Products
Products
Products
| HS Code | 480647 |
| Product Name | Dichloropropane |
| Chemical Name | 1,2-Dichloropropane |
| Molecular Formula | C3H6Cl2 |
| Molecular Weight | 112.99 g/mol |
| Cas Number | 78-87-5 |
| Appearance | Colorless to light yellow liquid |
| Odor | Sweet, chloroform-like odor |
| Density | 1.156 g/cm3 at 20°C |
| Boiling Point | 96.4°C |
| Melting Point | -100°C |
| Flash Point | 15.6°C (closed cup) |
| Vapor Pressure | 40 mmHg at 20°C |
| Water Solubility | 2.8 g/L at 20°C |
| Vapor Density | 3.9 (air=1) |
| Specific Gravity | 1.156 (water=1) |
| Refractive Index | 1.4381 at 20°C |
| Autoignition Temperature | 555°C |
| Log Partition Coefficient | 2.03 |
| Viscosity | 0.84 cP at 25°C |
As an accredited Dichloropropane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Dichloropropane, 200 liters, packaged in steel drums with corrosion-resistant lining, securely closed and labeled for flammable liquid transport. |
| Container Loading (20′ FCL) | 20′ FCL: Load approved drums of Dichloropropane, securely blocked, labeled, ventilated, segregated from oxidizers per dangerous goods rules. |
| Shipping | Dichloropropane (UN 1279) ships as a flammable liquid, Hazard Class 3, Packing Group II. Use approved drums or IBCs with proper hazard labels and segregation from oxidizers. Include shipping papers with UN number, quantity, and emergency response information. Observe ventilation, grounding, and spill-containment protocols during transport. |
| Storage | Store dichloropropane in tightly sealed, properly labeled containers in a cool, dry, well-ventilated area away from heat, sparks, open flames, and direct sunlight. Keep separated from strong oxidizers and reactive chemicals. Use explosion-proof equipment and ground containers during transfer. Ensure adequate secondary containment to prevent spills, and follow local hazardous material storage regulations. |
| Shelf Life | Dichloropropane has a shelf life of several years if stored tightly sealed, away from heat, ignition sources, and incompatible materials. |
Application data below refer to the 1,2-dichloropropane isomer (CAS 78-87-5), a chlorinated C3 intermediate and solvent with molecular weight 112.99 g/mol, boiling point 96–97°C, density 1.16 g/cm³ at 20°C, and flash point 15°C. The scenarios are limited to industrial operations in which closed handling, solvent recovery, and worker-exposure controls form part of the process design. Consumer aerosol applications and food-contact solvent uses are excluded unless specifically indicated.
The principal industrial outlet for 1,2-dichloropropane is pressure amination to propane-1,2-diamine. Reactor trains are designed around a 316L stainless steel autoclave or tubular reactor rated to 10 MPa and 180°C, with an ammonia-to-DCP molar ratio maintained between 8:1 and 15:1. The excess ammonia does not function as a catalyst; it is a reactant that suppresses secondary amine formation and branched oligomer byproducts through kinetic competition with the second nucleophilic substitution. Reactor effluent contains free ammonia, ammonium chloride, water, and the crude diamine, and is sent to an ammonia flash drum before salt neutralization. Published plant data for exact ratio optimization in this specific configuration is limited to process-license documentation, because reactor residence time, agitation power per unit volume, and back-mixing behaviour change the byproduct distribution independently of the feed ratio.
Compliance for 1,2-propanediamine output depends on the terminal resin system. When the diamine is converted into aliphatic epoxy hardeners for indirect food-contact can coatings, the finished coating is evaluated under 21 CFR 175.300. EU placement of the amine and its derivatives requires REACH registration for the relevant tonnage band. Pressure-retaining equipment is documented under ASME BPVC Section VIII Division 1, and process piping is specified to ASME B31.3. DCP is metered into the amination loop at 0.5–2.0 t/h per reactor train, with ammonia feed controlled by mass-flow devices having an accuracy of ±0.25%. The addition ratio is process-control data rather than a fixed recipe value, because free water ingression promotes hydrolysis of both DCP and product amine salts, shifting acid consumption and ammonium chloride crystal loading in downstream filters.
