MSDS中CAS缩写是什么意思
MSDS (Material Safety Data Sheet)即化学品安全说明书，亦可译为化学品安全技术说明书或化学品安全数据说明书。是化学品生产商和进口商用来阐明化学品的理化特性（如PH值，闪点，易燃度，反应活性等）以及对使用者的健康（如致癌，致畸等）可能产生的危害的一份文件。在欧洲国家，MSDS也被称为安全技术/数据说明书 SDS(Safety Data sheet)。 国际标准化组织 （ISO）11014采用SDS术语，然而美国、加拿大，澳洲以及亚洲许多国家则采用MSDS术语。
MSDS是化学品生产或销售企业按法律要求向客户提供的有关化学品特征的一份综合性法律文件。它提供化学品的理化参数、燃爆性能、对健康的危害、安全使用贮存、泄漏处置、急救措施以及有关的法律法规等十六项内容。MSDS可由生产厂家按照相关规则自行编写。但为了保证报告的准确规范性.
CAS(Chemical Abstracts Service)
美国化学文摘服务社--为化学物质制订的登记号
化工方面：
CAS Registry Number或称CAS Number 又称CAS登录号
是美国化学文摘服务社(Chemical Abstracts Service ,CAS)为化学物质制订的登记号，该号是检索有多个名称的化学物质信息的重要工具。是某种物质（化合物、高分子材料、生物序列（Biological sequences）、混合物或合金的8唯一的数字识别号码。
美国化学会的下设组织CAS负责为每一种出现在文献中的物质分配一个CAS号，其目的是为了避免化学物质有多种名称的麻烦，使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS号检索。到2005年12月25日，CAS已经登记了27,115,156种物质最新数据 ，并且还以每天4,000余种的速度增加。
格式 :一个CAS号以连字符“-”分为三部分，第一部分有2到6位数字，第二部分有2 位数字，第三部分有1位数字作为校验码。CAS号以升序排列且没有任何内在含义。校验码的计算方法如下：CAS顺序号（第一、二部分数字）的最后一位乘以1，最后第二位乘以2，依此类推，然后再把所有的乘积相加，再把和除以10，其余数就是第三部分的校验码。举例来说，水（H2O）的CAS号前两部分是7732-18，则其校验码＝（8×1＋1×2＋2×3＋3×4＋7×5＋7×6）mod 10＝105 mod 10＝5。（mod是求余运算符）
异构体、酶和混合物: 不同的同分异构体分子有不同的CAS号，比如右旋葡萄糖（D-glucos）的CAS号是50-99-7，左旋葡萄糖（L-glucose）是921-60-8，α右旋葡萄糖（α-D-glucose）是26655-34-5。 偶然也有一类分子用一个CAS号，比如一组乙醇脱氢酶（Alcohol dehydrogenase）的CAS号都是9031-72-5。混合物如芥末油（mustard oil）的CAS号是8007-40-7。
碳粉MSDS认证仅需500元，认证周期1-3天！
MSDS,是化学品安全说明书（Material Safety Data Sheet）的简称，也有翻译为物质安全数据单、化学品安全技术说明书、化学品安全数据说明书等。它是化学品生产或销售企业按法律要求向客户提供的有关化学品特征的一份综合性法律文件。
MSDS主要内容：
一：化学品名称和制造商信息
二：化学组成信息
三：危害信息
四：急救措施
五：消防措施
六：泄露应急处理
七：操作和储存
八：接触控制和个人防护措施
九：理化特性
十：稳定性和反应活性
十一：毒理学信息
十二：生态学信息
十三：废弃处置
十四：运输信息
十五：法规信息
十六：其他信息
MSDS的申请需要的文件
申请人或公司名称、地址、联系人、电话、传真、邮箱、产品名称、产品型号、产品性质、较终用途、出口国、产品包含的化学成分名称及成分百分比(CAS NO.)、产品物理性质等。
MSDS报告的作用
MSDS简要说明了一种化学品对人类健康和环境的危害性并提供如何安全搬运、贮存和使用该化学品的信息。生产企业需要向用户提供安全说明书，使用户明了化学品的有关危害，使用时能主动进行防护，起到减少职业危害和预防化学事故的作用。目前美国、日本、欧盟等发达国家已经普遍建立并实行了MSDS制度，要求危险化学品的生产厂家在销售、运输或出口其产品时，同时提供一份该产品的安全说明书。
化学品安全技术说明书（MSDS）
Material Safety Data Sheet
右面有个“MSDS免费查询 （3000余条）”，选择查询CAS，输入你想查询的物品，试试吧
EN
**** MATERIAL SAFETY DATA SHEET ****
2,4-Dihydroxy-6-methylpyrimidine, 97%
**** SECTION 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION ****
MSDS Name: 2,4-Dihydroxy-6-methylpyrimidine, 97%
Catalog Numbers:
11498-0000, 11498-0050, 11498-1000
Synonyms:
6-Methyluracil
Company Identification (Europe): Acros Organics BVBA
Janssen Pharmaceuticalaan 3a
2440 Geel, Belgium
Company Identification (USA): Acros Organics
One Reagent Lane
Fairlawn, NJ 07410
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+-----------+---------------+
| CAS# | Chemical Name |% | EINECS# |Haz Symbols| Risk Phrases |
|----------------|--------------------------------------|----------|-----------|-----------|---------------+
| 626-48-2 |2,4-Dihydroxy-6-methylpyrimidine | 97%| 210-949-4
+----------------+--------------------------------------+----------+-----------+-----------+---------------+
