Technical Specifications
| Property | Unit | Typical Value | Test Method |
|---|---|---|---|
| Appearance | Brownish red / green liquid | Visual | |
| Density at 20 °C | kg/m³ | 1005 | ASTM D4052 |
| Viscosity at 100 °C | mm²/s | 150 | ASTM D445 |
| Flash Point | °C | >190 | ASTM D93 |
| Molybdenum | % | 6.28 | ASTM D4951 |
| Nitrogen | % | 1.83 | ASTM D3228 |
* Typical values from batch production. Batch-specific COA available on request.
Technical content reviewed by the CheMost additives team · Specifications last reviewed
Molecular Structure
Molecular structure · organomolybdenum complex
Sulfur- & phosphorus-free molybdenum-amine complex (Mo–N core, no S, no P) · CAS 445409-27-8
A sulfur- and phosphorus-free molybdenum-amine complex; it forms a low-friction molybdenum tribofilm at the contact and adds no ash beyond its molybdenum.
What Is an Organomolybdenum Complex (S/P-Free)?
CheMost-MO60N is a sulfur- and phosphorus-free organomolybdenum complex — an oil-soluble liquid friction modifier based on a molybdenum-amine structure, carrying 6.28% molybdenum and 1.83% nitrogen. It is the lowest-ash member of CheMost’s molybdenum friction-modifier family.
Under boundary and mixed lubrication it forms a durable, low-friction molybdenum tribofilm at the rubbing contact that reduces friction and wear between sliding surfaces, lowering energy loss and improving fuel economy. The molybdenum-amine structure also contributes useful antioxidant and antiwear performance.
Its defining feature is being free of both sulfur and phosphorus: it adds no ash beyond its molybdenum content, so it suits modern low-SAPS engine oils where the phosphorus of MoDTP — or even the sulfur of MoDTC — is unwanted. It can be used on its own or in synergy with sulfur-containing additives such as ZDDP, which further strengthen the molybdenum film.
How the Organomolybdenum Complex Works
Molybdenum tribofilm
At the contact the molybdenum-amine complex forms a low-friction molybdenum tribofilm that reduces the boundary/mixed-regime friction coefficient — the friction losses behind engine fuel consumption.
Sulfur- and phosphorus-free
Carrying no sulfur or phosphorus, it adds no ash beyond its molybdenum and imposes no phosphorus burden — ideal for low-SAPS, ash-sensitive formulations.
Synergy with ZDDP
Used with a sulfur-containing additive such as ZDDP, the available sulfur strengthens the molybdenum film, enhancing the friction-reducing and antiwear effect.
Antioxidant character
The molybdenum-amine structure also contributes antioxidancy, supporting oil life alongside its primary friction-reducing role.
Molybdenum Friction Modifiers Compared — Where the Complex Fits
CheMost offers three organomolybdenum friction modifiers that differ by chemistry and S/P content. The table places this S/P-free complex against the others so you can pick by SAPS target, molybdenum level and phosphorus budget. All figures are from each grade’s data sheet.
| Grade | Type | S / P | Molybdenum | Best for |
|---|---|---|---|---|
| Organomolybdenum Complex (this page) | Mo-amine complex | S-free · P-free | 6.28% | Low-SAPS, ash-sensitive engine oils |
| MoDTC | Dithiocarbamate | S yes · P-free | 10.0% | Premium fuel-economy FM, low-P |
| MoDTP | Dithiophosphate | S yes · P yes | 9.9% | Classic general-purpose engine-oil FM |
This complex is the choice when the oil must be lowest-ash and free of both sulfur and phosphorus. Where higher molybdenum loading is wanted and sulfur is acceptable, the P-free MoDTC or the classic MoDTP carry more molybdenum per unit treat.
Applications
CheMost-MO60N is used as the low-SAPS organomolybdenum friction modifier in formulations targeting the duties below:
Low-SAPS engine oils
Modern passenger-car and heavy-duty engine oils with tight sulfated-ash, phosphorus and sulfur limits, where friction reduction is needed without adding ash or phosphorus.
Fuel-economy formulations
Oils designed for fuel-economy targets, where the molybdenum tribofilm lowers boundary friction and the complex also supports oxidation control.
Greases & industrial oils
Greases and industrial lubricants needing an ash-light, phosphorus-free molybdenum friction modifier.
