water-soluble type wood preservatives, Part 1: Acid-copper-chrome (ACC) preservative
1981 Edition

Overview - Scope of ACC Preservative Specification

• Defines the criteria for Acid-Copper-Chrome (ACC) preservative, a water-soluble, fixed-type wood treatment chemical.
• Intended to improve durability of less naturally durable timber species through chemical treatment.
• Consistent with IS 401-1981 guidelines on timber preservation practices.
• Focuses on ensuring preservative quality for optimal absorption and penetration.
• Promotes economical usage of timber resources.

Fundamental Composition

Measurement Units (SI System)

Important Notes

• ISI Certification Mark usage governed by ISI regulations.
• Test results rounded following IS 2-1960.
• Standard covers both preservative formulation and quality control procedures for timber treatment.

flowchart TD
    Timber --> Treatment[Preservative Treatment]
    Treatment --> ACC[Acid-Copper-Chrome Preservative]
    ACC --> Durability[Enhanced Durability]
    Durability --> Longevity[Extended Service Life]

Summary: The standard defines chemical makeup and quality parameters of ACC preservative to secure improved timber longevity through standardized application.

IS 10013 Part 1 - Composition and Attributes of ACC Preservative

1. Composition (Nominal Weight Percentages)

2. Specifications

• Each ingredient's minimum quantity must meet or exceed the stated percentages.
• Sampling and testing methods follow TS: 2753 (Part I) - 1964.
• Analytical procedures for copper, chromium, arsenic, and other elements are specified in the standard.

3. Additional Information

• ACC preservative is a widely accepted acid-copper-chrome wood treatment formulation.
• Accurate chemical analysis is critical to ensure effective protection and compliance.

flowchart LR
    ChromicAcetate[Chromic acetate/Boric acid (5%)] --> Mix[Preservative Blend]
    CopperSulphate[Copper sulphate (50%)] --> Mix
    Dichromate[Sodium/Potassium dichromate (45%)] --> Mix
    Mix --> ACCPreservative[Acid-Copper-Chrome Preservative]

This formulation offers strong fungicidal and insecticidal protection in line with IS 10013 Part 1 requirements.

Key Sampling Procedures under IS 10013 Part 1

1. Sampling Protocol (Clause 3.1):

   • Draw samples randomly from a sufficient number of containers within a single batch.
   • Follow random sampling techniques as prescribed in IS 4905-1968.

2. Chemical Testing (Clause 4.1):

   • Analyze the samples as per IS 2753 (Part 1)-1964 standards.
   • Verify that chemical proportions meet Clauses 2.1 and 2.1.1 criteria of IS 10013.

3. Marking Instructions (Clause 5.1.1):

   • Containers may display the ISI Certification Mark to indicate adherence to quality standards.

Summary Table for Sampling

Important Considerations

• Sampling ensures representative evaluation of preservative quality.
• Standardized chemical estimation guarantees accuracy.
• ISI Mark represents product conformity and quality assurance.

flowchart TD
    Batch[Supply Batch] --> RandomSample[Random Sampling (IS 4905)]
    RandomSample --> SampleCollection[Sample Collection]
    SampleCollection --> ChemicalAnalysis[Chemical Testing (IS 2753)]
    ChemicalAnalysis --> ComplianceCheck{Meets Standard?}
    ComplianceCheck -->|Yes| ISIMark[Apply ISI Certification]
    ComplianceCheck -->|No| Reject[Reject or Retreatment]

This process maintains consistency and quality in the preservative as per IS 10013 Part 1.

IS 10013 Part 1 - Chemical Analysis Requirements for ACC Preservative

Composition Requirements (Clauses 2.1 and 2.1.1)

• The preservative must have no less than the specified percentages.
• Sodium or potassium dichromate may be used interchangeably.

Testing Methodology (Clause 4.1)

• Follow IS 2753 (Part 1) - 1964, Clause 3.4 for estimation of elements.
• Analysis includes copper, arsenic, chromium, zinc, boron, creosote, and fuel oil.
• Sampling must comply with IS 10013 Part 1 provisions.

Chemical Analysis Workflow

flowchart TD
    Start[Sample Collection] --> Preparation[Sample Preparation (IS 2753)]
    Preparation --> CopperTest[Copper Content Estimation]
    Preparation --> ChromiumTest[Chromium Content Estimation]
    Preparation --> OtherElements[Estimation of As, Zn, B]
    Preparation --> Additional[Creosote & Fuel Oil Analysis]
    CopperTest & ChromiumTest & OtherElements & Additional --> Evaluation[Compare to Minimum Standards]
    Evaluation --> ComplianceCheck{Compliant?}
    ComplianceCheck -->|Yes| Accept[Approve Batch]
    ComplianceCheck -->|No| Reject[Reject or Reprocess]

Note: Report numerical results rounded according to IS 10013 rounding rules.

Marking Instructions as per IS 10013 Part 1 (Clause 5.1)

Containers must be clearly labeled with:

• Manufacturer's name or trademark
• Date of production
• Percentage of dry active ingredients

Additional Marking Details (Clause 5.1.1)

• Containers may also display the ISI Certification Mark.
• The ISI mark certifies compliance with the Indian Standard, supported by testing and quality audits.
• Use of the ISI mark is regulated under the Indian Standards Institution Certification Marks Act.

Labeling Summary Table

Important Considerations

• Active ingredient percentages must meet or exceed the minimum specified in Clause 2.1.1.
• Labeling must be legible and durable to ensure traceability and quality assurance.

For further information on minimum preservative percentages or rounding procedures, please request details.