| Top page | Company Profile | Our products | Contact | Q&A | Information | JAPANESE/ ENGLISH |
| Desiccant | Oxygen Absorbent | Fresh Retainer | Package Material | Porous Material | HumidityIndicatorCard |
 |
Head office：2-2-15 Houshin,Higashiyodogawa,Osaka,Japan Tel:+81-6-6329-6651 Fax:+81-6-6321-2252 |
Characteristics
RAYM®is a desiccant that contains calcium oxide as the main component and chemically adsorbs moisture. The chemical formula is expressed as follows:
CaO＋H2O→Ca(OH)2
RAYM® is capable of adsorbing moisture up to 30% its own weight independently of the ambient humidity. This property makes RAYM® effective and economical for storage at a low relative humidity when compared with physical adsorption-type desiccants, whose adsorption is proportional to the ambient humidity.
| Component | Proportion(wt%) |
| CaO | 95.4 |
| MgO | 1.2 |
| Al2O3 | 0.1 |
| SiO2 | 0.5以下 |
| Fe2O3 | 0.1以下 |
| Ig-Loss | 3.3 |
NSKK Standard
The Nippon Sekkai Kansozai Kyogikai (NSKK) (Japan Lime Desiccant Council) provides a strength standard for packaging materials to prevent bursting and damage by children. RAYM® conforms to this standard and is also designed to develop stable moisture-absorbing capability by preventing rapid reaction resulting from penetration of water into the packets.
| ITEM | Standard value | |
| Tensile strength(JIS P-8113) | Longitudinal(kN/m) | 2.62 |
| Elongation(%) | 2.5 | |
| Transverse(kN/m) | 1.96 | |
| Elongation(%) | 2.5 | |
| Burst strength(JIS P-8112) | kPa | 250 |
| Bonding strength(JIS Z-0238) | N/15mm | 6 |
Specification
| Type | Weight（ｇ） | Quantity（packets） | Standard size（mm） |
| PS | 3 | 3000 | 60×40 |
| P1 | 5 | 1800 | 65×50 |
| P2 | 10 | 1000 | 75×60 |
| P3 | 15 | 750 | 80×70 |
| P4 | 20 | 600 | 95×70 |
| P5 | 30 | 450 | 120×70 |
| P6 | 45 | 300 | 120×85 |
| P7 | 60 | 230 | 120×95 |
| P8 | 80 | 180 | 130×130 |
| P9 | 100 | 150 | 140×130 |
| P10 | 120 | 120 | 150×130 |
| CR30 | 30 | 315 | φ75×24h |
| CR38 | 38 | 200 | φ85×27h |
Cautions
RAYM® expands as it absorbs moisture. Insufficient room for expansion in your product packages could cause bursting of RAYM® packets. Avoid loads on the packets and bending and rolling of the packets. Do not damage RAYM® or dispose of it in water. Direct contact of RAYM® contents with water rapidly generates heat.