The purification sequence strips excess ammonia, neutralizes ammonium chloride with 32 wt% aqueous sodium hydroxide, filters precipitated brine, and fractionates the crude diamine under vacuum at 20–30 kPa absolute. Two-stage fractional distillation yields 99.0–99.7 wt% propane-1,2-diamine, with overhead reflux ratio adjusted to hold a colour value below 10 Hazen. The diamine is then converted into aliphatic epoxy curing agents for ambient-cure industrial coatings, polyamide hot-melt adhesives, oilfield corrosion inhibitors, and intermediates for antiparasitic active ingredients.
During precision cleaning of hardened steel injector bodies, hydraulic manifold components, and drawn brass fittings, 1,2-dichloropropane is used in closed-loop vapour degreasing equipment with a freeboard ratio above 0.75 and secondary brine-cooled condensation coils operating between −25°C and −20°C. The cleaning line is specified under EN 12921-1 and EN 12921-2 for machinery using halogenated solvents; component cleanliness is validated according to ISO 16232-10:2018, and solvent acid acceptance is measured by ASTM D2106. Because the flash point is 15°C, electrical drives, level sensors, and solvent pumps inside the vapour zone are classified under IEC 60079-10-1 hazardous-area requirements. Sump stabilizer concentration is maintained at 0.02–0.06 wt% of the sump charge, using an epoxide acid acceptor and a buffering co-stabilizer package. The stabilizer addition ratio is adjusted after each 8 h operating shift according to acid acceptance and chloride titre, not by fixed volume replacement alone, because thermal cracking products accumulate in the sump and distort pH response.
Workpieces pass through a three-stage cycle: boiling immersion, ultrasonic agitation at 25–40 kHz, and final vapour rinse. Distillate flows to a water separator; 1,2-dichloropropane has a water solubility of approximately 0.3 g/100 mL at 20°C, so the separator is designed for gravity decanting rather than coalescer-free discharge. Recovery loops route waste solvent through activated carbon beds before atmospheric venting, and sump sludge is drained under closed-loop vacuum to avoid operator contact. Terminal workpieces include common-rail diesel injector nozzles, aerospace hydraulic fittings, and transmission solenoid valves. Aluminium alloys containing magnesium above 0.5 wt% are excluded from this solvent system unless chloride-residue tests are completed after cleaning.
| Control parameter | Operating range | Reference method |
|---|---|---|
| Freeboard ratio | >0.75 | EN 12921-1 |
| Brine coil temperature | −25°C to −20°C | Equipment specification |
| Stabilizer sump concentration | 0.02–0.06 wt% | ASTM D2106 |
| Sump pH | 6.0–7.5 | Solvent-compatible pH electrode |
Solvent-borne contact adhesives based on chlorinated rubber with 64–65 wt% chlorine content and neoprene of Mooney viscosity 50–110 ML(1+4) 100°C use 1,2-dichloropropane in the solvent portion. The solvent density of 1.16 g/cm³ at 20°C affects pump calibration, coating weight control, and settlement behaviour on high-speed lamination lines. Unlike low-density aromatic diluents, DCP shifts the solvent blend to a higher specific gravity, which must be accounted for in mass-flow-based coating systems; volumetric flow settings left unchanged from toluene-based formulations produce different dry-film adhesive weights on release liners and substrate webs.
Formulation VOC limits are defined by GB 33372-2020 for adhesives and sealants; solvent-emission calculations for EU installations follow Directive 2010/75/EU. Viscosity is determined with a rotational viscometer according to ISO 3219. 1,2-Dichloropropane is added at 12–22 wt% of the wet formulation, depending on the chlorinated rubber grade, neoprene blend ratio, and target solids. Final viscosity is adjusted to 600–1200 mPa·s at 25°C, measured with a Brookfield LV spindle 3 at 30 rpm. Addition above 22 wt% lowers the formulated flash point below process-safety limits and increases solvent retention in thick films, while addition below 12 wt% produces incomplete resin wetting and visible agglomerates after high-shear dispersion.
Mixing is performed in a jacketed high-shear dissolver with an explosion-proof drive. Resin is pre-soaked in the DCP fraction for 2–4 h, then agglomerates are dispersed at 900–1200 rpm with jacket temperature held at 15–18°C. The adhesive is applied by notched trowel or air-assisted spray, forced-air flashed at 55–65°C, and laminated under nip pressure of 0.4–0.8 MPa. Finished product types include rubber-to-metal bonding adhesives for vibration dampers, chlorinated rubber maintenance coatings for industrial bunds, and lamination adhesives for acoustic insulation panels.
