PRODUCTS

CLAYTONE 7840

Claytone 7840 is used to control viscosity, ensure stable suspension of fillers or solid lubricants (e.g. graphite, PTFE), prevent sedimentation, improve consistency.
Claytone 7840 is used oil-based formulations needing thixotropic behavior — e.g. heavy‑duty oils, naphthenic / mineral oil‑based systems where stability and controlled flow under shear are important.

CAS Number: Not applicable
EC / EINECS Number: Not applicable
Chemical Name / Formula: Not applicable (mixture / organophilic clay)
Molecular Formula: Not applicable
Molecular Weight: Not applicable

SYNONYMS:
organophilic phyllosilicate, organophilic clay, organoclay rheology additive, rheology modifier additive, lubricant rheology thickener, thixotropic clay additive, oil-thickening organoclay, self-activating phyllosilicate additive

Claytone 7840 is a specialty organoclay additive that enhances the rheology, stability, and handling properties of oil-based products.
Claytone 7840 offers a combination of ease of use, long-term stability, and predictable thixotropic performance, making it a standard choice for formulations requiring controlled flow behavior and improved filler suspension.

Claytone 7840 is a rheology additive manufactured by BYK.
It’s based on a self‑activating, organophilic phyllosilicate (modified clay).
Claytone 7840 is designed to impart thixotropic flow behavior (i.e. shear‑thinning / reversible gel structure) specifically in low- to medium‑polar base oils for lubricant (and similar) applications.

Claytone 7840 belongs to the “Rheology Additives” product group.
Shelf life (unopened) of Claytone 7840 is listed as 60 months under appropriate storage conditions.
Claytone 7840 is rheology additive based on a self-activating, organophilic phyllosilicate to provide thixotropic flow behavior, especially for low- to medium-polar base oils in lubricant applications.

Claytone 7840 is a high-performance organophilic phyllosilicate additive manufactured by BYK, designed primarily as a rheology modifier for low- to medium-polar oils.
Claytone 7840 is a solid powder with a yellowish appearance and a characteristic odor.

As a processed clay mixture, Claytone 7840 is self-activating, meaning it disperses in the intended oil medium without the need for additional chemical activators, forming a gel-like network that flows under shear but remains structured at rest.
This property of Claytone 7840 helps prevent the settling of fillers, pigments, or solid lubricants, ensuring long-term stability of the formulation.

Because Claytone 7840 is a proprietary mixture rather than a pure chemical substance, it does not have a CAS number, EC/EINECS number, molecular formula, or molecular weight.

Its solubility is limited in water but Claytone 7840 readily disperses in compatible oils.
Claytone 7840 is non-flammable, has low dust hazard, and is stable under normal storage conditions, with a shelf life of up to 60 months when stored in sealed packaging below 35 °C.

USES and APPLICATIONS of CLAYTONE 7840:
Lubricants & greases — Claytone 7840 is used to control viscosity, ensure stable suspension of fillers or solid lubricants (e.g. graphite, PTFE), prevent sedimentation, improve consistency.
Claytone 7840 is used oil-based formulations needing thixotropic behavior — e.g. heavy‑duty oils, naphthenic / mineral oil‑based systems where stability and controlled flow under shear are important.

Because Claytone 7840 is optimized for low-to-medium polarity base oils, it’s usually not intended for highly polar or aqueous systems unless additional formulation adjustments are made.
Uses / Applications of Claytone 7840: Lubricants and greases (viscosity control, filler suspension), Oil-based thixotropic formulations, Industrial and automotive lubricant additives.

Claytone 7840 is rheology additive based on a self-activating, organophilic phyllosilicate to provide thixotropic flow behavior, especially for low- to medium-polar base oils in lubricant applications.
Claytone 7840’s functional benefits include imparting thixotropic behavior, improving suspension stability, and enhancing viscosity control in oil-based systems.

Claytone 7840 is particularly valuable in industrial lubricants, automotive oils, and greases, where maintaining uniformity of additives and fillers is critical.
Claytone 7840 is not intended for aqueous or highly polar systems without additional formulation adjustments.

Claytone 7840's performance is influenced by the polarity and viscosity of the base oil, and optimal dispersion is achieved through mechanical mixing under controlled conditions.
Claytone 7840 is widely used in lubricants, greases, and oil-based formulations where control of viscosity, suspension stability, and thixotropic behavior is required.