Finished-oil performance approvals (e.g. API, ACEA or ILSAC fuel-economy specifications) belong to the fully formulated oil, not to an individual friction-modifier component.
Treat Rate
The data sheet specifies the product but not a per-application dosage, so the figures below are indicative, derived from the chemistry and our formulating experience — confirm the final level.
First-order estimate. Organomolybdenum FMs are dosed to a molybdenum target, typically ~300–800 ppm Mo. For this 6.28%-Mo complex that is roughly 0.5–1.5% product — more product than a 10%-Mo MoDTC for the same molybdenum, but with no sulfur or phosphorus added.
The complex is often used with ZDDP (whose sulfur strengthens the molybdenum film) or with an organic friction modifier. The exact level depends on the molybdenum target, the SAPS limits, the base oil and the rest of the package.
Treat rates are indicative, not fixed dosages. CheMost can provide formulation and treat-rate support on request.
Formulating With the Complex — Complementary Additives
ZDDP
A sulfur source such as ZDDP strengthens the molybdenum tribofilm, so the S/P-free complex and ZDDP work in synergy for friction and wear — while keeping the complex’s own contribution ash-free.
MoDTC (higher-Mo option)
Where ash limits allow some sulfur, the higher-molybdenum MoDTC or MoDTP deliver more molybdenum per unit treat; the complex is the choice when sulfur and phosphorus must both be avoided.
Antioxidants
The complex adds antioxidancy of its own; pairing it with the main antioxidant system supports long-drain oxidation control in low-SAPS oils.
Detergents & dispersants
In a low-SAPS engine-oil package the complex works within the detergent-inhibitor system; the balance must preserve the molybdenum film while staying within ash limits.
Documentation, Qualification & Regulatory Support
Standard documentation — Certificate of Analysis (COA, per shipment), Technical Data Sheet (TDS) and Safety Data Sheet (SDS, GHS/CLP) — is provided. The full TDS is available on request rather than as a public download. Additional support is available on request:
Regulatory documentation
REACH, TSCA and country-specific market-registration documentation support available on request.
Third-party inspection
SGS / Intertek / BV pre-shipment inspection can be arranged on request.
Custom grades & packaging
Custom packaging and grades on request.
Formulation support
Friction-modifier and treat-rate guidance from our technical team.
Packaging & Supply
CheMost-MO60N is stocked and shipped worldwide, with a typical lead time of 1–15 days and a 36-month shelf life at ambient temperature. Samples and quotations are answered within 12 hours.
Packaging
200 kg metal drum · 1000 kg IBC tank.
Minimum order
1 drum / 1 IBC — contact us for your quantity.
Incoterms
FOB · CIF · EXW, to suit your freight arrangement.
Loading ports
All major Chinese ports.
Frequently Asked Questions
What is a sulfur- and phosphorus-free organomolybdenum complex?
It is an oil-soluble molybdenum-amine friction modifier (Mo 6.28%, N 1.83%) that forms a low-friction molybdenum tribofilm at the contact. Because it contains no sulfur or phosphorus, it adds no ash beyond its molybdenum — making it suited to modern low-SAPS engine oils.
Why choose the complex over MoDTC or MoDTP?
Choose it when the oil must be lowest-ash and free of both sulfur and phosphorus. MoDTC (P-free) and MoDTP (S+P) carry more molybdenum per unit treat, but both add sulfur; the complex is the S/P-free option for the tightest SAPS limits.
Does it work without ZDDP?
Yes — it forms its molybdenum tribofilm on its own. But a sulfur source such as ZDDP strengthens that film, so the complex and ZDDP are commonly used together for enhanced friction and wear control.
What treat rate should I use?
Dose to a molybdenum target — typically ~300–800 ppm Mo, which for this 6.28%-Mo complex is roughly 0.5–1.5% product (more product than a higher-Mo MoDTC for the same molybdenum, but with no sulfur or phosphorus added). The exact level depends on the SAPS limits and the rest of the package; our technical team can assist.
How is it supplied, and how fast can I get a sample?
It is supplied as a brownish-red/green liquid in 200 kg metal drums and 1000 kg IBC tanks with a 36-month shelf life, and shipped worldwide. As a manufacturer and sourcing partner (Est. 2013), CheMost answers sample and quotation requests within 12 hours.