| HS Code | 503867 |
| Productname | Green Ecological Amino Acid Modified Silicone Oil RH-NB-8159 |
| Chemicaltype | Amino acid modified polysiloxane |
| Appearance | Colorless to light yellow transparent liquid |
| Ionicity | Weak cationic |
| Phvalue | 5.0-7.0 (1% aqueous solution) |
| Solidcontent | 60% ± 2% |
| Viscosity | 1000-3000 mPa.s at 25°C |
| Solubility | Soluble in water |
| Handfeel | Soft, smooth, and fluffy |
| Hydrophilicity | Good hydrophilicity |
| Yellowing | Low yellowing tendency |
| Antistaticproperty | Improves antistatic performance |
| Environmentalproperty | Free of APEO, formaldehyde, heavy metals, and solvents |
| Compatibility | Compatible with cationic and nonionic auxiliaries |
As an accredited Green Ecological Amino Acid Modified Silicone Oil RH-NB-8159 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 200 kg plastic drums or 1,000 kg IBC totes, each with a sealed inner liner. |
| Container Loading (20′ FCL) | Green Ecological Amino Acid Modified Silicone Oil RH-NB-8159 loaded securely in a 20′ FCL container, properly labeled and stowed for safe transport. |
| Shipping | RH-NB-8159 is shipped in sealed, labeled drums or IBCs suitable for liquid chemical transport. Keep containers closed, upright, and protected from direct sunlight, freezing, and contamination. Store in a cool, dry, ventilated area. Handle with standard PPE and follow the SDS and local transport regulations. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat sources, sparks, and open flames. Keep containers tightly closed when not in use to prevent contamination and moisture ingress. Avoid contact with incompatible materials such as strong oxidizers, acids, and alkalis. Protect from freezing and store separately from food, feed, and drinking water. |
| Shelf Life | Shelf life is approximately 12 months when stored in the original sealed container at room temperature, away from direct sunlight. |
Rinse-off hair conditioning is among the most demanding downstream applications for RH-NB-8159 because the cationic character of the amino acid-modified siloxane backbone interacts with fatty alcohol/cetyl trimonium chloride lamellar gel networks, and emulsion droplet size stability determines wet combing performance after storage at 45 °C for 12 weeks. The active addition ratio is 0.5–2.0 wt% in finished cream rinse conditioners and 1.0–3.0 wt% in hot-pour hair masks, with the lower boundary fixed by the minimum concentration required to reduce wet combing force on bleach-damaged hair by more than 30% in Dia-Stron MTT175 automated tensile testing. In production-scale vessels of 1,000–3,000 kg, the material is pre-diluted with demineralized water at a 1:3 mass ratio at 25–30 °C, then added to the main batch after the emulsion has formed and cooled below 35 °C. Mixing is executed with a counter-rotating anchor agitator at 250–500 rpm; rotor-stator high-shear dispersion above 1,500 rpm is deliberately avoided because it opens the adsorbed interfacial layer and raises the emulsion polydispersity index above 0.25, producing visible white specks in the finished conditioner under D65 light booth inspection. The pH is adjusted with a citric acid solution to 4.0–5.5 after silicone addition, never before, because transient acidic excursions below 3.8 protonate the amino acid residues and reduce deposition onto the hair shaft after a single rinse.
The downstream terminal articles covered by this processing window include cream rinse conditioners, high-viscosity hair masks, co-wash emulsions, and acidic reparative conditioners designed for post-chemical-service use. Compliance for the European Union market is anchored to EC 1223/2009 and manufacturing hygiene to ISO 22716:2007; raw-material documentation follows REACH (EC) No 1907/2006. In addition, the natural-origin index calculation for the finished formulation may reference ISO 16128-1:2016 and ISO 16128-2:2017 when the marketing claim is based on bio-derived carbon content. Process limits include avoiding combination with strongly anionic carbomer gels below pH 4.5, which creates visible haze and phase separation, and keeping storage temperature below 40 °C because repeated freeze-thaw cycles above 3 cycles increase mean droplet size from 120–180 nm to above 500 nm as measured by dynamic light scattering on a Malvern Zetasizer Nano ZS.
