DESCRIPTION
Gum Rosin, also called colophony or Greek pitch, is a solid form of resin obtained from pines and some other plants, mostly conifers, produced by heating fresh liquid resin to vaporize the volatile liquid terpenecomponents. It is semi-transparent and varies in color from yellow to black. At room temperature rosin is brittle, but it melts at stove-top temperatures. It chiefly consists of different resin acids, especially abietic acid.
Grade |
X |
WW |
WG |
N |
M |
K |
Appearance |
Transparent Solid |
Color |
slightly yellow |
pale yellow |
yellow |
deep yellow |
yellow brown |
yellow red |
Correspond to the Standard Glass Color Piece of Rosin |
Softening Point (R&B),°C, min |
76 |
75 |
74 |
Acid Value, (mgKOH/g), min |
166 |
165 |
164 |
Alcohol insoluble Substance ,(%) , max |
0.03 |
0.03 |
0.04 |
Unsaponifiable matter, (%) ,max |
5 |
5 |
6 |
Ash, (%) ,max |
0.02 |
0.03 |
0.04 |
FAQ
Q1: How to start orders or make payments?
A:You can send our your Purchase order(if your company has), or just send a simple confirmation by email or by Trade Manager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q2: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q3: What's your MOQ?
A:For the high value product, our MOQ starts from 1g and generally starts from 10gs. For other low price product, our MOQ starts from 100g and 1kg.
Q4:Is there a discount?
A: Yes, for larger quantity, we always support with better price.
Q5:How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero.