Products
Products
Products
| HS Code | 983166 |
| Appearance | Clear liquid |
| Color | Water white |
| Density At 15 C | 0.87 - 1.00 g/cm³ |
| Boiling Range | 150°C - 320°C |
| Flash Point | Above 38°C (closed cup) |
| Aromatic Content | Greater than 99% |
| Evaporation Rate | Slow (less than 0.5 relative to n-butyl acetate = 1) |
| Viscosity At 25 C | 1.5 - 8.0 mPa·s |
| Aniline Point | 15°C - 30°C |
| Kauri Butanol Value | Greater than 90 |
| Freezing Point | Below -30°C |
| Sulfur Content | Very low (less than 5 ppm) |
As an accredited High-Boiling Aromatic Solvent factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | High-Boiling Aromatic Solvent supplied in 200-litre steel drums, sealed with leak-proof lids and labeled with hazard warnings. |
| Container Loading (20′ FCL) | Load 20′ FCL with securely sealed drums/IBCs of high-boiling aromatic solvent; upright, braced, ventilated, with flammable labels and no incompatible cargo. |
| Shipping | High-boiling aromatic solvent requires careful shipping as a combustible liquid. Use sealed, UN-approved containers, upright and secure. Ensure proper hazard labeling and documentation per IMDG/ADR regulations. Transport on ventilated trucks, away from ignition sources, moisture, and incompatible oxidizers. Follow all applicable environmental and safety protocols. |
| Storage | Store in a cool, dry, well-ventilated area away from ignition sources, open flames, and direct sunlight. Keep containers tightly closed and upright, using approved materials resistant to aromatics. Ensure proper grounding and bonding during transfer. Avoid contact with strong oxidizers and moisture. Inspect containers regularly and follow all local regulations for safe handling. |
| Shelf Life | Stable for years if stored sealed, cool, dry, and away from ignition sources. |
Medium-oil alkyd resins with acid values 8–12 mg KOH/g per ASTM D465 are let down with high-boiling aromatic solvent at 15–28 wt% after pigment dispersion. Pigment dispersion itself uses a high-speed disperser with tip speed 18–22 m/s; the solvent is post-added after the mill-base reaches a Hegman grind of 5–6 per ASTM D1210. Viscosity is then reduced to 22–26 s in an ISO 2431 4 mm flow cup at 20 °C, a range that allows airless spray and brush application without excessive solvent retention. The high-boiling aromatic solvent fraction maintains the alkyd-solvent compatibility across the flash-off interval, which is critical when the primer is air-dried in enclosed workshops with limited air exchange.
Sag resistance measured by ASTM D4400 using a multi-notch applicator is particularly sensitive to the high dry point of this solvent class. A wet film of 250 µm can pass without sag if evaporation is not excessively delayed; however, dry point above 200 °C prolongs flow-out after airless spray and increases dust pick-up under production conditions. Through-dry time per ASTM D1640 is frequently extended beyond 24 h at 10 °C, and force-drying below 60 °C can produce solvent pop and pinholes because the low-boiling tail has already left the film while mid-range aromatics remain trapped beneath a partially crosslinked surface skin. A staged oven ramp of 30–40 °C/min with final metal temperature 80 °C is required to achieve 35 µm dry-film builds without surface defects under ASTM D1640 drying-evaluation protocols.
High-boiling aromatic solvent acts as a thinning carrier for deep-draw lubricants containing chlorinated paraffin and sulfurized fatty ester extreme-pressure additives. The kinematic viscosity of the final compound is maintained at 10–40 mm²/s at 40 °C by ASTM D7042, enabling uniform application through low-pressure spray nozzles with 0.3–0.8 mm orifices. Flash point by ASTM D93 is kept above 60 °C to allow open-tank use without nitrogen blanketing in non-ventilated press shops. The solvent dissolves up to 25 wt% sulfurized lard and 15 wt% chlorinated paraffin without forming haze after 72 h at −5 °C, a cold-stability boundary that determines whether the compound can be shipped in unheated bulk containers during winter months.
Four-ball extreme-pressure tests under ASTM D2783 are used to verify load-carrying capacity; commercial deep-draw formulations often specify a minimum weld load of 250 kg and a load wear index above 35. At the same time, seal compatibility is evaluated by ASTM D471 using nitrile rubber specimens; volume swell must remain below 10 % after 70 h at 23 °C. Aromatic solvents with high solvency can exceed this limit when seal acrylonitrile content is below 18 %. When the solvent fraction exceeds 40 wt%, spray-line seals and packings require more frequent inspection than the standard maintenance interval, but no universal replacement cycle can be assigned without the pump manufacturer’s elastomer compatibility data.