In sulfate-free shampoo and body wash systems, the deposition of RH-NB-8159 is governed less by emulsion stability than by partition of silicone droplets between the micellar phase and the negatively charged hair or skin surface. At 0.3–1.0 wt% active addition in finished liquid cleanser, the material is introduced after the surfactant base is fully hydrated and after pH has been adjusted to 5.0–6.0 with lactic acid or citric acid. The production process uses a side premix tank with demineralized water and a nonionic solubilizer at a 1:2 ratio, transferred into the main batch at 25–30 °C through an inline static mixer at 50–100 rpm; rotor-stator dispersion above 2,000 rpm is avoided because it strips the amino acid interface and increases wet combing force by 12–18% in Dia-Stron MTT175 panel measurements on medium-bleached hair. Terminal finished products include sulfate-free shampoo, micellar body wash, low-foaming facial cleanser for sensitive skin, and baby wash formulations where the preservation system is limited to benzyl alcohol and potassium sorbate at 0.5–1.0% total.
Compliance in this cleansing scenario is driven by EC 1223/2009 and ISO 22716:2007, while plant-derived feedstock content may be documented through ISO 16128-1:2016 and ISO 16128-2:2017 natural-origin index disclosures. The formulation boundary that most often triggers batch rejection in surfactant-heavy systems is the combination of more than 8.0 wt% sodium cocoyl isethionate with more than 4.0 wt% cocamidopropyl betaine; under those conditions silicone deposition measured by HPLC-ELSD after solvent extraction falls below 0.05 mg/g hair, and the conditioning benefit is lost. Addition of a cationic guar at 0.1–0.3 wt% restores deposition when used as a pre-mix before silicone addition, but the order of addition must not be reversed.
Textile softening is the deepest process window for RH-NB-8159 because the silicone film is exposed to mechanical shear in the pad trough, high temperature in the stenter, and repeated domestic laundering in the finished garment. In exhaust application on 100% cotton single jersey after dyeing and soaping, the addition ratio is 1.0–2.5% owf with the bath pH buffered to 5.0–6.0 and the temperature held at 40–50 °C for 20–25 min. After hydroextraction to 65–75% wet pickup, the fabric is dried on an 8-zone stenter with the first four zones set at 110–130 °C and the final cure zones at 160–165 °C for 60–90 s. For pad-dry-cure finishing, the working bath is prepared at 5–15 g/L active silicone; above 15 g/L tear strength measured by ISO 13937-2 trousers tear method drops below the untreated control, while below 5 g/L the softness improvement after 5 domestic laundering cycles under ISO 6330:2012 is not statistically distinguishable. The primary continuous-line failure mode is foam formation in the pad trough when the roller speed exceeds 25 m/min unless a vacuum deaerator or defoamer at 0.1–0.3 g/L is used.
Terminal textile articles for this process include reactive-dyed cotton jersey, loop-knit terry towelling, woven shirting, and cotton-modal intimate wear. Compliance records are maintained against OEKO-TEX Standard 100, ZDHC MRSL v3.1, and REACH Annex XVII, with wash fastness assessed by ISO 105-C06:2010 and dimensional stability by ISO 5077:2007. Process limits include avoiding combination with glyoxal-based anti-wrinkle resins at pH below 4.0, because the acid catalysis reacts with the amino acid residues and forms gel particles on the pad roller, and avoiding storage of the working bath for more than 8 h at room temperature when the water hardness exceeds 150 ppm CaCO₃.
Leather finishing with RH-NB-8159 in water-borne polyurethane/acrylic basecoats produces a surface-slip shift that is retained after flexing only if the addition ratio is controlled within a narrow window. The material is added at 1.0–3.0 wt% of total finish solids in the basecoat; below 1.0 wt% the dry flex resistance under ISO 5402:2018 after 50,000 cycles is not distinguishable from an untreated control, while above 3.0 wt% the inter-coat adhesion falls to a level that produces delamination at the basecoat/topcoat interface in tape pull tests. The downstream application step uses HVLP spray guns operating at 2.5–3.0 bar atomizing pressure and a wet application rate of 2–4 g/ft², followed by flash drying at 45–60 °C and hydraulic plating at 70–90 °C and 50–80 bar for 1–3 s. The plate-facing side of the leather must be inspected after each plating cycle because silicone migration to the grain surface causes local gloss streaks above 3.0 wt%.
