Hexaethylcyclotrisiloxane

# Hexaethyldisiloxane (CAS 2031-79-0) Recent Commodity Market Intelligence

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## I. Price Trends Overview

| Time Node | Quote (CNY/ton) | Quoting Entity | Delivery Location | Purity | Packaging |
|---|---|---|---|---|---|
| 2026-11-12 | 3,800,000 | Jiangsu Xinsu New Materials Co., Ltd. | Suzhou, Jiangsu | 99% | 25 kg/drum |
| 2026-11-11 | 3,800,000 | Jiangsu Xinsu New Materials Co., Ltd. | Suzhou, Jiangsu | 99% | 25 kg/drum |
| 2026-11-10 | 3,800,000 | Jiangsu Xinsu New Materials Co., Ltd. | Suzhou, Jiangsu | 99% | 25 kg/drum |
| 2026-11-09 | 3,800,000 | Jiangsu Xinsu New Materials Co., Ltd. | Suzhou, Jiangsu | 99% | 25 kg/drum |
| 2026-11-06 | 3,800,000 | Jiangsu Xinsu New Materials Co., Ltd. | Suzhou, Jiangsu | 99% | 25 kg/drum |
| 2026-11-05 | 3,800,000 | Jiangsu Xinsu New Materials Co., Ltd. | Suzhou, Jiangsu | 99% | 25 kg/drum |
| 2026-11-06 (Avg.) | 3,800,000 (-100,000 vs. previous) | Market Average | — | 99% | — |

**Core Conclusion: Over the past week (Nov 5–12), prices have remained flat at 3.8 million CNY/ton, down by 100,000 CNY/ton from the previous level (approx. 2.6% decrease), indicating a trend of \"high-level stabilization with a slight pullback.\"**

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## II. Supply-Side Intelligence

**2.1 Major Supplier Landscape**

There are at least 7 active suppliers in the current market, with the following geographic distribution:

- **Shandong (4 firms)**: Jinan Langhua Chemical, Shandong Luoheng Chemical, Liaocheng Jinxinda New Materials, etc.
- **Jiangsu (1 firm)**: Jiangsu Xinsu New Materials (current primary quote provider)
- **Shanghai (1 firm)**: Shanghai Biyang Industry, Shanghai Yuanye Biotech
- **Zhejiang (1 firm)**: Hangzhou Anjiarui Technology
- **Hubei (Multiple firms)**: Hubei Shishun Biotech, Hubei Xinmingtai, Hubei Nuona Technology, Hubei Junrui

**2.2 Production Capacity and Supply Capability**

- **Hubei Shishun Biotech**: Total supply capacity of 10,000 kg; minimum order quantity (MOQ) of 1 kg; specifications available in 1 kg / 25 kg / 200 kg.
- **Jiangsu Xinsu**: Minimum single quote quantity of 1 ton; brand name \"Senfida.\"
- **Research-grade small packaging** (e.g., Shanghai Yuanye 10 g/bottle) is quoted at 1,800 CNY/bottle, targeting laboratory demand.

**2.3 Raw Material Cost Transmission**

Hexaethyldisiloxane is synthesized via the reaction of dichlorodiethylsilane and trimethylchlorosilane. Fluctuations in upstream chlorosilane prices directly impact its cost floor. Currently, upstream organic silicon raw materials are in an adjustment cycle, providing cost-side support for the slight price decline of this product.

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## III. Demand-Side Intelligence

**3.1 Core Application Areas**

| Application Direction | Specific Scenarios | Demand Intensity |
|---|---|---|
| Ethyl silicone rubber synthesis | Aerospace seals, automotive high-temperature hoses, chip packaging protection | ★★★★★ |
| High-performance silicone resin preparation | High-end coatings, insulation materials, composite material matrices | ★★★★ |
| Fine chemical modification | Surface property optimization of organic materials, functional organic silicon intermediates | ★★★ |
| New energy / electronics / biomedical | Emerging fields, potential being realized | ★★★ (Growing) |

**3.2 Demand Trend Assessment**

- **Traditional sectors** (silicone rubber, silicone resin) show stable demand, forming the basic market base.
- **Emerging sectors** (new energy vehicles, high-end electronics, biomedical materials) are in the introduction phase; incremental growth is expected but has not yet formed large-scale pull.
- Downstream procurement is primarily \"just-in-time restocking,\" with weak willingness for large-scale stockpiling, resulting in rigid market transactions.

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## IV. Technical and Safety Parameters

| Parameter | Value |
|---|---|
| Molecular Formula | C??H??O?Si? |
| Molecular Weight | 306.62 |
| Density | 0.95 g/cm3 |
| Melting Point | 14°C |
| Boiling Point | 117°C (10 torr) |
| Flash Point | 94.3°C |
| Refractive Index | 1.4308 |
| Vapor Pressure | 0.0314 mmHg (25°C) |
| Rat Oral LD?? | >20 g/kg (Low toxicity) |
| TSCA Inventory | Listed |

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## V. Analytical Judgment

**5.1 Price Trend Forecast**

**Short-term (1–2 weeks): High probability of sideways oscillation.** The price of 3.8 million CNY/ton has remained unchanged for a week, indicating a temporary balance between buyers and sellers at this level. SunSirs (SunSirs.com) has continuously published price updates (Nov 6, 9, 10, 12), reflecting high market attention but limited volatility.

**Medium-term (1–3 months): Potential for further slight decline.** The signal of a 100,000 CNY/ton reduction from the previous level should not be ignored. If upstream chlorosilane prices continue to weaken or downstream demand does not show significant expansion, prices may test the support level of 3.7 million CNY/ton.

**5.2 Supply-Demand Dynamics**

- **Supply side**: Multi-point layout in Hubei, Shandong, and Jiangsu; capacity is dispersed but total volume is controllable, with no signs of concentrated capacity expansion in the short term.
- **Demand side**: Expansion into high-end application scenarios requires time, making it difficult to form explosive pull in the short term.
- **Inventory side**: Current inventory is primarily circulating stock; social inventory levels are moderate, with no significant accumulation or shortage observed.

**5.3 Risk Warnings**

- Fluctuations in the supply of upstream dichlorodiethylsilane will directly impact the cost side.
- Stricter environmental policies may increase production compliance costs.
- Accelerated import substitution and increased domestic localization rates may intensify domestic competition.

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## VI. Forecast

| Dimension | Judgment |
|---|---|
| **Price Range (Next 1 month)** | 3.7 million – 3.85 million CNY/ton, centered at 3.8 million CNY/ton |
| **Trend Direction** | Weak oscillation, limited downside space (approx. 2–3%) |
| **Transaction Volume** | Maintains steady levels, no signs of volume expansion |
| **Key Variables** | Upstream chlorosilane prices, pace of downstream silicone rubber order release |
| **Medium-to-Long-term Outlook** | With deepening penetration in new energy and high-end electronics, an upward channel is expected to return in 2027 |

**One-sentence Summary: Hexaethyldisiloxane is currently in a phase of \"high-level consolidation and potential buildup.\" Short-term stability with slight downward pressure is expected, while medium-to-long-term prospects remain strong, benefiting from the high-end trend in the organic silicon industry. It remains a core product worthy of close monitoring.**