| HS Code | 210280 |
| Chemical Type | Polyether-modified polysiloxane (PEG silicone fluid) |
| Appearance | Colorless to light yellow transparent liquid |
| Ionicity | Nonionic |
| Active Content | 100% |
| Viscosity At 25 C | 800–3000 mPa·s |
| Specific Gravity At 25 C | 1.02–1.07 |
| Refractive Index At 25 C | 1.440–1.455 |
| Ph Value In 1 Aqueous Solution | 5.5–7.5 |
| Water Solubility | Soluble or dispersible in water |
| Surface Tension In 0 1 Aqueous Solution | 20–25 mN/m |
| Hlb Value | 8–12 |
| Flash Point | >100°C |
As an accredited PEG Silicone Fluid RH-1017 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | PEG Silicone Fluid RH-1017 is typically packed in 200 kg net steel drums with inner liners for safe storage and transport. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with PEG Silicone Fluid RH-1017 in sealed drums, securely stowed and ready for ocean shipment. |
| Shipping | PEG Silicone Fluid RH-1017 is typically shipped as a non-hazardous industrial liquid in sealed, labeled drums or IBCs. Transport is generally not regulated under DOT, IMDG, or IATA; confirm against the current SDS. Keep containers closed, dry, and protected from extreme temperatures during storage and handling. |
| Storage | Store PEG Silicone Fluid RH-1017 in original, tightly closed containers in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep separate from strong oxidizers and incompatible chemicals. Protect from moisture, contamination, freezing, and excessive heat; maintain labeled containers, spill containment, and follow the SDS and local regulations. |
| Shelf Life | RH-1017 PEG silicone fluid typically has a 24-month shelf life from manufacture when stored sealed in its original container under recommended conditions. |
Polyol-side addition of PEG Silicone Fluid RH-1017 in continuous flexible polyurethane slabstock foaming is performed before isocyanate metering on low-pressure mixheads running at 25–40 kg/min. The material lowers gas–liquid interfacial tension during the blow reaction, allowing the urea–water reaction gas to be dispersed into fine bubbles before the polymer network builds sufficient modulus to resist cell growth. In standard 3,000–5,000 molecular weight polyether triol formulations, the silicone polyether is charged at 0.5–2.0 pphp. Below 0.3 pphp, coalescence and bottom voids become detectable by visual cut-slab inspection; above 2.5 pphp, over-stabilization narrows the processing window and produces shrinkage in blocks thicker than 600 mm. The additive is predispersed in the polyol side at 20–25 °C under low-shear agitation of 200–500 rpm for 20–30 min before the continuous pour begins. Cream time on production equipment is checked by cup test and maintained within 6–12 s. Physical testing of the final foam uses ASTM D3574 Test D for indentation force deflection, ISO 845 for apparent density, and ISO 3386-1 for compression stress–strain. Terminal articles from this process include automotive seat cushions, mattress cores, and shoe sole blanks where cell count and air permeability are controlled more by silicone-polyether interfacial behavior than by organotin catalyst adjustment alone.
O/W lotion manufacturing requires PEG Silicone Fluid RH-1017 to be incorporated at 0.5–3.0 wt% of the total formula as a nonionic silicone co-emulsifier and wetting agent. The oil phase containing emollients, fatty alcohols, and the silicone polyether is heated to 70–75 °C; the water phase containing 5–10 wt% glycerin and a carbomer or polymeric stabilizer is heated to the same temperature. Emulsification is performed with a rotor-stator homogenizer at 3,000–5,000 rpm for 3–5 min, followed by cooling to 35 °C under anchor stirring at 20–40 rpm. Median droplet size is controlled to 1–10 µm by laser diffraction; narrowing the distribution below 2 µm improves physical stability but may increase viscosity in carbomer-thickened systems. The emulsifier remains process-stable at pH 4.0–8.0; at pH below 4.0, polyether side-chain hydrolysis may reduce interfacial activity over 12 months at 40 °C accelerated storage. Production documentation follows ISO 22716 GMP, and product safety is assessed under EU 1223/2009; cyclic silicone impurities, where applicable, are checked against Annex II restrictions. Preservation is validated by ISO 11930 challenge testing. Terminal formulations include sunscreens, hair serums, and silicone-based foundations where the siloxane backbone reduces tack without blocking water vapor transmission.