Positive displacement injection pumps metering asphaltene inhibitor into multiphase wellstreams at 50–500 ppm require carrier fluids with a pour point below −20 °C and a closed-cup flash point above 60 °C. High-boiling aromatic solvent with a distillation range of 230–280 °C and aromatic content above 98 vol% by ASTM D1319 satisfies both surface-storage and cold-weather constraints. The flash point above 60 °C places the carrier fluid under NFPA 30 Class IIIA or IIIB storage provisions, reducing flammable-vapour detection requirements at ambient loading racks. Commercial alkylphenol-formaldehyde ethoxylate resins are dissolved at 10–30 % active content; phase stability is checked after 72 h at −10 °C and 40 °C because precipitation in the storage tote blocks the chemical injection skid before the wellhead.
Asphaltene dispersancy of the formulated inhibitor is confirmed by a n-heptane precipitation test based on ASTM D3279. A dosage is considered insufficient if asphaltene onset occurs below 10 vol% heptane at 25 °C; some commercial inhibitors shift the onset by 10–20 vol% heptane, but field brines with high iron content or dissolved oxygen may require re-optimization. Produced-water compatibility is run at 80 °C with 25 % water cut to preclude stable invert emulsions. The aromatic solvent fraction is charged into capillary injection lines with internal diameters of 6–12 mm; its viscosity below 4 mm²/s at 40 °C by ASTM D7042 limits frictional losses in 50 m lines to levels that typical chemical injection skids designed for 10 bar differential can accommodate without additional booster pumps.
Heatset web offset inks use high-boiling aromatic solvent as a diluent added in 1–3 wt% increments to adjust tack from 4 to 6 at 30 °C per ISO 12634. The ink is applied to coated paper at 1.5–2.5 g/m² ink film weight; the solvent increases wetting of the substrate and maintains open time on the press. However, solvent removal is not completed on the printing units. The dryer oven air temperature must be raised to 160–180 °C for a web exit temperature of 90–110 °C, because the solvent’s high dry point near 278 °C requires thermal diffusion from the centre of the printed film.
Retained solvent on the delivery pile above 300 mg/m² generates blocking, smearing, and residual odour in folded signatures. Routine quality control uses a gas chromatographic headspace method calibrated against ASTM D3257 for aromatic hydrocarbon distribution. Coldset operations cannot use this solvent because ambient pile temperatures remain below 40 °C and evaporative loss is negligible; the solvent remains in the printed sheet for weeks and creates tacking, odour, and transfer to adjacent pages. For heatset printers, the press operator reduces diluent addition if the dryer is limited to 140 °C; otherwise the retained solvent exceeds the blocking limit before the folding unit.
High-boiling aromatic solvent is used to dissolve oxidised petrolatum, calcium sulfonate, and lanolin derivatives in temporary protective films. The solvent is blended at 20–40 wt% into the formulation to reduce wax viscosity and allow dip, brush, or airless spray application at 20–25 °C. Salt-spray resistance is verified by ASTM B117 with 5 % sodium chloride fog at 35 °C; a 25 µm dried film over grit-blasted steel must remain free of excipient rust for 72–120 h, depending on the outdoor storage class specified by the end user. The solvent also provides wetting of lightly oiled surfaces, but the surface preparation process must limit residual oil film weight below 10 mg/m² or early adhesion loss may occur under accelerated weathering.
A storage-stability conflict arises when paraffin wax content exceeds 15 wt%. The aromatic fraction disrupts wax crystal packing during 6-month warehouse cycling between 5 °C and 40 °C, producing syneresis and a soft sediment that cannot be reincorporated by air-motor drum mixers. Settlement is assessed by ASTM D869 using a volumetric scraper; formulations failing the method show more than 2 mL clear supernatant per 500 mL sample. Replacement of part of the wax with a microcrystalline grade of higher branched-chain content reduces this incompatibility because the branched structure accommodates aromatic ring intercalation without collapsing the gel network.
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High-Boiling Aromatic Solvent is supplied as a C9–C10 heavy aromatic naphtha under generic designations A150 and A200, with commercial equivalents including ShellSol A150, Solvesso 150, and heavy aromatic solvent naphtha (petroleum) CAS 64742-94-5. A150-type material is defined by a distillation range of 182–185 °C initial boiling point to 205–210 °C dry point when measured by ASTM D86. A200-type material extends the dry point to 277–295 °C. Density at 15.5 °C by ASTM D4052 is 0.895–0.915 g/cm³ for A150 and 0.915–0.935 g/cm³ for A200. Flash point by ASTM D93 is 60–66 °C for A150 and 96–104 °C for A200. Aromatic content determined by ASTM D1319 or GC-MS exceeds 99 % by volume. Kauri-butanol value by ASTM D1133 is 90–95, aniline point by ASTM D611 is 15–20 °C, and evaporation rate by ASTM D3539 is 0.06–0.08 relative to n-butyl acetate. The product functions as a high-solvency diluent in alkyd, acrylic, polyester and epoxy systems, as carrier fluid in agrochemical emulsifiable concentrates, and as industrial cleaning fluid where extended wet-film open time is required.
