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1 Introduction

1.1 Standard scope

This standard sets forth requirements and test methods relative to the mixture of xylenes. The mixture of xylenes is used mainly as a solvent in paint and varnish industry.

1.2 Normative references

MZRiP Method No 40Determination of xylene mixture composition by gas chromatography
PN-EN 22719Petroleum products and lubricants - Determination of flash point - Pensky-Martens closed cup method
PN-EN ISO 3170Petroleum liquids - Manual sampling
PN-EN ISO 3405Petroleum products - Determination of distillation characteristics at atmospheric pressure
PN-EN ISO 3675Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method
PN-EN ISO 12185Crude petroleum and petroleum products - Determination of density - Oscillating U-tube method
PN-85/C-45300.06Aromatic hydrocarbons - Test methods - Determination of sulphur content by Raney nickel method
PN-70/N-02120Principles of rounding and presentation of numbers

2 Marking


3 Requirements

3.1 General requirements

The mixture of xylenes should be transparent, colourless liquid, without mechanical impurities.

3.2 Detailed requirements

Detailed requirements according to table 1.

Table 1
PropertyLimitsTest method
a) Density at 15 °C, kg/m3860.0 - 870.0PN-EN ISO 3675
PN-EN ISO 12185
b) Distillation characteristics at atmospheric pressure:
- initial boiling point, °C, min.
- 95% recovered at temperature, °C, max.
PN-EN ISO 3405
c) Flash point, °C, min.28.0PN-EN 22719
d) Total sulphur content, mg/kg, max.1.0PN-85/C-45300.06
e) Aromatic hydrocarbons content, % (m/m), min.99.3MZRiP Method No 40
f) Non-aromatic hydrocarbons content, % (m/m), max.0.7MZRiP Method No 40

3.3 Sampling

Sampling and preparation of the average laboratory sample should be made according to PN-EN ISO 3170.

The average laboratory sample should be 2000 cm3. The average laboratory sample should be divided into two parts: one part should be used for testing, the other one should be kept for the purpose of arbitration analysis for the period of three months from the date of the batch shipment.

3.4 Batch quantity

A batch of goods is the contents of one xylene mixture tanker shipped to one address, with one accompanying certificate of quality.

3.5 Assessment of test results

A batch of xylene mixture should be considered as conforming to the standard if all the test results meet the standard values. In the event the results do not meeting the standard values, the test with a negative result (i.e. not meeting the standard value) should be repeated with one random sample. If the result is negative again, the batch should be rejected.

3.6 Interpretation of results

All specified limits in this standard and calculated results should be interpreted according to PN-70/N-02120.

3.7 Certificate of test results

For each batch of the goods the manufacturer shall prepare and send to the customer the certificate stating that the product meets the standard values.

4 Packing, storage and transport

4.1 Packing

Packing group: III

Packaging types: all design types in accordance with RID and ADR regulations with UN certification sign.

Retail containers labelling - label containing the product and manufacturer identifying details and the following symbols and captions:
  • hazard symbols:
  • harmful - Xn, irritating - Xi
  • warning captions:
  • R: 10-20/21-38
    S: 2-25.

    4.2 Storage

    Store only in certified, properly labelled, tightly closed containers, in the flammable fluid storage room equipped with explosion-proof ventilation and electrical installation. Prevent containers from being heated. At the storage area obey the prohibition of: smoking, using open flames and sparking hand tools.

    Xylene may be stored in storage tanks in accordance with the valid regulations.

    4.3 Transport

    The material is subject to regulations on the transport of dangerous goods.

    Material classification:

  • UN identification number: UN 1307
  • hazard identification number: 30
  • class/classification code: 3/F1
  • packing group: III

    Marking and labelling:

  • vehicles: reflectorised, orange-colour warning plates
  • wagons: hazard label No. 3
  • road tankers and railway tankers: orange-colour plates with No UN 30/1307 and hazard label No. 3.

    Information in transport document: XYLENES

    Chief Process EngineerDeputy Director for
    Refinery Production

    Established by the Deputy Director for Development and Production -
    Deputy Managing Director
    on 26.01.2004 as effective from 09.02.2004
    Service Order No 4/DP/2003

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