For two-component polyurethane clearcoats sprayed by HVLP or air-assisted airless equipment, PEG Silicone Fluid RH-1017 is post-added at 0.1–0.5 wt% on total resin solids to suppress cratering and increase flow over contaminated substrates. The main operational boundary is intercoat adhesion after sanding or after a closed baking window of 30 min at 60–80 °C; at addition levels above 0.3 wt%, a residual silicone boundary layer can reduce cross-cut adhesion. Recoatability is therefore tested by the ISO 2409 cross-cut method after 24 h drying. Cratering resistance is evaluated with ASTM D4062 leveling drawdowns, gloss retention with DIN EN ISO 2813, and haze development with ASTM D4039. The additive is introduced at the letdown stage after pigment dispersion to avoid competitive adsorption on pigment surfaces; letdown mixing at 800–1,200 rpm for 10–15 min is adequate. Terminal applications include automotive refinish clearcoats, polyurethane wood topcoats, and coil-coating primers where surface cleanliness and intercoat adhesion after sanding are critical specification points.
Dip-pad finishing of woven polyester microfiber sportswear uses PEG Silicone Fluid RH-1017 as a hydrophilic silicone softener at 5–20 g/L in the pad bath with a pick-up of 60–80% on a three-bowl padder. The nonionic character allows combining with DMDHEU crosslinkers at 40–60 g/L and citric acid catalyst in the same bath, provided the bath pH is kept at 4.5–5.5. The padded fabric is dried on a stenter frame at 120–130 °C for 60–90 s and cured at 160–170 °C for 45–60 s. Hydrophilicity is measured by AATCC 79 drop absorption; rewet times below 5 s are targeted for sportswear. Whiteness retention after 5 laundering cycles is graded according to AATCC 110. Unlike amino-functional silicones, the polyether-modified fluid does not cause thermomigration of disperse dyes in polyester at cure temperatures up to 170 °C and does not develop the yellowing and hydrophobic recovery typical of amine-based softeners. Terminal products include moisture-transport sports jerseys, nonwoven hygiene top sheets, and anti-static cleanroom garments tested under DIN EN 1149-1.
When foam height in aerobic fermentation exceeds 30% of working volume, PEG Silicone Fluid RH-1017-containing antifoam is metered into the vessel at 5–50 ppm active concentration relative to broth volume after dilution 1:10 in cold water to improve dispersion. The dosing is controlled by foam-sensing probes with a dead band of 10% foam height to prevent oscillator-driven overdosing. The polyether silicone lowers surface elasticity and accelerates bubble coalescence in the headspace without eliminating dissolved oxygen transfer; kLa is checked by the dynamic gassing-out method. Foam collapse time is measured by a sparge test based on ASTM E2407, though published data for this specific configuration is limited. Overdosing above 100 ppm active can depress dissolved oxygen and reduce biomass yield, so the lower effective dose is used and verified by off-gas CO₂ analysis. Downstream from the fermenter, ultrafiltration units with 10 kDa polysulfone membranes require flux monitoring because silicone-polyether residues may adsorb and change membrane permeability. Terminal fermentation broths are processed into bioethanol, industrial enzymes, and amino acids.
Agrochemical spray solutions for waxy-leaf orchard crops incorporate PEG Silicone Fluid RH-1017 at 0.05–0.3% v/v of the final spray solution to reduce contact angle and increase deposition. The surfactant is added after the pesticide concentrate has been diluted and before final pH adjustment; compatibility with glyphosate isopropylamine and lambda-cyhalothrin suspension concentrates is verified by jar test according to CIPAC MT 36. Hydraulic flat-fan nozzles at 150–300 L/ha produce a spray spectrum in which the silicone polyether lowers dynamic surface tension, allowing droplet spread on waxy cuticles; a screening criterion for citrus and tomato leaves is a static contact angle below 30°. Spray retention is quantified by washing leaves with a 0.02% sodium fluorescein tracer and measuring the recovered dye by spectrofluorometry; the improvement relative to an untreated control is species-specific and must be revalidated for each tank mixture. Rainfastness is formulation-dependent and influenced by the pesticide active ingredient, so no universal rainfastness claim is made. The adjuvant also suppresses foam in the spray tank during agitation. Storage of the formulated adjuvant is at 5–35 °C; freeze-thaw stability is verified for 3 cycles.