Non-consumer coating removers formulated with 1,2-dichloropropane are used on epoxy and polyurethane films applied to steel and cast iron. The solvent content is constrained by phase stability with paraffin wax evaporation retarders; loadings of 25–40 wt% DCP are typical, while higher loadings separate the wax film, reduce dwell-time uniformity, and produce solvent pooling on vertical surfaces. Industrial use falls under EU Directive 2004/37/EC for carcinogen and mutagen exposure control. U.S. workplace air limits are stated in 29 CFR 1910.1000 Table Z-1 as an 8 h TWA of 75 ppm. The stripper is not marketed to consumers because closed-loop handling, air monitoring, and liquid waste disposal are required controls.
Thickening is achieved with fumed silica at 0.8–1.5 wt% and paraffin wax at 0.5–1.0 wt%. The DCP fraction is 25–40 wt%, with the balance composed of dibasic esters and aromatic hydrocarbon diluents selected to maintain a gel structure at 15–30°C. The production process is batch-based: solvents are charged first, wax and silica are added under low-speed dispersion, and the batch is held for viscosity stabilization before packaging into sealed steel drums. Application lines use airless spray or hand trowel methods, with dwell time of 15–40 min for dry film thickness up to 500 µm. Swollen coating is removed mechanically with brass scrapers to avoid sparking. Spent stripper and removed coating residues are collected in steel trays and sent to vacuum solvent recovery at 20–25 kPa. Typical workpieces include railcar body panels, structural steel bridge sections, and marine engine beds before repainting.
Across wax de-oiling and resin fractionation operations, 1,2-dichloropropane functions as a selective solvent for low-molecular-weight oil fractions in closed extraction columns. The process solvent is not used for food-grade waxes; it is confined to technical wax streams and tackifier resins. Extraction facilities operate under EU ATEX 2014/34/EU for explosion protection, with zone classification driven by the solvent flash point of 15°C. REACH registration and workplace exposure documentation are required for the solvent volume handled. Solvent-to-feed mass ratio is set between 3:1 and 6:1, depending on the oil content of the slack wax. Extraction temperature is controlled at 35–50°C; higher temperatures raise oil yield but darken the wax fraction and increase chloride transfer into recovered extract fractions.
Countercurrent extraction uses a vertical packed column with solvent introduced at the bottom and wax slurry at the top. The extract is distilled in multi-effect evaporators at 15–25 kPa; recovered DCP is dried over molecular sieves to water content below 50 ppm before reuse. The raffinate is steam-stripped to residual solvent below 10 ppm. Terminal products include de-oiled microcrystalline wax for hot-melt coatings, paraffin wax fractions for industrial release agents, and low-chlorine tackifier resins for adhesive compounding.
Competitive Dichloropropane prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to sales3@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: sales3@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Within the chlorinated C3 solvent class, 1,2-dichloropropane is supplied under the generic model designations DCP-S and DCP-I, where DCP-S identifies stabilized solvent service and DCP-I identifies low-moisture chemical intermediate use. The compound is identified by CAS 78-87-5, molecular formula C3H6Cl2, and molar mass 112.99 g/mol. Bulk solvent specifications commonly require 1,2-dichloropropane purity ≥ 99.0 % for DCP-S and ≥ 99.5 % for DCP-I, moisture ≤ 0.03 wt% by ASTM E203, acidity as HCl ≤ 0.001 wt% by ASTM D1613, color ≤ 10 APHA by ASTM D1209, and density at 20 °C of 1.155–1.160 g/cm³ by ASTM D4052. Distillation range is controlled under ASTM D1078, with initial boiling point typically 94.0 °C and dry point 98.0 °C for solvent grade. The material is transported as a flammable liquid; bulk storage tanks are equipped with nitrogen padding or equivalent vapour control because the closed-cup flash point lies below ambient temperatures in many climates. Incoming lots should be tested before blending because stabilizer concentration, typically 0.005–0.1 wt%, changes acid acceptance and drying behaviour.
