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Description: Lac is the resinous exudation of a specie of insect. When crushed, washed and dried it is known as seedlac. Shellac is the name given to the article of commerce when manufactured into flakes. It is used in the manufacture of sealing wax, gramophone records, varnishes, etc. This commodity is very liable to solidify or block under changing climatic conditions or due to moisture, heat or pressure. This blocking is encouraged when low grades are mixed with the better qualities. Shellac of old crop will block more readily than that of new crop. Shellac is usually shipped in a free or flaky form, but in some trades it is actually shipped in blocks. In the event of complaint of blocking, evidence should be obtained to show whether or not shellac was shipped in a solidified condition, or has become solidified due to storage under the conditions mentioned above. Blocked lac is often erroneously considered to be damaged, but while it may not be as attractive in appearance as free or flaky lac, blocking does not necessarily, seriously damage or change the essential qualities of the lac. Normally lac is ground before use, whether it be in free or blocked state. There would be additional charges for grinding block lac than for free goods. Therefore, when lac reaches destination in a blocky state, the buyer incurs a loss to the extent of these higher charges. When making an assessment for loss, it should be remembered that blocking of lac is not unnatural, and that this fact is well-known and appreciated through out the world. Lac is liable to damage by contact with water. This type of damage may be caused by lac remaining in water or by it being stored in damp and enclosed spaces. The extent of loss will depend upon the duration of these conditions. Water damaged lac is discolored, brittle, and can be crumbled without difficulty. This damage may be noticeable on the outer part of packages and its extent may be judged either by weighing the lac if it is in free condition and therefore separable. When the lac is found in blocky condition and can be inseparated by breaking the contents of a package and measuring the comparative good and damaged parts. The extent of loss by water damage is not easily determinable, because a great deal depends upon the quality of the lac and the use to which it is put. High grades of lac, when water damaged, may become totally unfit for the type of work intended. It is, therefore, suggested that, where practicable, the assistance of trade experts be sought in assessing water damaged lac. See also IMDG Code & US CFR.
Index: 654
Commodity Name: SHELLAC (Seedlac, Lac, etc.)

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