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Polyoxyethylene-modified polydimethylsiloxane RH-1017 is a nonionic silicone-polyether copolymer in which pendant polyether chains are grafted onto a polydimethylsiloxane backbone. The manufacturer designation RH-1017 is not an INCI name; depending on the exact polyether chain length and ethylene oxide-to-propylene oxide ratio, the product may be listed as a PEG-n dimethicone or PEG/PPG-n/m dimethicone on regulatory documentation. The copolymer is supplied as a clear to slightly hazy, pale yellow viscous liquid with a medium polyoxyethylene content, providing water dispersibility without eliminating the interfacial activity of the siloxane segment. Primary industrial functions include emulsification, surface-tension reduction, foam stabilization, wetting, and hydrophilic modification of surfaces that would otherwise remain hydrophobic.
In aqueous systems the material forms translucent to clear dispersions at use concentrations between 0.5 wt% and 10 wt%, depending on temperature and electrolyte load. The cloud point is a critical formulation parameter: above the cloud temperature the polyether segment dehydrates, causing a reversible collapse of the hydrophilic shell and loss of solubility. For polyether silicones in the viscosity range associated with RH-1017, the cloud point typically falls between 30 °C and 45 °C in 1% aqueous solution, although salts, glycols, and anionic surfactants shift this boundary. The product cannot be characterized solely by siloxane viscosity; the polyether-to-silicone ratio controls both solubility and adsorption at air-water interfaces.
Published certificate-of-analysis data for RH-1017 specifically are limited in open technical literature. The specification envelope in Table 1 is therefore compiled from documented ranges for polyether-modified polydimethylsiloxanes of equivalent nominal viscosity and hydrophilic-lipophilic balance. Lot-specific certificates may list narrower internal control limits; formulators should request the hydroxyl value, cloud point, and residual water content from the supplier because these parameters affect emulsification and storage stability more strongly than kinematic viscosity alone.
| Property | Typical envelope | Test method |
|---|---|---|
| Appearance | Clear to slightly hazy, pale yellow liquid | Visual, ASTM D1544 |
| Kinematic viscosity at 25 °C | 500–1,500 mm²/s | ISO 3104:2023 |
| Specific gravity at 25 °C | 1.02–1.08 | ASTM D1217 |
| Refractive index nD25 | 1.445–1.455 | ASTM D1218 |
| Surface tension, 0.1% aqueous | 21–25 mN/m | ASTM D1331 |
| Cloud point, 1% aqueous | 30–45 °C | ISO 1065 |
| pH, 5% aqueous | 6.0–8.0 | ISO 4316 |
| Water content | ≤0.5% | ASTM E203 |
| Non-volatile content | ≥98% | Gravimetric, 105 °C for 2 h |
Viscosity in this class is shear-rate dependent under high-shear mixing; the values in Table 1 are low-shear kinematic measurements, not the apparent viscosity encountered in rotor-stator dispersion. A separate batch-to-batch control is usually placed on the 1% aqueous cloud point because a shift of 3 °C can alter emulsification behavior in hot-process formulations.
In distilled water at 0.1 wt%, the equilibrium surface tension falls in the range 21–25 mN/m when measured by the Du Noüy ring method specified in ASTM D1331. The critical micelle concentration is generally in the range 10–50 mg/L for silicone polyethers of this ethylene oxide content. Dynamic surface tension at 10 ms surface age remains higher than equilibrium values because the siloxane backbone has a lower diffusion coefficient than low-molecular-weight alcohol ethoxylates. In high-speed spray and coating operations, this difference means RH-1017 should be evaluated as a flow and leveling aid rather than as the sole rapid-wetting agent.