Chemical intermediate service uses the low-moisture DCP-I model for controlled hydrolysis to propylene glycol and for chlorinated building block syntheses in agrochemical and organosilicon routes. The compound was formerly co-formulated with 1,3-dichloropropene as a soil fumigant, but that agricultural use has been withdrawn or heavily restricted in multiple jurisdictions under EU Regulation (EC) No 1107/2009 and subsequent non-renewal decisions. In heated continuous distillation, moisture above 0.03 wt% is a critical boundary because hydrolysis forms hydrochloric acid and accelerates reboiler corrosion; glass-lined or PTFE-lined reboilers with nitrogen blanketing are used to maintain overhead purity above 99.5 %. This route is not interchangeable with 1,3-dichloropropane isomer chemistry despite equal molecular mass, because the steric arrangement of the chlorine atoms changes reaction selectivity and boiling point. The 1,3-isomer is a higher-boiling linear molecule used predominantly as a synthesis intermediate; it is not a direct solvent substitute where lower boiling point and lower viscosity are required.
The normal boiling point is 96.4 °C at 101.325 kPa, melting point is -100.4 °C, and density at 20 °C is 1.156 g/cm³. Dynamic viscosity at 20 °C is approximately 0.79 mPa·s. Vapour pressure at 20 °C is approximately 5.37 kPa, while closed-cup flash point values reported in supplier literature range from 15.6 °C to 21 °C depending on isomer purity and test method. The vapour is denser than air, with relative vapour density approximately 3.9. This creates floor-level accumulation hazards in unventilated sumps and requires floor-level exhaust. The evaporation rate is slower than dichloromethane and faster than perchloroethylene; this places the product in an intermediate processing window where coating penetration time is extended but condenser recovery is less demanding than for dichloromethane. Kauri-butanol solvency data from ASTM D1133 shows limited reproducibility for the 1,2-isomer across supplier literature, so solvency must be validated for each resin system rather than extrapolated from dichloromethane or trichloroethylene data. For flammable-liquid classification, the flash point places the material under NFPA 30 Class IB rules; electrical area classification follows NFPA 70 Class I, Division 2 or ATEX Zone 2 where vapour may accumulate under 2014/34/EU.
Substitution is not a drop-in change. The higher boiling point requires raising bath temperature to 55–65 °C to approach the solvency index of dichloromethane in many alkyd and epoxy systems, but the closed-cup flash point of 16 °C means the bath must be inerted with nitrogen and equipped with automatic high-temperature interlocks. A sealed 316L stainless steel immersion tank is operated with a minimized liquid-vapour interface, a water-cooled condensing coil, and a freeboard ratio above 0.75 to meet 40 CFR Part 63 Subpart T. Published data for specific crosslinked coating removal rates is limited; producers should not extrapolate dichloromethane immersion times without pilot trials. The material is incompatible with strong aqueous alkali and amine-based stripper additives because dehydrochlorination can proceed exothermically, generating chloropropenes and hydrogen chloride; the same incompatibility applies to direct contact with finely divided aluminium or strong reducing agents. When replacing methylene chloride in existing carbon steel tanks, the specification should verify moisture and acid values because residual water above 0.03 wt% creates rapid pitting at the liquid line and can significantly reduce bath life in inadequately dried equipment. Published data for this specific configuration is limited; therefore users should install pH and chloride monitoring on the water separator.
In single-sump vapour degreasing equipment, the higher boiling point imposes a longer heat-up cycle and a higher heat flux than methylene chloride. The freeboard ratio is regulated under 40 CFR Part 63 Subpart T for halogenated solvent cleaning; the minimum freeboard ratio of 0.75 and room-draft controls are mandatory operating boundaries. Condensing coil outlet temperature should be held below 15 °C to reduce solvent loss; loss per cycle increases sharply when freeboard ratio drops below 0.75 because the dense vapour layer is not contained. Bonding and grounding must follow NFPA 77, with resistance to ground less than 1 Ω. Solvent stabilizer depletion is a failure mode in open-top equipment: when water and air contact continue, acidic degradation products increase and may attack aluminium parts or steel heating elements. Equipment in aluminium service must be validated against supplier stability data, and acid acceptance is monitored by ASTM D1613. The flash point imposes electrical classification changes; conventional methylene chloride degreasers with open immersion heaters, non-explosion-proof pumps, and standard switchgear cannot be converted without equipment change.