Terminal finished leather types include full-grain garment nappa, corrected-grain shoe upper, and automotive seat leather. For automotive specifications, the finished leather is aged for 24–48 h before fogging evaluation according to ISO 6452:2011; residual low-molecular siloxane fractions can condense on glass test plates at the specified heating temperature, and the supplier must document siloxane oligomer content through GC-MS with an internal standard rather than relying on a boilerplate declaration. Compliance is maintained under REACH (EC) No 1907/2006 and ZDHC MRSL v3.1, with analytical work performed in an ISO/IEC 17025:2017-accredited laboratory. Incompatibility with nitrocellulose lacquer topcoats above 2.0 wt% silicone in the basecoat requires reducing the addition ratio or increasing crosslinker level in the topcoat to restore wet rub fastness under ISO 11640:2018.
When the product application shifts to leave-on thermal protection, the high-temperature film integrity of RH-NB-8159 becomes the primary controlling attribute rather than wet combing force or deposition efficiency. At 0.2–0.8 wt% active addition in anhydrous or low-water serum systems, the silicone is pre-solubilized in a volatile silicone substitute or isododecane at a 1:2 ratio before blending into the ethanolic phase at 20–25 °C. The downstream production line uses a planetary mixer at 60–120 rpm under vacuum −0.08 MPa to remove entrained air; final viscosity after 24 h is held at 80–500 mPa·s so that pump-spray and dropper packaging can be filled without nozzle clogging. Terminal finished forms include blow-dry cream, flat-iron mist, pumpable hair serum, and low-VOC heat-protectant spray. Compliance is assessed under EC 1223/2009 and ISO 22716:2007, with the natural-origin index documented under ISO 16128-1:2016 and ISO 16128-2:2017. The controlling process boundary is ethanol flash-off above 30 °C in closed mixing vessels, which requires the cooling jacket to hold the batch below 25 °C during the addition sequence. Incompatibility with high-buffered salt matrices above 1.5% sodium chloride should be avoided because it causes phase separation in ethanol-water systems below 20% ethanol.
In polyester draw-texturing spin finish formulation, RH-NB-8159 is used as a secondary film-forming component rather than a primary lubricant because its amino acid residues alter frictional behavior at the ceramic friction disks. The addition ratio in the neat spin finish is 0.2–0.8 wt% active, with the remainder of the formulation comprising aliphatic esters, ethoxylated fatty alcohols, and antistatic agents. Metering is performed by a precision gear pump at 0.3–0.6% oil pickup on fully drawn yarn before the texturing zone; the critical process parameter is viscosity drift during 24–72 h recirculation through a spin finish tank held at 40–45 °C. If the kinematic viscosity at 40 °C increases by more than 15%, passage over the heater plate at 170–185 °C produces a brittle deposit on the plate surface that raises yarn breaks above 0.8 breaks per 10,000 m in DTY production. Terminal yarn types include polyester drawn textured yarn, polyamide FDY, and microfilament polyester for sportswear knits.
Compliance for this downstream segment is maintained under OEKO-TEX Standard 100 and REACH (EC) No 1907/2006; residual siloxane after heat setting is quantified by solvent extraction followed by GC-MS using an internal standard calibration and must be reported because the spin finish remains on the yarn until scouring in the fabric mill. The formulating boundary in this segment is the incompatibility with amine-based antistatic additives above 0.5 wt%, which accelerates viscosity build-up in the recirculation loop and forms gummy deposits on the ceramic disks. Published data for this specific high-speed draw-texturing configuration is limited, so the addition ratio is validated on a 24-filament pilot line before factory-scale deployment.
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Designated as a solvent-free fluid for textile and non-textile surface modification, Green Ecological Amino Acid Modified Silicone Oil RH-NB-8159 is supplied as a 100% active amino-modified polydimethylsiloxane. The manufacturer’s nominal specification includes kinematic viscosity of 500–1500 mm²/s at 25°C under ISO 3104, refractive index 1.4050–1.4150 at 25°C under ISO 280, and amine value 0.15–0.25 mmol/g by neutralization titration. The green ecological classification is defined by control of cyclic siloxanes: D4, D5, and D6 are each specified as ≤0.1 wt% when quantified by gas chromatography in accordance with REACH Annex XVII entry 70. Because the fluid is not dissolved in an organic carrier, its flash point is ≥100°C under ISO 2592, but the material remains combustible and must be kept away from open flames and uncontrolled heat sources.