✅ BENEFITS / CHARACTERISTICS of CLAYTONE 7840:
Claytone 7840 provides thixotropic flow behavior: under shear (mixing, pumping) the mixture flows, while at rest it forms a gel‑like network — useful for stability, suspension, sag‑resistance, and controlled viscosity.
Claytone 7840 helps prevent sedimentation or settling of fillers, pigments or solid lubricants in oil‑based systems, improving long‑term stability.

Because Claytone 7840’s self‑activating, no additional chemical activator is needed (for intended oil systems), simplifying formulation.
Long shelf life (60 months unopened) under correct storage → Claytone 7840 is stable supply and predictable performance.
Claytone 7840 imparts thixotropic flow: gel-like at rest, flows under shear

Claytone 7840 prevents sedimentation of fillers or pigments
Self-activating, no additional chemical activators needed

KEY BENEFITS of CLAYTONE 7840:
*Rheology additives
*Suited For a wide polarity range and many applications
*Provide thixotropic flow
*Shear-thinning For Easy application
*Good leveling
*Improvement of sag resistance and Anti-settling / storage stability
*Self-activating grades need no polar activator

FAMILY of CLAYTONE 7840:
Claytone rheology additives from BYK are organically modified, natural phyllosilicates for universal usage in solvent-borne and in solvent-free systems.
They provide a thixtropic flow behavior and significantly improve the anti-settling properties, the storage stability, and the sag resistance.
Claytone additives are mainly effective in the low and mid shear range.

There are different types available to match the polarity of systems to which they are added.
Claytone rheology additives can be used in all solvent-borne and solvent-free coatings, construction formulations, adhesives and sealants, printing inks, thermosets, lubricants, and household, institutional, and industrial cleaners.

PHYSICAL and CHEMICAL PROPERTIES of CLAYTONE 7840:
Form / Physical state: Powder (solid additive)
Function / Behavior: Self‑activating organophilic phyllosilicate — imparts thixotropic rheology (gel / shear‑thinning) when mixed into non‑ to medium‑polar oils.
Intended solvent / medium type: Low- to medium‑polar base oils — typically lubricant base oils, mineral oils, naphthenics, vegetable oils, etc.
Effect in formulation: Provides controlled viscosity, prevents sedimentation / settling of fillers or additives, stabilizes the suspension, and creates a gel-like network in the oil.
Storage / Shelf‑life: Shelf life is 60 months (if stored in unopened original packaging under specified conditions) per manufacturer.
Trade Name: CLAYTONE 7840

Chemical Name / Formula: Not applicable (mixture / organophilic clay)
Molecular Weight: Not applicable
CAS Number: Not applicable
EC / EINECS Number: Not applicable
PubChem Record: Not applicable
ChemSpider Record: Not applicable

Chemical Synonyms: organophilic phyllosilicate, organophilic clay, organoclay rheology additive, rheology modifier additive, lubricant rheology thickener, thixotropic clay additive, oil-thickening organoclay, self-activating phyllosilicate additive
Physical State: Solid (powder / flakes)
Appearance / Color: Yellowish powder
Odor: Characteristic
Melting / Softening Point: Not defined (functionally ~63 °C in SDS for similar organoclays)
Solubility: Insoluble as powder; dispersible in low- to medium-polar oils

Flash Point / Flammability: Non-flammable
pH: Not defined (depends on oil formulation)
Function / Behavior: Self-activating organophilic phyllosilicate; imparts thixotropic / shear-thinning behavior; stabilizes suspensions in oils
Intended Medium: Low- to medium-polar base oils (mineral oils, naphthenics, vegetable oils)
Physical State: Solid (powder / flakes)
Appearance / Color: Yellowish powder
Odor: Characteristic
Melting / Softening Point: Not defined (functionally ~63 °C for similar organoclays)

Solubility: Insoluble as powder; dispersible in low- to medium-polar oils
Flash Point / Flammability: Non-flammable
pH: Not defined (depends on formulation)
Function / Behavior: Self-activating organophilic phyllosilicate; imparts thixotropic / shear-thinning behavior; stabilizes suspensions in oils
Intended Medium: Low- to medium-polar base oils (mineral oils, naphthenics, vegetable oils)
Rheology Effect: Forms gel-like network at rest; flows under shear; prevents sedimentation of fillers/pigments
Storage Stability: Stable under normal storage conditions; shelf life 60 months (unopened)

FIRST AID MEASURES of CLAYTONE 7840:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of CLAYTONE 7840:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of CLAYTONE 7840:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of CLAYTONE 7840:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of CLAYTONE 7840:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of CLAYTONE 7840:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available