The primary differentiation is solvency strength. Kauri-butanol values of 90–95 for A150-type fluid compare with 30–40 for low-aromatic white spirit and 20–25 for isoparaffinic hydrocarbon fluids. Aniline point is inversely related to aromatic content; a value of 15–20 °C indicates strong interaction with polar resins, whereas aliphatic diluents commonly report aniline points above 40 °C. Medium-boiling A100-type aromatic naphtha has an initial boiling point near 160 °C and a dry point below 182 °C; its evaporation rate is approximately 0.18–0.22 relative to n-butyl acetate. A150-type high-boiling aromatic solvent therefore remains in film-forming systems for a longer interval, reducing sagging in dip coatings but also extending force-flash times. Compared with oxygenated solvents such as 2-butoxyethanol or cyclohexanone, the high-boiling aromatic solvent has no hydroxyl or carbonyl functionality; it is therefore non-reactive with isocyanate crosslinkers in two-component polyurethane formulations but is a stronger solvator of non-polar binders than an alcohol or glycol ether.
Receiving and storage of A150-type high-boiling aromatic solvent is conducted in fixed-roof or internal-floating-roof carbon steel tanks with nitrogen blanketing where flash point 60–66 °C brings the fluid into the flammable liquid category under GHS H226. Production-scale batch records from alkyd resin thinning operations indicate that tank recirculation through positive-displacement gear pumps with 20–30 m³/h capacity does not require heating at ambient temperatures above 10 °C; viscosity at 25 °C by ASTM D445 is 1.0–1.5 mm²/s. When the same fluid is unloaded at 5 °C or below, viscosity can rise above 2.5 mm²/s, and diaphragm pump seals made from natural rubber or EPDM show swelling and loss of compression set within 72 hours. Nitrile rubber with acrylonitrile content of at least 28 % or fluorocarbon elastomer FKM is specified for pump diaphragms, hose linings, and tanker gaskets. Static dissipative piping and grounding are mandatory because the fluid has low electrical conductivity and can accumulate charge during high-velocity transfer above 1 m/s. Published data for charge relaxation times in this specific commercial blend are limited, but conductive hoses with resistance below 10⁶ Ω are standard.
Specification compliance is confirmed against the following test matrix. Variation in feedstock from catalytic reforming units can shift the aniline point by ±2 °C and the flash point by ±3 °C; therefore, blending of A150 and A200 tanks is performed only after laboratory verification of miscibility and distillation overlap.
| Property | Test Method | A150-type range | A200-type range | Low-aromatic white spirit |
|---|---|---|---|---|
| Distillation range | ASTM D86 | 182–210 °C | 232–295 °C | 150–200 °C |
| Flash point, closed cup | ASTM D93 / ISO 2719 | 60–66 °C | 96–104 °C | 40–45 °C |
| Density at 15.5 °C | ASTM D4052 | 0.895–0.915 g/cm³ | 0.915–0.935 g/cm³ | 0.780–0.810 g/cm³ |
| Aromatic content | ASTM D1319 / GC-MS | >99 % | >99 % | 15–20 % |
| Kauri-butanol value | ASTM D1133 | 90–95 | 95–98 | 30–40 |
| Aniline point | ASTM D611 | 15–20 °C | 14–19 °C | 40–70 °C |
| Evaporation rate, n-butyl acetate = 1 | ASTM D3539 | 0.06–0.08 | 0.01–0.02 | 0.10–0.20 |
Addition to medium-oil alkyd enamels at 5–15 wt% of resin solids reduces high-shear viscosity and improves flow without the excessive evaporation associated with A100-type fractions. In forced-air flash-off of solventborne alkyd primers, the A150 fraction extends wet-film open time by 3–6 minutes at 40–50 °C compared with medium-boiling A100 at equivalent film thickness, but requires flash-off zone exhaust volume to be raised to maintain residual solvent below 0.5 % before oven curing. Pigment dispersion concentrates based on phthalocyanine blue and carbon black are milled in high-shear bead mills with the aromatic solvent because the aromatic ring solvates the pigment surface and lowers dispersant demand. However, the same aromaticity can extract plasticizer from PVC gaskets in mill chambers. For airless spray applications, sag resistance is improved by the lower evaporation rate, but the formulation chemist must rebalance organoclay or fumed silica rheology modifiers because solvent association with quaternary ammonium clay modifiers can alter yield stress development. Processing window studies in coil coating lines indicate that A150-type material used as tail solvent in polyester-melamine formulations is generally limited to 1–3 % of total solvent, as higher addition levels can exceed residual solvent specifications after 30 seconds at 250 °C cure. Published data for exact peak metal temperature profiles in high-speed coil coating lines is limited.