Model RH-NB-8159 is intended for aqueous emulsification rather than direct solvent letdown. In textile softening applications, the product functions through protonation of amine sites with acetic acid, followed by deposition onto cotton, viscose, polyester-cotton blends, and cellulosic knits. Recommended working emulsions are prepared at 1:10 to 1:30 parts by weight with deionized water at 20–25°C. The final bath pH is maintained between 5.5 and 6.5. At more acidic pH, protonation may increase emulsion viscosity and reduce penetration into dense woven structures. At more alkaline pH, condensation of silanol groups may proceed during drying and alter hand properties. Because the product is not an emulsion, the formulator controls particle size through mechanical energy input; this represents a key difference from ready-to-use solvent-borne amino silicone systems.
The primary difference is the absence of an organic solvent phase. Conventional amino silicone oils are often supplied at 20–60% active content in aromatic or mineral solvent blends, which imposes flash-point constraints and volatile organic compound reporting under ISO 11890-2. RH-NB-8159 is supplied at ≥99% active content, so the formulator can reduce shipment mass and eliminate solvent addition in downstream mixing. The amine value is also controlled in a lower range than many conventional textile grades, which typically range from 0.20 to 0.60 mmol/g. Lower amine value may reduce yellowing after heat curing on white goods, although whitening and color change must be assessed on the actual fabric using ISO 105-C06 or AATCC TM110.
Published data for this specific configuration is limited. The comparative ranges in Table 1 are drawn from manufacturer technical datasheets for amino-modified polydimethylsiloxane fluids and from solvent-borne amino silicone intermediates commonly cited in textile auxiliaries literature. They are not batch guarantees and should be verified against the supplier’s certificate of analysis.
| Parameter | RH-NB-8159 | Solvent-borne amino silicone oil |
|---|---|---|
| Active content | ≥99% | 20–60% typical |
| Kinematic viscosity at 25°C | 500–1500 mm²/s per ISO 3104 | 200–2000 mm²/s per ISO 3104 |
| Amine value | 0.15–0.25 mmol/g | 0.20–0.60 mmol/g |
| D4/D5/D6 content | ≤0.1 wt% each | 0.5–3.0 wt% total typical |
| Flash point | ≥100°C per ISO 2592 | <40°C per ISO 2592 |
| VOC content as supplied | ≤5 g/L per ISO 11890-2 | 100–500 g/L per ISO 11890-2 |
Emulsification for textile finishing is carried out by charging deionized water at 20–25°C to a vessel followed by the addition of nonylphenol-free ethoxylated fatty alcohol emulsifier at 4–6% by mass relative to silicone oil. The RH-NB-8159 fluid is then added under agitation from a rotor-stator homogenizer operating at 3000–6000 rpm for 20–30 min. The resulting translucent emulsion typically exhibits a z-average particle diameter below 50 nm when measured by dynamic light scattering per ISO 22412:2017. Emulsion stability at 45°C for 7 days can be assessed by backscatter scanning; formulations outside this particle-size range may deposit on pad rolls and create uneven handle.
In padding operations, the diluted working emulsion is subjected to continuous shear in troughs and nip contacts. The product is compatible with nonionic emulsifiers and weak acid buffers. A laboratory padder recirculation trial at line speed 30–60 m/min may be used to evaluate shear stability. After 6 h of continuous recirculation, the z-average particle diameter should remain below 100 nm under ISO 22412:2017. This threshold is a practical control point; industrial temperature fluctuations above 45°C can accelerate particle coalescence. The use of softened water with total hardness below 200 mg/L as CaCO₃ is recommended to avoid flocculation caused by calcium and magnesium ions.
On a production stenter, the working emulsion is applied by padding or spraying. In a typical cotton interlock construction with a basis weight of 180–220 g/m², wet pickup is maintained between 65% and 80% using a two-roll padder at nip pressure 2.5–3.5 bar. The bath temperature is held at 20–35°C. Drying and curing are conducted at 130–150°C for 90–120 s. Higher temperatures accelerate film formation but may increase yellowing and volatile side-product generation above 180°C. The performance of the finish can be evaluated by hand feel using a Handle-O-Meter under ASTM D6828 and by tensile strength retention after finishing under ISO 13934-1.
