Silica Coated Lemon Yellow
Silica Coated Lemon Yellow
Product Parameters
| Model | 5001S |
|---|---|
| Main Content (PbCrO4) | ≥ 40% |
| Hue | Lemon Yellow Hue |
| Water Solubles | ≤ 1.0% |
| Residue (45μm) | ≤ 1.0% |
| pH Value | 5-8 |
| Light Fastness | 3-4 |
| Heat(Coatings) | ≤240℃ |
| Heat(Plastics) 5min | ≤300℃ |
| Color Difference ΔE | ≤ 1.0 |
| Packaging | 25kg valve bag / ton bag |
Product Details
Silica-coated Lemon Yellow PY 34 is a high-performance upgraded inorganic pigment modified with dense amorphous silica encapsulation. Compared with ordinary uncoated lemon yellow, it forms an inert physical barrier on pigment surfaces to effectively block ultraviolet rays, moisture and corrosive substances. Its light fastness is upgraded from Grade 2–3 to Grade 4, and outdoor weather resistance is significantly improved, effectively solving common defects of ordinary PY34 such as easy fading and aging. This product retains original high tinting strength and pure bright hue, with better chemical and thermal stability. It is widely used for outdoor coatings, plastics, delivering long-term stable color durability.
SDS
Document Version: 1.0
Issue Date: 2026-02-22
Revision Date: None
Product Name: Silica-Coated Lemon Yellow
Common Name: Coated Chrome Yellow, PY34
Applicable Standard: UN GHS Revision 7, EU Regulation 2020/878, ISO 11014
1. PRODUCT AND COMPANY IDENTIFICATION
Product Identifier: Silica-Coated Lemon Yellow (Pigment Yellow 34)
CAS No.: 1344-37-2 (Lead Chrome); 7631-86-9 (Silica Coating)
Recommended Use: Colorant for coatings, plastics, printing inks and industrial paints
Supplier Information:
Company: Guangzhou Cailian Pigment CO,.LTD.
Contact Person: Mr Li
Contact Phone: +8618507392221
Address: Room 2111 No.101 Kexue Road, Guangzhou China
Email: clpigment@gmail.com
2. HAZARDS IDENTIFICATION
GHS Classification:
-
Carcinogenicity (Category 1A)
-
Specific Target Organ Toxicity (Repeated Exposure) (Category 1)
Signal Word: DANGER
Hazard Statements:
H350: May cause cancer by inhalation.
H372: Causes damage to organs through prolonged or repeated exposure.
Precautionary Statements:
P201+P202: Obtain special safety instructions before use. Do not handle until all safety precautions have been read and understood.
P280: Wear protective gloves, protective clothing, eye protection and face protection.
P264: Wash exposed skin thoroughly with soap and water after handling.
P501: Dispose of contents/container to approved hazardous waste disposal site in accordance with local, regional and national regulations.
3. COMPOSITION / INFORMATION ON INGREDIENTS
|
Ingredient
|
CAS Number
|
Content
|
|---|---|---|
|
Lead Chromate
|
1344-37-2
|
75–92%
|
|
Amorphous Silica (Coating)
|
7631-86-9
|
3–10%
|
|
Other lead salt additives
|
–
|
Balance
|
Important Note: The amorphous silica coating only serves as a physical barrier to improve light resistance, weather resistance and chemical resistance of the pigment. It does not change the chemical composition or eliminate the inherent carcinogenic and toxic properties of lead chromate (hexavalent chromium) components.
4. FIRST AID MEASURES
Inhalation: Remove person to fresh air at once. Keep breathing unobstructed. If cough, dyspnea or other discomforts occur, seek immediate medical attention.
Skin Contact: Immediately remove all contaminated clothing and footwear. Rinse affected skin with plenty of running clean water continuously for several minutes. Consult a doctor if skin irritation occurs.
Eye Contact: Flush eyes with plenty of clean water for at least 15 minutes. Seek medical attention.
Ingestion: Do not induce vomiting. Rinse mouth thoroughly with water. Never give anything by mouth to an unconscious person. Seek urgent medical treatment.
5. FIRE FIGHTING MEASURES
Flammability: Non-flammable inorganic pigment.
Suitable Extinguishing Media: Water spray, dry powder, foam, CO₂.
Hazardous Decomposition Products: Thermal decomposition or combustion will produce toxic and harmful fumes including chromium trioxide, lead oxide and heavy metal particulate matter.
Firefighter Protection: Wear self-contained breathing apparatus and full protective fire clothing.
6. ACCIDENTAL RELEASE MEASURES
Personal Precautions: Prevent dust generation and aerosol formation. Wear certified dust respiratory protection, chemical safety goggles and acid-base resistant protective gloves. Keep irrelevant personnel away from the spill area.