When RH-1017 is pre-diluted before high-shear mixing, the phase-inversion viscosity spike can be reduced. Direct addition of deionized water to the neat fluid in a production rotary-stator mixer at tip speeds above 15 m/s can generate a temporary gel-like intermediate when the water content reaches 30–60 wt%. The mixture clarifies after further dilution below 30 wt%. On variable-frequency-drive mixers, operators effectively start at 500 rpm and do not ramp to 3,000 rpm until the batch turns translucent. A pre-blend with propylene glycol or dipropylene glycol at a 1:1 mass ratio reduces the intermediate viscosity and lowers air entrainment. Batch temperatures should be held below 45 °C unless the downstream process specifically operates above the cloud point.
In industrial emulsification trials using a multi-stage homogenizer with a first-stage pressure of 50–100 bar, pre-diluted RH-1017 at 10 wt% in water produced droplet-size distributions with a median diameter below 5 μm. Published data for this specific RH-1017 configuration is limited; the result is representative of silicone polyethers in the same HLB band. Air incorporation in the final emulsion is minimized when the dilution vessel is equipped with a bottom-entering mixer rather than a top-entering open impeller.
Thermal degradation at 180 °C is governed by polyether chain cleavage rather than siloxane backbone scission. Thermogravimetric scans at 10 °C/min under nitrogen for this class of polyether silicones show a first mass-loss onset near 200–250 °C, with reported first-stage decomposition activation energies in the range 150–200 kJ/mol. Consequently, RH-1017 should not be held in open process vessels above 150 °C for more than 24 h. The polyether segment is also susceptible to strong acid and alkali; pH values above 9.0 or below 3.0 can hydrolyze siloxane linkages during extended storage. For hot-mix operations above 80 °C, a nitrogen blanket or closed system is preferable to prevent oxidative discoloration.
In waterborne acrylic and polyurethane dispersion coatings, addition levels of 0.05–0.3 wt% on total formulation are typical. The silicone polyether lowers equilibrium and dynamic surface tension, reduces cratering, and improves flow after spray application. Draw-down leveling measured according to ASTM D4062 improves when the additive is introduced in the letdown stage under moderate agitation rather than during pigment dispersion. Hard-water-sensitive lattices may require a chelating agent because calcium ions reduce polyether solubility and depress the cloud point. At addition levels above 0.5 wt%, intercoat adhesion can decline unless the surface is cleaned or sanded before overcoating. Users should verify VOC contribution under ASTM D3960 because the final product is generally supplied at ≥98% non-volatile content.
The structural difference lies in the pendant polyether chains. Linear polydimethylsiloxane is water-insoluble and requires mechanical emulsification or emulsifiers; RH-1017 is self-dispersible and can form translucent aqueous systems. Amino-functional silicones impart high substantivity to cotton and synthetic fabrics but can yellow under thermosetting conditions and reduce fabric hydrophilicity. RH-1017 lacks cationic charge, so it is less substantive to negatively charged fibers but has a lower tendency to block absorbency. Alkyl-modified siloxanes depend on hydrocarbon compatibility and may dissolve in nonpolar mineral oil; RH-1017 generally disperses poorly in nonpolar oils and is not a defoamer for such systems. Against low-molecular-weight trisiloxane wetting agents, RH-1017 has slower dynamic adsorption but is less prone to rapid hydrolysis at neutral pH and provides a different skin feel in personal care.