For resin cleanup and adhesive thinning, the solvent is typically blended rather than used neat. Low water content is required because water partitions into the lower phase and reacts slowly with the chlorinated backbone, releasing hydrochloric acid. Closed tanks with nitrogen padding and PTFE seals maintain stability over 90-day storage; open containers under ambient humidity above 60 % require pre-drying of the solvent before reuse. Batch-to-batch variance in stabilizer concentration, typically 0.005–0.1 wt%, changes acid acceptance; therefore incoming lots should be tested by ASTM D1613 and ASTM E203 before release to high-volume automated mixing. Published data for this specific configuration is limited for polyurethane and epoxy adhesive systems; users should verify bond strength retention according to ASTM D3164 or equivalent after solvent evaporation, and should not assume equivalence with methylene chloride without lap-shear data.
In substitution screening against other halogenated solvents, the primary decision points are flash point, boiling point, stabilizer chemistry, and air emission controls. Trichloroethylene and perchloroethylene are nonflammable and have higher densities, but their higher boiling points demand greater reboiler energy and their vapour pressures create different condensation demands. Dichloromethane is nonflammable and lower-boiling, enabling faster room-temperature evaporation but requiring more aggressive condenser cooling and producing a more severe acute occupational exposure profile under 29 CFR 1910.1000. 1,2-dichloropropane sits between these products in distillation range while introducing a closed-cup flash point that mandates explosion-proof equipment. This profile may be advantageous where a higher boiling point than dichloromethane is required to reduce solvent loss in warm environments, but only if the process can meet flammable-liquid safety requirements and the stabilizer package can control hydrolytic acidity.
The following specifications are typical for the two model designations; they are not universal and must be confirmed against the supplier certificate of analysis. The comparative physical data in Table 2 are compiled from public safety data sheets and standard reference data; lot-specific values can shift with stabilizer packages.
| Parameter | Test method | DCP-S typical | DCP-I typical |
|---|---|---|---|
| Purity | ASTM D2593-18, modified for chlorinated solvents | ≥ 99.0 % | ≥ 99.5 % |
| Moisture | ASTM E203 | ≤ 0.03 wt% | ≤ 0.02 wt% |
| Acidity as HCl | ASTM D1613 | ≤ 0.001 wt% | ≤ 0.0005 wt% |
| Color | ASTM D1209 | ≤ 10 APHA | ≤ 5 APHA |
| Density at 20 °C | ASTM D4052 | 1.155–1.160 g/cm³ | 1.155–1.160 g/cm³ |
| Distillation range | ASTM D1078 | 94.0–98.0 °C | 94.5–98.0 °C |
| Property | 1,2-Dichloropropane | Dichloromethane | Trichloroethylene | Perchloroethylene |
|---|---|---|---|---|
| CAS number | 78-87-5 | 75-09-2 | 79-01-6 | 127-18-4 |
| Molar mass, g/mol | 112.99 | 84.93 | 131.39 | 165.83 |
| Boiling point, °C | 96.4 | 39.6 | 87.2 | 121.2 |
| Density at 20 °C, g/cm³ | 1.156 | 1.326 | 1.46 | 1.62 |
| Vapour pressure at 20 °C, kPa | 5.37 | 47 | 7.8 | 1.9 |
| Flash point, closed cup, °C | 16 | none | none | none |
The CLP Regulation (EC) No 1272/2008 classification for 1,2-dichloropropane includes Flam. Liq. 2, H225; Acute Tox. 4, H302/H312/H332; Skin Irrit. 2, H315; Eye Irrit. 2, H319; STOT SE 3, H335; STOT RE 2, H373; and Aquatic Chronic 3, H412. The occupational exposure limit under 29 CFR 1910.1000 Table Z-1 is an 8-hour time-weighted average of 75 ppm with skin notation; this is a compliance threshold, not a selection guide. Unlike dichloromethane, the material is flammable and therefore requires additional controls for storage and electrical classification; the carcinogenicity profile and harmonized entries for 1,2-dichloropropane should be confirmed against the current ECHA C&L inventory before substitution. Unlike perchloroethylene, the lower boiling point reduces distillation energy demand but the presence of a closed-cup flash point removes the option of non-explosion-proof open equipment. Product stewardship documentation should be reviewed for REACH registration and authorization status in Europe; specific uses may be restricted and supplier confirmation is required for professional or industrial applications.