Hazard Symbols: XN
Risk Phrases: None Listed.
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Possible risk of impaired fertility. Possible risk of harm to the
unborn child.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May be harmful if absorbed through the
skin.
Ingestion:
May cause irritation of the digestive tract. May be harmful if
swallowed.
Inhalation:
May cause respiratory tract irritation. May be harmful if inhaled.
Chronic:
Not available.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid.
Notes to Physician:
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin
and eyes.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment
Eyes:
Wear chemical goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Always use
a NIOSH or European Standard EN 149 approved
respirator when necessary.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Crystalline powder
Color: white to almost white
Odor: Not available.
pH: 13 (7g/l aq. sol.)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 318 deg C(dec.)
Autoignition Temperature: Not available.
Flash Point:Not available.
Explosion Limits, lower:Not available.
Explosion Limits, upper:Not available.
Decomposition Temperature: >300 deg C
Solubility in water:7 g/l water (22°C)
Specific Gravity/Density:
Molecular Formula: C5H6N2O2
Molecular Weight: 126.11
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Not available.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 626-48-2: YR0700000
LD50/LC50:
CAS# 626-48-2: Oral, mouse: LD50 = >7500 mg/kgOral, rat: LD50 =
64500 mg/kg.
Carcinogenicity:
2,4-Dihydroxy-6-methylpyrimidine -
Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Dispose of in a manner consistent with federal, state, and local regulations.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
No information available.
IMO
No information available.
RID/ADR
No information available.
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 62 Possible risk of impaired fertility.
R 63 Possible risk of harm to the unborn child.
Safety Phrases:
S 36/37 Wear suitable protective clothing and
gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 626-48-2: 1
United Kingdom Occupational Exposure Limits
United Kingdom Maximum Exposure Limits
Canada
CAS# 626-48-2 is listed on Canada's NDSL List.
CAS# 626-48-2 is not listed on Canada's Ingredient Disclosure List.
Exposure Limits
US FEDERAL
TSCA
CAS# 626-48-2 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 7/16/1996 Revision #1 Date: 8/05/2002
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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1）产品名称、使用建议和使用限制；
2）供应商的详细情况（包括名称、地址、电话号码等）及紧急电话号码；
3）产品的成分信息，包括物质名称、化学文摘社登记号码（CAS号码）；
4）产品的物理和化学特性，如形态、颜色、闪电、沸点等；
5）出口到哪个国家，需要何种标准的MSDS。
总之尽可能的提供产品的详细信息和检测数据，信息越全面MSDS的准确度越高。
