods for verification, including Guide D268 for sampling and testing volatile solvents, Test Methods D1078 (Distillation Range), D1209 (Color), D1364 (Water by Karl Fischer), D1613 (Acidity), and D3545 (Purity by Gas Chromatography). Packaging of the chemical must comply with U.S. Federal Specification PPP-C-2020.
📊 Chemical and Physical Requirements
The standard defines stringent limits for purity and physical properties to ensure the solvent meets the required specifications for industrial applications. The table below summarizes the mandatory requirements for n-propyl acetate (96% grade).
| 🟦 Property | 📐 Specification Limit | ⚡ Test Method |
|---|---|---|
| Apparent Specific Gravity (20/20 °C) | 0.885 to 0.890 | D4052 |
| Apparent Specific Gravity (25/25 °C) | 0.880 to 0.885 | D4052 |
| Color, Pt-Co units, max | 15 | D1209 / D5386 |
| Initial Boiling Point, min (°C) | 96 | D1078 |
| Dry Point, max (°C) | 103 | D1078 |
| Nonvolatile Matter, max (mg/100 mL) | 5 | D1353 |
| Water, max (wt %) | 0.1 | D1364 |
| Acidity (as acetic acid), max (wt %) | 0.01 | D1613 |
| Purity, min (wt %) | 96.0 | D3545 |
⚙️ Testing and Conformance Methods
Compliance with D3130 requires careful adherence to specific test methods. Sampling of the industrial chemical should strictly follow Practice E300, while general sampling and testing guidelines for paint-related materials are provided in Guide D268. The purity of the acetate ester is critically determined using Gas Chromatography as per Test Method D3545. The distillation range, tested via D1078, must fall strictly between an initial boiling point of 96 °C and a dry point of 103 °C at 760 mmHg.
It is important to note the distinction between color measurement methods. While both Test Method D1209 (visual) and D5386 (instrumental tristimulus colorimetry) are acceptable, the standard notes that n-propyl acetate may not have been specifically included in the instrumental method’s interlaboratory study, though no significant statistical difference has been established overall. Water content can alternatively be assessed using Test Method D1476 (Heptane Miscibility), which serves as a useful pass/fail check for the presence of undissolved water.
💡 Technical Tip: Instrumental Pt-Co color determined by Test Method D5386 has been shown to have no statistically significant difference from the visual method via D1209 in general interlaboratory studies. However, specific correlation for n-propyl acetate lots should be verified if precision requirements are critical.
⚡ Important Compliance Note: For purposes of determining conformance with ASTM D3130, an observed value or a calculated value must be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit, strictly in accordance with the rounding-off method of Practice E29. Failure to do so may result in incorrect compliance determination.
❓ Frequently Asked Questions
🔍 What is the minimum purity requirement for n-propyl acetate under ASTM D3130?
The minimum purity requirement for n-propyl acetate (96% grade) is 96.0% by weight, as determined by Test Method D3545 (Gas Chromatography).
© 2026 TNLab — This article is a technical interpretation for reference only. The original standard as published by ASTM International takes precedence.