| Property | RH-1017 class | Linear polydimethylsiloxane | Amino-functional silicone fluid |
|---|---|---|---|
| Water behavior | Self-dispersible, translucent at 1% | Insoluble | Insoluble unless protonated |
| Surface tension at 0.1% | 21–25 mN/m (ASTM D1331) | 20–22 mN/m | 24–28 mN/m |
| Cotton absorbency after pad cure | Maintained, wicking <5 s (AATCC Test Method 79) | Reduced | Reduced |
| Yellowing under heat set | Low, Gardner Δ<1 | Low | Moderate to high |
| Substantivity to anionic fibers | Moderate | Low | High |
| Typical processing | Cold emulsification possible | Pre-emulsification required | Cationic pre-emulsion usually required |
Pad-dry-cure application at 2–5 g/L on cotton knit is reported to maintain vertical wicking time below 5 s according to AATCC Test Method 79 when the fabric is dried at 120 °C for 3 min; published data for RH-1017 specifically is limited. Static surface resistivity measured by ASTM D257 can fall by approximately two orders of magnitude relative to untreated polyester. Unlike conventional amino silicone softeners, RH-1017 does not require acetic acid pre-dilution and is less prone to forming silicone spots if the pad trough is held at 25–35 °C. If a softer hand is required, RH-1017 is often blended with an amino silicone at mass ratios between 1:3 and 1:9 to balance hydrophilicity and surface smoothness.
The dynamic surface-tension effect arises from diffusion and adsorption of the siloxane-polyether copolymer at freshly created droplet interfaces. In spray nozzles operating at 2–4 bar, droplet surfaces form within milliseconds; RH-1017 at 0.025–0.1% v/v can reduce rebound and improve leaf retention, but its molecular weight yields slower adsorption than conventional trisiloxane wetting agents. Formulations are therefore often paired with a low-molecular-weight nonionic co-surfactant to achieve contact-angle reduction within 50 ms. Evaluation should use maximum bubble-pressure tensiometry or droplet spread tests rather than equilibrium ring methods. Spray droplet-size and drift behavior can be characterized under ASTM E2798, but the final recommendation must be verified on the target crop because leaf surface roughness and electrolyte concentration in tank water shift adsorption.
In flexible slabstock polyurethane foam, RH-1017 may be metered into the polyol component at 0.5–2.0 pphp before impingement mixing with isocyanate. The silicone polyether stabilizes the expanding foam cell walls and helps maintain a homogeneous cell size distribution. Hand-mix evaluations pre-blend the material with water and amine catalyst before stannous octoate addition; this order prevents localized gel-phase formation and ensures reproducible rise profiles. Mixing at 1,500–3,000 rpm in a low-pressure foaming machine requires the polyether silicone to remain free of visible haze; haze can nucleate irregular cells. Foam air flow and cell structure are measured according to ASTM D3574. At relative humidity above 60% RH, tin catalyst levels may need adjustment because water competes for isocyanate and alters the urethane network buildup. Published process data for RH-1017 specifically is limited; the processing limits are representative of silicone polyethers in this HLB and viscosity range.
In rinse-off personal care formulations, RH-1017 can serve as a secondary nonionic emulsifier and skin-conditioning additive at use levels of 0.2–2.0 wt%. It is generally compatible with alkyl sulfates, alkyl ether sulfates, and amphoacetates. Turbidity may develop in formulations containing high-charge-density cationic polymers such as polyquaternium-10 if the cationic charge exceeds the anionic capacity of the cleansing system. The supplier should provide irritation and sensitization data; this document does not establish cosmetic safety. Preservative efficacy should be confirmed under ISO 11930 challenge testing before production. Hard-water tolerance decreases at elevated temperatures near the cloud point, so cold-process dispersions are recommended for transparent cleansing systems.
Long-term storage is recommended in sealed containers at 5–35 °C. Repeated freeze-thaw cycles below 0 °C may produce temporary haze that clears after warming to 25 °C with gentle mixing. The product contains no added volatile organic solvent within the typical definition of ASTM D3960; however, the final formulation VOC must be measured on the diluted product. Regulatory documentation includes REACH status under EC 1907/2006, applicable 21 CFR clearances for indirect food contact, and regional inventories. Incompatibility is most likely with concentrated electrolytes, strongly acidic or alkaline media, and high-charge-density cationic polyelectrolytes. Users should request the manufacturer’s lot-specific certificate of analysis for the exact RH-1017 batch before validating production, because equivalence between supplier product codes and generic silicone polyether chemistry is not automatic.
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