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D2827-19 – Standard Test Method Technical Guide
📜 Specification Scope and Applicable Documents
This specification, designated as ASTM D2827-19, establishes the standard requirements for styrene monomer. It falls under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of Subcommittee D16.07. Originally approved in 1969, this revision specifies material properties, sampling protocols per Practice D3437, and the test methods required for conformance. All values are stated in SI units. For purposes of determining conformance, observed or calculated values must be rounded to the nearest unit in the last right-hand digit of the specification limit, in accordance with the rounding-off method of Practice E29.
The standard references a comprehensive set of ASTM methods for evaluating purity, color, aldehydes, peroxides, polymer, inhibitor content, and trace impurities. Full details are available in Section 2 of the standard.
⚠️ Mandatory Safety Compliance: Section 1.4 of D2827-19 directs users to consult current OSHA regulations (29 CFR 1910.1000 and 1910.1200), the supplier’s Safety Data Sheet, and all applicable local regulations. Styrene monomer is a flammable and reactive liquid; proper ventilation, grounding, and personal protective equipment are essential.
🧪 Chemical and Physical Property Requirements
Styrene monomer conforming to this specification must meet the strict limits provided in Table 1 of the standard. The inhibitor p-tert-Butylcatechol (TBC) is required within a specific range to prevent hazardous premature polymerization.
| 🟦 Property | 📏 Specification Limit | 📐 Test Method |
|---|---|---|
| Purity (mass %), min | 99.8 | D5135 or D1016 |
| Aldehydes, as benzaldehyde (mg/kg), max | 100 | D2119 or D7704 |
| Peroxides, as H₂O₂ (mg/kg), max | 100 | D2340 |
| Polymer (mg/kg), max | 10 | D2121 |
| p-tert-Butylcatechol (TBC) (mg/kg) | 10 – 15 | D4590 |
| Water (mg/kg), max | 300 | D6304 or E1064 |
| Color (Pt-Co Scale), max | 10 | D5386 |
| Appearance | Clear, free of sediment | E2680 |
⚙️ Quality Control and Test Methods
Adherence to the specification limits is verified through specific ASTM methods. Gas chromatography per Test Method D5135 (Analysis of Styrene by Capillary Gas Chromatography) is the primary technique for purity and impurity evaluation, while the freezing point method D1016 provides an alternative purity determination. Specialized methods are used for aldehydes (potentiometric titration per D7704), peroxides (D2340), and TBC content (colorimetric analysis per D4590).
💡 Critical Handling Note: Per Practice D3437, samples must be protected from light and heat and analyzed promptly. The TBC inhibitor requires dissolved oxygen to function effectively; therefore, nitrogen blanketing that removes oxygen should be avoided unless the stabilizer formulation is specifically adjusted to compensate.
❓ Frequently Asked Questions
© 2026 TNLab — This article is a technical interpretation for reference only. The original standard as published by ASTM International takes precedence.