Spill Handling: Gently collect spilled powder with dust-free method, place into sealed and labeled hazardous material containers. Avoid sweeping violently to prevent secondary dust pollution.
Environmental Precautions: Strictly prevent the product from entering surface water, groundwater, soil and sewer systems. Report environmental leakage to local environmental department in time.
7. HANDLING AND STORAGE
Handling: Operate in a well-ventilated workplace with local exhaust ventilation system installed. Strictly avoid dust inhalation and skin/eye contact. Prohibit eating, drinking and smoking during operation. Conduct post-operation cleaning strictly.
Storage: Store in dry, cool, ventilated and dust-proof warehouse. Keep containers tightly sealed. Isolate from strong acids, strong alkalis, reducing agents and combustible materials. Keep away from food, feed and daily necessities.
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
Engineering Controls: Local exhaust ventilation to control dust concentration.
Respiratory Protection: Wear N95 or above dust-proof respirator in normal dusty environment; wear positive pressure breathing apparatus in severe dust environment.
Eye Protection: Chemical safety goggles.
Hand Protection: Chemical resistant gloves.
Body Protection: Wear dedicated dust-proof and chemical-resistant work clothes to avoid long-term skin contact with powder.
9. PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Solid Powder
Appearance: Uniform bright yellow inorganic powder
pH (aqueous suspension): 6.0–8.0
Solubility: Insoluble in water, ethanol and common organic solvents
Density: 5.8–6.4 g/cm³
Thermal Stability: Excellent thermal stability; stable below 500°C, no obvious color fading or decomposition
Particle Appearance: Uniform fine powder, no obvious agglomeration
Odor: Odorless
Melting Point: Decomposes above 500°C (no fixed melting point)
Vapor Pressure: Negligible at 25°C
Volatility: Non-volatile
Flammability Limit: Not applicable (non-flammable)
10. STABILITY AND REACTIVITY
Stability: Stable under normal handling, transportation and storage conditions. The silica protective layer maintains stable barrier performance in conventional industrial application environments.
Incompatible Materials: Strong reducing agents, concentrated strong acids, sulfide compounds, alkaline substances
Hazardous Decomposition: High-temperature decomposition will produce toxic heavy metal oxide fumes, which are harmful to human respiratory system and environment
11. TOXICOLOGICAL INFORMATION
This product contains hexavalent chromium and lead heavy metal compounds with biological cumulative toxicity. Long-term or repeated inhalation, skin contact or accidental ingestion will cause cumulative damage to human liver, kidney, respiratory system and other organs, and has definite human carcinogenic risk. Silica coating only optimizes the product’s weather resistance, chemical resistance and application performance, and does not reduce the inherent toxic, carcinogenic and hazardous properties of lead chromate components.
12. ECOLOGICAL INFORMATION
The product is highly toxic to aquatic organisms and may cause long-term persistent adverse impacts on aquatic ecological environment. Heavy metal components will accumulate in organisms. It is strictly prohibited to discharge untreated product waste into water bodies, soil and surrounding environment.
13. DISPOSAL CONSIDERATIONS
Waste materials and contaminated containers must be treated as hazardous waste. Hand over to qualified professional hazardous waste disposal institutions for centralized treatment in accordance with local national, regional environmental protection laws and regulations. Illegal dumping and discharge are prohibited.
14. TRANSPORT INFORMATION
UN Number: 3077
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (Lead Chromate)
Transport Hazard Class: 9
Packing Group: III
Transport Notes: Comply with IMDG (sea), IATA (air) and ADR/RID (road/rail) dangerous goods regulations. Avoid violent vibration, extrusion, rain soaking, high temperature exposure and mixed transportation with incompatible substances (strong acid, reducing agent, sulfide). Transport vehicles must be equipped with fire extinguishing devices and leakage emergency treatment tools. Packages shall be intact, sealed and clearly labeled with hazard marks.
15. REGULATORY INFORMATION
Compliant with UN GHS Revision 7, EU REACH Regulation, CLP Regulation (EC 1272/2008) and ISO 11014 standards. Restricted hazardous substance due to hexavalent chromium and lead content. Limited to professional industrial use only, strictly prohibited for food contact materials, daily consumer goods, toy materials and medical scenarios.
16. OTHER INFORMATION
This SDS is compiled in accordance with UN GHS Rev.7, EU 2020/878 and ISO 11014 based on the latest industry authoritative data and practical product properties. It is applicable to enterprise safety production guidance, overseas customer audit, export document review and daily chemical safety management. All safety statements are professional operation guidelines and not for non-industrial use. This document is an internal technical reference; official third-party certified SDS shall be adopted for customs declaration, legal filing and product certification. All operations must comply with local national and regional environmental safety laws and regulations.
Applications
Ink