Because the amine value of RH-NB-8159 is 0.15–0.25 mmol/g, the emulsion requires sufficient acid to fully protonate the amino groups. Acetic acid addition of 0.1–0.2% by mass of the bath is often sufficient, but the exact amount depends on water alkalinity and fabric pH. If the fabric carries residual alkali from scouring and bleaching, the bath pH may rise above 6.5 during continuous processing. Under these conditions, amine deprotonation can reduce emulsion stability and lower exhaustion. Neutralization with a nonionic acid buffer or replenishment of acetic acid may be required. Batch-to-batch variation in fabric porosity, residual peroxide, and hard water composition alters uptake; users should conduct a pilot run before full-scale production.
For leather surfaces and synthetic automotive interior materials, RH-NB-8159 may be diluted with deionized water at 1:20 to 1:50 parts by weight. The diluted liquor can be applied by low-pressure spray at 0.2–0.4 MPa or by foam applicator. Drying requires surface temperatures of 80–120°C for 5–15 min, depending on substrate heat capacity. Gloss and surface slip are measured by ISO 8295 for coefficient of friction and by standard gloss-meter methods such as ISO 2813. The absence of solvent does not eliminate the need for ventilation during thermal curing. Above 180°C, oxidative degradation of the siloxane backbone may generate formaldehyde and other carbonyl compounds; workplaces should maintain exposure below applicable limits for formaldehyde under OSHA 29 CFR 1910.1048 or equivalent regional standards.
In rubber and plastic mold release formulations, the product is commonly diluted to 0.5–1.0 parts per 100 parts water and sprayed through airless equipment at 0.3–0.5 MPa. The film reduces release force on injection molded parts. Published data for this specific configuration is limited, and mold geometry, polymer melt temperature, and clamp force influence release behavior. Users should evaluate release force using a laboratory ejection-force sensor or a standardized tensile fixture. Because the product is non-corrosive to steel at neutral pH, it can be used with standard stainless steel tanks; aluminum equipment is not recommended when acidic aqueous emulsions are stored for extended periods.
Storage and handling constraints for RH-NB-8159 are governed by its amine functionality and high active content. The product should not be blended with anionic surfactants such as linear alkylbenzene sulfonates without confirming emulsion stability, because charge neutralization can produce flocculation and uneven film formation. Total water hardness above 200 mg/L as CaCO₃ can reduce emulsion clarity and increase particle size. Storage below 5°C may cause temporary turbidity or viscosity increase; the fluid should be returned to 20–25°C with gentle mixing before use. The product should be kept away from strong bases with pH above 10 because condensation of silanol groups may occur during prolonged contact. The manufacturer assigns a shelf life of 12 months in unopened containers stored at 5–35°C.
Regulatory compliance for this product is not established by a single certificate alone. The supplier should provide lot-specific data for cyclic siloxanes, residual solvent, and amine content. The following compliance verification matrix summarizes the test bases and acceptance criteria that should appear on a certificate of analysis or product datasheet. Absence of a test value should not be interpreted as passage unless the manufacturer explicitly states compliance with the relevant regulation.
| Requirement | Test basis | Typical acceptance criterion |
|---|---|---|
| D4/D5/D6 cyclic siloxanes | REACH Annex XVII entry 70 | ≤0.1 wt% each |
| Ready biodegradability of diluted emulsion | OECD 301B | ≥60% ThOD within 28 days when manufacturer data is supplied |
| VOC content in 1:20 aqueous dilution | ISO 11890-2 | ≤10 g/L |
| Flash point | ISO 2592 | ≥100°C |
| Heavy metals where applicable | RoHS Directive 2011/65/EU Annex II | Pb ≤1000 mg/kg, Cd ≤100 mg/kg, Hg ≤1000 mg/kg |
The use of RH-NB-8159 in applications regulated as food-contact materials or medical devices has not been established in this document. If such use is proposed, the formulator must verify migration limits, purity requirements, and regional positive-list status under the applicable food-contact regulation such as FDA 21 CFR or European Union framework legislation. Because the product contains amino-functional polysiloxane, finished articles may require extraction testing for total organic carbon, cyclic siloxanes, and amine residues. Without these application-specific tests, compliance cannot be presumed from bulk material specifications alone.
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