Agrochemical emulsifiable concentrates formulated with A150-type solvent use the high aromaticity to dissolve active ingredients with melting points above 80 °C and low solubility in paraffinic carriers. Emulsion stability after dilution in 5 °C water is evaluated by CIPAC MT36. The aromatic solvent interacts with anionic calcium dodecylbenzene sulfonate emulsifiers differently than isoparaffins; phase separation or creaming may occur if the emulsifier blend is not rebalanced. Production-scale high-shear mixing in rotor-stator homogenizers at 30–50 Hz is used to dissolve technical actives at 40–50 °C. The solvent attacks nitrile rubber with low acrylonitrile content (18 %) used in older packaging lines; high-density polyethylene or fluorinated containers are specified for long-term contact. The low water solubility of 0.04–0.08 g/L supports oil-phase retention during emulsification. Replacement of isoparaffinic oil at equal weight in EC formulations can alter phytotoxicity profiles on sensitive crops, and published data for specific crop safety thresholds is limited.
In oilfield production chemicals, high-boiling aromatic solvent is used as a carrier in paraffin and asphaltene dispersants. Its aromatic fraction solvates asphaltenes more effectively than aliphatic mineral oil; field formulations typically contain 10–30 % of the aromatic solvent. In metalworking fluids, low addition of 2–5 % improves removal of chlorinated paraffin in solvent wipe-down but is not suitable for open wet lines where operators are exposed to vapour without local exhaust ventilation. In foundry binders, aromatic solvent is used as a solvent for phenolic urethane cold-box binders; published data for specific core tensile strength correlations is limited.
| Compliance area | Standard / reference | Typical verification |
|---|---|---|
| Distillation | ASTM D86 | Initial boiling point and dry point within stated range |
| Flash point | ASTM D93 / ISO 2719 | Closed cup 60–66 °C |
| Density | ASTM D4052 / ISO 12185 | 0.895–0.915 g/cm³ at 15.5 °C |
| Aromatic content | ASTM D1319 / UOP 870 | >99 % |
| Color, Pt-Co | ASTM D1209 | <25 |
| Benzene content | ASTM D6229 or GC-MS | <10 ppm for low-benzene grades |
| Naphthalene content | UOP 870 / internal GC | <1 wt% for ND grades |
| Sulfur | ASTM D5453 | <5 ppm |
| GHS classification | EC 1272/2008 CLP | H226, H304, H315, H319, H411 categories supplier-specific |
Because the product is a UVCB substance under REACH, the exact CLP classification varies with the distillation interval and naphthalene content of the refinery stream. Users should verify the harmonised classification and registration status for the specific CAS number and REACH use descriptor supplied in the extended safety data sheet.
Pump and gasket compatibility is a critical constraint. Aromatic hydrocarbons swell EPDM, natural rubber, SBR, and butyl rubber through absorption and plasticisation; prolonged contact with EPDM tanker hoses results in volume swell above 40 % and tensile loss. Nitrile rubber with acrylonitrile content 28–50 % or FKM is preferred. Polyethylene and polypropylene are structurally stable for short-term storage but can undergo environmental stress cracking at welded seams if the solvent contains residual naphthalene above 1 wt%. Stainless steel 316 and carbon steel are acceptable for tanks; copper and copper alloys are avoided in solvent lines where trace sulfur may promote tarnishing by H₂S. The solvent should not be stored near strong oxidisers, nitric acid, or halogens. Avoid mixing with amine-based additives in two-component systems where residual acid catalysts are present because amine neutralisation alters cure response. Storage under nitrogen or inert gas is recommended if the product is held above 30 °C, and bulk storage tanks should be equipped with emergency vents sized to ISO 28300 or API 2000.
In high-solids two-component polyurethane coatings, high-boiling aromatic solvent is used at 3–7 % of total solvent to lower viscosity without reacting with isocyanate groups. Gel time measured by ISO 9514 is not shortened by solvent addition at these levels, although dilution reduces the crosslink density at the film surface. For high-solids epoxy floor coatings, aromatic solvent additions of 5–10 % improve filler wetting and allow quartz filler loading up to 65 % by weight in high-shear dispersions. Residual solvent retention in thick films at 10 °C cure can exceed 7 days, which imposes an operational boundary for cold-weather floor installations.
